Gestionnaire de fichiers - Editer - /usr/share/doc/slang-2.2.4/changes.txt
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-*- mode: text; mode: fold -*- Changes since 2.2.3 1. src/slpack.c: Typo affecting 64 bit integers ('q' & 'Q') (Paul Boekholt). 2. src/Makefile.in: Make libslang.so a symlink to libslang.so.2 instead of libslang.so.2.2.4 (Miroslav Lichvar) 3. modules/Makefile.in: Cygwin needs ELFDIR defined (Marco Atzeri). 4. src/slutty.c: Added additional baud rate values (Sergey Vlasov) 5. autoconf/configure.ac: Check for socket and socketpair in -lsocket if it is not in libc. 6. *.tm, src/slstrops.c, src/slbstr.c: Changed occurances to occurrences (Marcel Telka). 7. src/slparse.c: Increment the _boseos_info value for qualifier expressions. 8. src/sltoken.c,slparse.c: The semantics of the _boseos_info variable changed such that bos/eos callbacks are not generated for preprocessor #ifeval statements unless bit 0x100 is set. 9. slsh/scripts/slstkchk: a new script used for running the stack-check debugger. 10. documentation updates/tweaks (Manfred Hanke). 11. slsh/lib/rline/histsrch.sl: When building history search completions, use most recent history first. 12. src/slarray.c: Detect integer overflows for multi-dimensional arrays. 13. Updated year from 2010 to 2011 14. src/slcommon.c: Added _slcalloc, _slrecalloc memory allocation functions that check for unsigned integer wrapping. A number of vulnerable calls to SLmalloc were modified to use these functions. (Fixes an issue reported by Pablo Cassatella). 15. src/slarray.c: Detect attempts to create a 0 dimensional array. 16. modules/csv.sl: Float and double NaNs were reversed. When normalizing columns names, _ characters were not being properly treated. 17. doc/tm/rtl/time.tm: Added documentation for timegm (Manfred Hanke). 18. doc/tm/crtl/slsmg.tm: Corrected prototype for SLsmg_read_raw (Manfred Hanke). 19. Tweaked doc macros and rebuilt docs. 20. src/slarray.c: Added a check for too small of a range array increment. {{{ Previous Versions Changes since 2.2.2 1. src/sltermin.c: Added support for native terminfo binary layouts. Some systems have binary terminfo files that are incompatible with the standard ncurses layout. Use the --terminfo=layout configure option to specify a non-standard layout (hpux11, osf1r5, uwin, aix4, default). This incompatibity was pointed out by River Tarnell. 2. src/slparse.c: complicated lvalue expressions were not being properly parsed. 3. src/slstrops.c: Added strskipbytes function. 4. doc/tm/rtl/*.tm: A number of typos were corrected. (Agathoklis D. Hatzimanikas) 5. src/slang.c,slparse.c: Qualifiers were not being passed to functions called via derefencing an array of function references, e.g., (@f[n])(args;q). 6. src/slparse.c: Flag attempts to call literals as functions. 7. slsh/lib/process.sl: Added a "dir" qualifier to the new_process function. This allows the subprocess to be started in a specified directory. 8. src/slrline.c: Added rline_get_last_key_function, which returns the last slang readline key function. 9. */Makefile.in: Commmened out "DESTDIR=" lines (Marcel Telka). 10. slsh/lib/rline.sl: Added rline_edit_history (allows the history to be edited in an external editor) and rline_up/down_hist functions. 11. src/slparse.c: An incorrect check (< instead of <=) was causing -0 to generate an error. 12. .../tm/*: Corrected some documentation typos and spelling errors (Agathoklis D. Hatzimanikas). 13. doc/tm/rtl/misc.tm: Documented the __tmp function and corrected a few more documentation typos (Agathoklis D. Hatzimanikas). 14. src/slerrno.c: ELOOP was defined twice (Agathoklis D. Hatzimanikas). 15. doc/tm/slang.tm: Fixed a few doc errors noticed by Manfred Hanke. 16. src/slsh/scripts/mv: removed redundant call to rename, and added force, noclobber, and verbose options (Agathoklis D. Hatzimanikas). 17. src/slsh/scripts/*: changed "static" to "private". 18. src/sldisply.c: Underlined space characters were not appearing with the underline. 19. src/sldisply.c: Do not rely upon terminals that can background-color-erase (BCE) to erase using the monochrome attributes (e.g., underline). 20. src/slarith.c: Tweaked the %S format to better round decimals with repeated 9s or 0s. 21. autoconf/mkinsdir.sh: Updated to a newer version of mkinstalldirs. 22. src/slagetput.c: Change 2.2.2-10 fixed a problem with aget. The same change needed to be made to aput to avoid an access violation. 23. modules/pcre-module.c: Added support for binary strings (Paul Boekholt). 24. src/slposdir.c: Added utime function. 25. slsh/scripts/mv: Added a missing call to stat_file (Agathoklis Hatzimanikas). 26. src/sldisply.c: Moved the keypad init/deinit code to separate functions for more fine-grained control. 27. slsh/rline/editor.sl: Added rline_call_editor and rline_edit_line functions 28. src/slbstr.c: Added is_substrbytes function. 29. doc/tm/rtl/strops.tm: The strncmp example used strcmp function (Brian Murray). 30. src/sltermin.c: Changed the search order for terminfo files to: $TERMINFO, $HOME/.terminfo, /usr/local/{etc,share,lib}/terminfo, /etc/terminfo, ... 31. src/slparse.c: Change #6 triggered an invalid parse error for statements involving foreach-using such as: foreach x (y) using ("bar") (@foo)(); 32. src/slstrops.c: Added an alternative interface to strreplace that facilitates the most common case where one wants to replace all substrings. The function now supports new = strreplace (a, b, c); in addition to the older usage: (new,m) = strreplace (a, b, c, n); 33. src/sltoken.c,...: Added support for binary integer literals of the form 0b010101. Integers may be formatted as unsigned binary using the %B format specifier, e.g., sprintf ("%B", 5) ==> "101" sprintf ("%#B", 5) ==> "0b101" sprintf ("%#8B", 5) ==> " 0b101" sprintf ("%#.8B", 5) ==> "0b00000101" sprintf ("%#12.8B", 5) ==> " 0b00000101" 34. src/slarith.c: ullong_to_binary was not getting defined on systems where sizeof(long)==sizeof(long long). (Mark Olesen). 35. src/slsh.c: The stat_mode_to_string function was using 'f' unstead of 'p' for FIFOs. (Agathoklis Hatzimanikas). 36. src/slarray.c: Switched to using mergesort instead of qsort and added support for sorting non-array types. For details, see the updated documentation for array_sort. 37. src/slarray.c: Reduced the memory requirments for the mergesort function, which produced a 5% speed improvement. 38. src/slarray.c: Added support for qsort to array_sort. See the updated documentation for details. 39. src/slparse.c: Added a syntax enhancement to structs and qualifiers to allow the fields of structure-valued expressions to be used to define the structure. For example: space = struct {x, y, z}; spacetime = struct {@space, t}; Here spacetime is a structure containing 4 fields: (x,y,z,t). In this context, @ is not a dereference operator. Rather it is used to tell the parser that the following expression is a structure valued. 40. src/slcommon.c: SLmalloc inherited malloc's undefined behavior when 0 bytes were requested. The change will cause SLmalloc to allocate at least 1 byte if the OS version of malloc returns NULL for 0 byte sizes. 41. src/slclass.c: The default dereference method for all scalar and vector classes was changed from undefined to duplicate. That is, @7 will produce 7 instead of triggering a method-undefined exception. 42. src/slwclut.c: Added \x\c\p\,\g character classes to strtrans (See strtrans doc). 43. src/*.c: Made numerous int->SLindex changes to match function prototypes. Note that SLindex_Type is currently typedef'd to be an int, but if that ever changes, these changes will be necessary. I also added SLang_push_array_index to the public API. Also updated copyright year since a number of files changed. 44. src/slarrfun.c: change 43 would not compile on 64 bit systems. 45. src/slnspace.c: the apropos function was not returning float, short, long, and long long constants. 46. src/slarith.c: If LLONG_MAX is not defined, and sizeof(long long) is 64 bits, then use the standard value. 47. src/slang.c: long long constants were not working. 48. slsh/lib/process.sl: modes[i] was being set after i was bumped. This caused modes[0] to be NULL. 49. slsh/lib/slshrl.sl: If the first word is callable, and is followed by a ',', then add parenthesis, i.e., "print,7" ==> "print(7);". Note: this is a commandline convenience feature and has nothing to do with the slang syntax. 50. slsh/lib/rline/complete.sl: Attempt to complete structure field names. 51. src/slrline.c,slsmg.c,sldisply.c: Added support for multiline readline. 52. configure,src/*.hin: Added autoconf support for size_t. 53. src/slang.h,...: Added 'typedef unsigned in SLstrlen_Type' to create migration path for size_t in place of unsigned int. 54. src/slstrops.c: New intrinsics: islower, isupper, isxdigit, isalnum, isalpha, iscntrl, isprint, isgraph, ispunct, isblank, isspace, strskipchar, strbskipchar The latter two functions play a role in the context of the variable length UTF-8 encoding encoding analogous to that of ch=*s++ and ch=*s-- in a fixed encoding. 55. slsh/lib/rline/editfuns.sl: Used functios in change #54 to implement bskip_word and skip_word readline functions. 56. src/slstrops.c: Added isascii, and updated docs. 57. src/sldisply.c: _pSLtt_cmdline_mode_reset will also clear to the end of the screen. 58. mingw32 compilation problems: typo in src/slconfig.h; src/slarrfun.c: missing '#ifdef HAVE_LONG_LONG'. 59. src/slsmg.c: Change #51 introduced a bug that manifests itself when expanding a tab at the right edge of the display. 60. src/slarrfunc.c: If contracting an empty array over all dimensions to produce a scalar, clear the transfer buffer. 61. src/slarrfun.c: If a scalar is passed to array_reverse, then do nothing. 62. src/slarith.c: LONG_MIN/MAX values were placed in an integer contant table instead of a long integer table. SLadd_lconstant_table added to the interface. 63. src/slsmg.c: Change 51 introduced a bug in SLsmg_write_chars when SLsmg_Newline_Behavior != SLSMG_NEWLINE_IGNORED. 64. autoconf/config.sub+config.guess updated. 65. src/slstrops.c: If a delimiter is not passed to strjoin, assume the empty string. 66. modules/test/test_rand.sl: Some integer constants changed to unsigned values. 67. src/slstruct.c: tweak code to remove a false uninitialized variable warning. 68. src/slarray.c: fix NULL pointer deref from invalid binary operation Array_Type[N]+[1:N]. 69. src/slang.c: '>' instead of '<' should have been used in in the try/catch code when decrementing the frame pointer. 70. src/slparse.c: Method qualifiers were getting lost when called from the constructor, e.g., new_object(arg1;qual1).method(arg;qual2) 71. src/sltoken.c: preprocessor statements #if, #ifeval, and #ifexists will use the (non-anonymous) namespace of the file containing the statements. 72. src/slang.c: _pSLlocate_name return NULL instead of an exception if the name contains a non-existent namespace. 73. Removed excess whitespace from all files (*.c, *.h, *.tm, *.sl, ...). 74. src/slang.c: define MAX_USER_BLOCKS to be 5, and use it instead of `5'. 75. src/slsignal.c: Use (char*)NULL instead of NULL in call to execl to avoid a compiler warning on OpenBSD. 76. src/slproc.c: define _XOPEN_SOURCE_EXTENDED to be 1 instead of just defining it. This pulls in some prototypes on OpenBSD. 77. src/slmath.c: The hypot intrinsic was modified to work with N arrays instead of just 2. (Manfred Hanke) 78. src/slarith.inc: Use doubles for intermediate calculations when double is the expected result. This avoids some integer overflows (Matthias Kühnel, Michael Wille, Manfred Hanke). 79. src/slparse.c,slang.c: Added FOREACH_EARGS byte-code that will implicitly call the __eargs function. This avoids a problem with the standard FOREACH bytecode if a hook gets called after __eargs but before the FOREACH byte-code executes. 80. src/slstrops.c: The pos argument to the string_match and string_matches function was made optional (defaults to 1). 81. src/slstring.c: Use _pSLuint32_Type instead of unsigned long for hashes since the hash algorithm was designed for 32 bits. 82. src/slstd.c: Save the pointer passed to putenv to a global array so that leak checkers can find it. The reason for this is that some libc implementations copy the pointer but others do not. 83. src/slang.c: An off-by-one error was causing a stackunderflow error when handling a exception list in a try-catch statement. 84. slsh/lib/arrayfuns.sl: Add support for empty arrays to the shift function (Manfred Hanke). 85. */examples/*.sl: Various updates and corrections (Manfred Hanke). 86. src/sllist.c: A extra call to SLang_free_mmt was causing a list to be freed when set via an index array. 87. src/slstrops.c: Vectorized strlow/strup intrinsics. 88. src/slmath.c: Add support for more than 2 arguments to the _min/_max functions (Manfred Hanke). 89. src/sllist.c: Added list_join, list_concat intrinsics (Mike Noble). 90. slsh/lib/setfuns.sl: adds unique, intersection, complement, union 91. modules/csv.sl: Added a module to support the reading and writing of comma separated values (csv) formatted files. 92. Some documentation corrections (Manfred Hanke). 93. src/slmath.c: In the hypot function, use the convenience function do_binary_function_on_nargs instead of an explicit loop. (Manfred Hanke). 94. modules/tm/slsmg.tm: Manfred Hanke has started documenting the slsmg module. He also provided a new example (slsmgex2.sl). 95. src/slnspace.c,slang.c: Free up some memory associated with namespaces upon exit. 96. src/slposio.c: added ttyname intrinsic 97. autoconf/slang.pc: Use @libdir@ instead of assuming $prefix/lib. 98. modules/csv.sl: The read_cols method allows the type qualifier to be a string of type specifiers, e.g., types="liff". This is equivalent to types=['l', 'i', 'f', 'f']. 99. src/sltime.c: Added timegm, which is the inverse of gmtime. I also made changes to the time functions so that time_t is not assumed to be a long. This means that _time may produce a longlong integer on some platforms. 100. modules/cmaps/coolwarm.map: A color map by Kenneth Moreland. 101. modules/png-module.c: Use png_set_expand_gray_1_2_4_to_8 instead of png_set_gray_1_2_4_to_8 if available (patch forwarded from Marco Atzeri). 102. src/slcommon.c: Code using __libc_enable_secure was removed (patch forwarded from Marco Atzeri) 103. src/sldisply.c: Added some termcap compatibility functions that were ifdefed out in v2.2.2 but were made available by some linux distributions for code to use: SLtt_tgetent, SLtt_tgoto, SLtt_tputs (patch forwarded by Marco Atzeri). 104. autoconf/aclocal.m4,configure.ac: Various updates by Marco Atzeri including a cygwin specific change. 105. autoconf/aclocal.m4: Missing hyphen for ELFLIB_MAJOR on cygin (Marco Atzeri). 106. slsh/lib/doc/tm/setfuns.tm: Add newlines to the note1 macro (Manfred Hanke). 107. src/slang.c: change #5 caused a problem evaluating the bytecode produced by preparsed files (.slc) produced by slang v2.2.2. 108. modules/tm/csvfuns.tm: Documentation updates 109. src/sldisply.c: slsh would exit if the underlying terminal was unknown because _pSLtt_init_cmdline_mode was returning a fatal error. 110. configure, *Makefile.in,etc: Made changes so that ARCH environment variable influences where the .o files are placed. The INSTALL.unx file documented this feature but the slsh and modules Makefiles did not implement this. 111. */mkfiles/makefile.all: Added WFLAGS to mingw sections to allow the warning flags to be specified independently of the CFLAGS. 112. src/slang.c,_slang.h: Changed `#if HAVE_LONG_LONG' to `#ifdef HAVE_LONG_LONG' in a few places. 113. src/slstrops.c: A number of string functions have been vectorized to work on arrays of strings. These include: is_substr str_delete_chars strbytelen strcharlen strcmp strcompress strlen strlow strnbytecmp strncharcmp strncmp strtrans strtrim strtrim_beg strtrim_end strup 114. modules/Makefile.in: Change #110 introduced a bug that caused the modules to always be need rebuilding. 115. src/sltoken.c: Change #if HAVE_LONG_LONG to #ifdef HAVE_LONG_LONG. 116. src/slmath.c: Tweaked the Kahan sum for the hypot function. 117. slsh/readline.c: Added __rline_init/reset_tty functions and used them in the rline editor routines to reset the terminal before calling an external editor. This avoids problems when the editor is subsequently suspended. 118. modules/csv.sl: Typo causing a bug involving the mapping of string valued column-specifiers to column numbers by csv.readcol. (Paul Boekholt) 119. doc/tm/rtl/strops.tm: Typo in sprintf documentation (Andreas Irrgang). 120. src/sltime.c,slposio.c: Avoid certain posix *_r functions if _POSIX_C_SOURCE is too old. Changes since 2.2.1 1. src/slsmg.c: Call SLutf8_enable if UTF8 mode has not been setup. 2. src/slutty.c: Allow the hook that gets called when the read function gets interrupted to change the read file descriptor. Before, if this happened, the SLang_getkey function would return SLANG_GETKEY_ERROR. 3. lib/slsh/print.sl: Turn off buffering of the pager pipe. 4. modules/tm/*.tm: A couple of typos corrected (John Houck) 5. src/slmath.c: The round function was not correctly rounding values between 0.5 and 1.0. 6. src/slstdio.c,slclass.c: If a call to fwrite produces errno=EPIPE, then do not bother trying the write again. 7. modules/fork-module.c: Use WIFCONTINUED only if it is defined. 8. slsh/Makefile.in: Change the order of the libraries such that the newly built ones will be found first. (Markus Hennecke) 9. src/slagetput.inc: Avoid possible access violation when using a range array as an index. 10. doc/tm/rtl/lists.tm: Documented the optional argument to the list_to_array function (Manfred Hanke). Changes since 2.2.0 1. modules/socket-module.c: glibc-2.8 removed the h_addr macro. 2. src/slclass.c: Call clearerr before performing the stdio_fread/fwrite functions. 3. src/slstdio.c: typeof in the fputs intrinsic fixed (n instead of dn was compared to 0). 4. src/slscanf.c: sscanf will treat NaN and Inf in a case-insensitive manner. Also, the NaN([a-zA-Z0-9]*) form is also supported. 5. src/slang.h: SLclass_set_aelem_init_function was missing from the API. 6. src/slmath.c: The expm1 and log1p functions were returning NaN when given Inf arguments. 7. src/slmath,c: log1p(-1) produced nan instead of -inf. 8. configure: Added pkg-config support (based upon a debian patch sent to me by Luca Bigliardi). 9. doc/tm/rtl/math.tm: Updated the help for set_float_format and added documentation for the get_float_format function. 10. autoconf/slangpc.in: Added URL and Libs.private entries to the slang.pc pkg-config file. 11. src/slang.h: prototype for SLang_create_array1 missing from slang.h. 12. src/slcurses.c: Added debian patch that adds support for additional graphics characters (DIAMOND, DEGREE, etc...). 13. doc/tm/slang.tm: Added a small section about arrays of arrays. 14. src/slang.c: __builtin_expect is used for the stack functions if compiled with gcc. 15. src/*.c: A few public variables were not explicitly initialized to 0. Apparantly not doing so causes them not be be exported from the windows DLL. Changes since 2.1.4 1. modules/termios-module.c: Added the VMIN constant (Laurent Perez). 2. src/slbstr.c: Added foreach method to BString_Type objects. 3. module/zlib-module.c: New module that wraps libz (compression/decompression library). 4. doc/tm/rtl/: Some documentation updates 5. configure: Added messages about what extra modules will and will not be built. 6. modules/mkfiles/makefile.all: Added zlib module to the makefile. 7. autoconf/configure.ac: Fixed the spelling oniguruma (Peter J. Ross) 8. src/slang.c,slparse.c,sltoken.c: Added 'break n' and 'continue n' statements. 9. src/slang.c: break-n and continue-n were not being properly handled when used outside a function. 10. src/slparse.c, sltoken.c: Added the C-like ternary-expression "condition ? foo : bar". 11. src/sltoken.c: Added support for mult-line strings: "This is a \ multiline \ string". `This is another multiline string.` Note that the backquoted does not require a backslash at the end of lines. 12. src/sltoken.c: When reading subsequent lines of a multiline string, increment the readline parse_level. 13. src/sltoken.c: When performing backslash expansion, if a solitary backslash occurs at the end of a line, or is preceeded by a newline at the end of a line, then ignore it. 14. src/slexcept.c: The use of an ERROR_BLOCK was causing the pointer holding the name of the function with the error to be freed twice. 15. slsh/lib/rline/*keys.sl: Bind "\n" to the readline "enter" function. 16. src/sltoken.c: Improved and simplified the way operators are mapped to tokens. 17. slsh/lib/sldbcore.sl: sldb was printing all the elements of a container object when using the "p" command. 18. src/slarrfun.c: Added a "sumsq" function, which sums over the squares of the elements of an array. 19. src/slsignal.c: Added SLsystem_intr, which unlike SLsystem does not ignore SIGINT by the calling process. This function is available to the interpreter via system_intr. 20. doc/tm/rtl/debug.tm: Documentation for the call stack frames added (Jörg Sommer). 21. src/slarrfun.c: array_reverse was producing an index-error when passed an empty array. 22. src/slcurses.c: SLcurses_initscr calls SLutf8_enable (Michal Ratajsky). 23. src/slang.c, slparse.c: "then" clauses were not being executed for top-level looping statements (statements occuring outside function definitions). 24. src/slang.c: Change #23 was causing byte-compiled (.slc) files from previous versions of jed to be misinterpreted. 25. modules/zlib-module.c: The error message associated with ZLIB_DATA_ERROR was incorrect (Paul Boekholt). 26. src/slarray.c: Fixed a bug involving due to an overzealous __tmp optimization involving binary operations between arrays of arrays. Fortunately the bug manifests itself in a useless context. 27. src/slstring.c: Improved performance of SLang_concat_slstrings function. (Paul Boekholt) 29. src/slang.c: When adding two strings together, make a direct call to SLang_concat_slstrings avoiding some function call overhead. 30. src/slmath.c: Added expm1 and log1p functions. 31. src/slmath.c: If hypot is passed a single array X, then it will compute sqrt(sumsq(X)), which is useful for computing the norm of a vector represented by X. 32. src/slarith.c: Changed the default floating point format to %S, which means that the floating point number will be formatted in a slang specific way to preserve the precision of the number such that x == atof (string(x)). 33. src/slarray.c: Passing an object to size_t to SLmalloc was resulting in a SEGV on 64 bit systems. 34. src/slbstring.c,slang.c: Small modifications to generalize the __tmp optimization to binary-strings. 35. src/slstrops.c: Changed strcpy to memcpy where permissible (Paul Boekholt). 36. src/slarray.c: __tmp optimization of binary optimization was not obeying the READONLY flag. 37. src/slang.c: __tmp optimization for struct.field OP= value. 38. src/slarith.c: For floating point types, the %S format specified will always print the decimal point or exponent. 39. src/slmisc.c, sltoken.c: Added parser checks for overflows of literal integer constants. 40. src/slarith.c: Change #38 resulted in decimal points in inf and nan. 41. src/slarithlc: By default, a floating point number x, where |x|>=1e6 is printed in exponential form. 42. src/slparse.c: Added looping context checks for break and continue statements. 43. src/slang.c: Small tweak to inner_interp to improve branch-prediction (Paul Boekholt) 44. src/slang.c: Optimized additional byte-code combinations. 45. src/sldisply.c: On TERMCAP based systems, the "ac" capability was being returned as the address of a local variable (Szalai Andras). 46. src/slrline.c: The SLrline_redraw function was not properly setting the last_nonblank_column variable. 47. src/slstd.c: SLang_Doc_Dir was implicitly defined to be an int when SLANG_DOC_DIR is defined. (Jon Parise) 48. src/mkfiles/makefile.all, src/slconfig.h: Visual Studio tweaks (Jon Parise). 49. modules/module.c: Added sockerpair to the module. 50. src/slang.c: The string representation of a Ref_Type will show the namespace prefix, e.g, "&ns->foo". Also the __get_reference function was modified to ignore a leading '&'. 51. src/slposio.c: Added dup2_fd intrinsic (a wrapper around dup2). 52. modules/fork-module.c: New module (fork, waitpid, exec*, ...) 53. src/slagetput.inc: a[i]=b was sometimes resulting in a buffer overflow when i had elements outside the range of a. 54. modules/select-module.c: A small memory leak was corrected. 55. doc/*.tm: Some documentation updates. 56. src/slposio.c: Allow a file descriptor to be fdopen'd multiple times. 57. src/slstdio.c, src/slclass.c: Restart the fread/fwrite calls calls when interrupted by a signal. 58. src/slcommon.c: SLang_handle_interrupt will preserve errno. 59. src/mkfiles/makefile.all: Updated for newer versions of Visual C (Jon Parise). 60. src/slang.c: set_array_lvalue was not preserving SLang_Num_Function_Args. 61. src/slang.c,sig.c: Continual bombarding the interpreter with signals revealed a subtle race condition in the interpreter's implementation of signals. 62. src/sllist.c: Added list_to_array intrinsic function: array = list_to_array (list [,type]) 63. .../makefile.all,slsh/slsh.c: Additional Visual C updates. Also, io.h is needed to compile slsh Visual C. (Jon Parise) 64. src/slproc.c: added killpg intrinsic 65. modules/sysconf.c: Wrappers around the sysconf, pathconf, and confstr posix function.s 66. modules/fork-module.c: Added the pipe intrinsic. 67. src/slexcept.c: Added traceback info to the exception object. 68. src/slposio.c: Added a _close intrinsic, which takes an integer file descriptor instead of the corresponding slang object. A _fileno intrinsic was also added that returns the integer descriptor. A bug in the dup2 intrinsic added in change 51 was fixed. 69. src/slstruct.c: Added aget/aput methods for user-defined types. 70. src/slang.c: handle_signals was made reentrant. 71. modules/fcntl-module.c: Accept an int as a file descriptor. 72. src/slposio.c: @FD_Type(int) may be used to convert an int into the corresponding FD_Type object. 73. modules/sysconf-module.c: Added #ifdefs for HAVE_SYSCONF, etc. 74. modules/zlib-module.c: Added #ifdefs for the ZLIB constants 75. src/slstdio.c: Rewrote fputs intrinsic in terms of fwrite to better deal with EINTR. Also, fopen, fclose and fflush are restarted upon EINTR. 76. src/slstring.c: Avoid a problem where the first n bytes of a string hashes to the same location as the full string. 77. src/slparse.c: Reworked the integer-overflow code. 78. src/*.h: Updated Unicode tables to v5.1. 79. src/slwclut.c: Added \7 to indicate a 7 bit character class. 80. slsh/lib/readascii.sl: The readascii function defaults to using double precision instead of single. 81. src/sllist.c: Change the chunk size and how it is allocated to be more cache friendly. 82. src/slstrops.c: Added string_matches, which combines the operations of string_match and string_match_nth. 83. modules/fork-module.c: Restart waitpid if EINTR received. 84. slsh/lib/process.sl: A new process module for creation of child processes, pipelines, etc. 85. slsh/lib/process.sl: If no qualifiers were passed, list_to_array was failing on an empty list. 86. src/sllist.c: improved indexing performance. 87. src/slproc.c: Added getsid 88. modules/onig-module.c: Added BString_Type support to onig_search (Paul Boekholt). 89. src/slmath.c: The calling syntax of the polynom function was simplified and extended to support arrays. As such, this function is not backwards compatible. 90. src/slang.c: Added optimizations for the power operation a^b. 91. src/slstruct.c; Added an struct-specific acopy function instead of using the default. 92. src/slarray.c: streamlined the case of getting a single array element of non-scalar types. 93. src/slang.c: Additional optimizations involving binary expressions. 94. src/slparse.c: Avoid an explicit chs bytecode for negative floating point literals. 95. src/slang.c: optimization tweak for expressions involving scalar assignments to an array element. 96. src/slang.c: change #93 introduced a small leak. 97. src/slang.c: optimization tweak involving pushing the value of a structure field. 98. src/slstdio.c: If fread/fwrite returns a short, non-zero item count, clear the error and try again. 99. src/slstdio.c: If fflush appears to succeed, check ferror and if errno==EINTR, try it again. 100. src/slproc.c: Added get/setpriority functions. 101. src/slstdio.c: Added setvbuf 102. src/slproc.c: Added the "static" to the get/setpriority wrappers. 103. doc/tm/: Updated docs and reprocessed with an upgraded version of linuxdoc. Unfortunately, a table of contents for the text files is nolonger generated by linuxdoc. 104. src/slang.c: Added inline support for the bit-wise binary operators. 105. src/slang.c: Optimized pushing arbitrary single 1d array elements. 106. src/slang.c: Optimization tweak for assigmnents to structure fields. 107. src/slang.c: Reordered some of the code in the inner_interp switch statement and optimized some of the code that deals with assignments to global variables. The latter change improves the performance of the profiler a bit. 108. src/slang.c: If an intrinsic takes no arguments and returns nothing, then call it directly from inner_interp. 109. src/sltype.c: Added __datatype intrinsic, which is the opposite of the __class_id function. 110. src/slang.c: set_struct_obj_lvalue was not always incrementing a reference count on non-struct objects with struct semantics. 111. src/slarith.c: On a system where sizeof(long)==sizeof(long long), omit the long-long specific functions. 112. modules/pcre.sl: Added pcre_matches function that combines the other pcre functions into a simple to use form. 113. src/sltoken.c,slparse.c: Overflow check was failing on 64 bit systems. 114. src/sltoken.c: If the default read method encounters a too long line, then issue an error instead of passing it back up for the parser to handle. 115. src/sltoken.c: preparsed files were being mishandled by #114. 116. src/sllist.c: Added array indexing support to list objects. 117. src/slarrfun.inc: Tweaked the implmentation of Kahan sums. 118. src/slmath.c: An optional argument may be provided to the polynom function to indicate that the kth term should be divided by k!. 119. src/slmath.c: Added frexp and ldexp intrinsic functions. 120. src/slmath.c: #119 introduced a typo that was preventing compilation on systems that lack frexpf. 121. src/slarray.c: When indexing a scalar as an array, allow the use of multiple indices, e.g., x=2; y=x[0]; z=x[0,0]; w=x[0,0,0]; 122. slsh/lib/readascii.sl: When reading the first column as a string, comments were not getting ignored. 123. slsh/lib/rline/emacskeys.sl: The IBMPC_SYSTEM preprocessor macro was used but not defined causing readline to fail on windows. 124. Updated copyrights on files for upcoming release. 125. doc/tm/slang.tm: Add documentation for the looping-then clause, and various other documentation tweaks. 126. src/slconfig.h: non-Unix systems: Remove defines for mode_t etc. Define HAVE_POPEN for MINGW32. 127. slsh/lib/print.sl: Do not attempt to call popen unless it actually exists. Changes since 2.1.3 1. src/slang.c: The identifier syntax was not being checked for symbols added to the global namespace. 2. slsh/slsh.c: If ENV_SLSH_PATH is undefined, set it to SLSH_PATH 3. */mkfiles/*: Modified the various makefile.all files to facilitate mingw32 builds. Read INSTALL.pc for quick-start. 4. mkfiles/install.sl: Added a function to install the slang docs 5. src/slvideo.c: #define UNICODE so that wide-character functions are used instead of byte functions. Also codepage set to 65001 in unicode mode. 6. src/slvideo.c: Added SLtt_is_utf8_mode. 7. src/sltermin.c: Added support for new ncurses hex-encoded terminfo directories. 8. slsh/lib/tm/cmdopt.tm: Missing commas in the documentation for cmdopt_add. (Doug Burke). 9. src/slarrmisc.inc: Changed inner-product code to use block arrays to be more cache friendly. Since the block size is cpu-dependent, __get/set_innerprod_block_size functions have been added. The default value is controlled by a variable in src/sllimits.h. 10. modules/termios-module.c: Added additional termios constants (Laurent Perez). 11. src/slarray.c: Better optimization when indexing arrays with ranges. 12. src/slsignal.c: If SLsystem fails, set the interpreter's errno value accordingly. 13. modules/rand-module.c: A uniform random number generator module, which also provides generators for some well-known distributions. 14. src/*.c: Changed field name for SLang_Object_Type.data_type to o_data_type. 15. src/slang.c: Optimization tweaks to improved performance for small arrays and indexing via scalar indices. 16. doc/tm/rtl/stack.tm: Typos in the example for __pop_list corrected (Doug Burke). 17. src/slang.c: Improved optimizations for scalar arithmetic operations. 18. src/slarray.c: slices such as A[*,[0:-1],*] of multi-dimensional arrays were producing single dimension ones. 19. src/sltoken.c: Changed the semantics of the SLang_set_verbose_loading function. Previously this function accepted a zero or non-zero value to disable or enable loading messages for .sl files. Now this integer value is a bitmapped one: If bit 0 is set, loading messages will be generated for .sl files. If bit 1 is set, messages will be generated for dynamically loaded modules. 20. slsh/slsh.c: Calling slsh with -v will generate loading messages for both modules and slang files. I also created a new slsh-specific intrinsic called set_verbose_loading and bumped the slsh version number. 21. modules/cmaps: Added "ds9b" and "ds9sls" colormaps --- these correspond to analogous colormaps in saotng ds9. 22. utf8/tools/mktables: Characters with general category "Mc" or in the bi-directional category are nolonger flagged as combining characters. 23. utf8/tools/: Updated unicode database from 3.2 to 5.0 and recreated the internal character set tables. 24. src/slsmg.c: If an ambiguous-width unicode line drawing character is double width, then use a single-width alternative (Sugiyama). 25. src/slsignal.c: Call SLang_handle_interrupt when system calls are interrupted. 26. src/slarray.c: Speed improvements when transferring elements from one array to another via range indices, e.g., a = b[[1:9]]; 27. src/slarrfun.c: transpose of multi-dim non-scalar arrays was using unitialized memory. 28. src/slarray.c: Improved speed of binary arithmetic of range arrays. 29. src/slstd.c: atoi, atof, atol, atoll, and integer now accept an array arguments. 30. demo/pager.c: args swapped in call to memset (Dave Jones davej at redhat) 31. src/slstring.c: Move last used string in the hash table to the top if it is more than a few deep. 32. slsh/doc/tm/slsh.1: Added a small section to the slsh man page about customizing the readline environment. 33. slsh/etc/slsh.rc: changed dir_exists from static to private 34. src/slposio.c: The low level read/write functions should not be restarted when errno is EAGAIN. 35. src/sltoken.c: When run in verbose mode, SLns_load_file will display the name of the namespace the file is being loaded into when the namespace is not the Global one. 36. slsh/lib/require.sl: If the "feature" is a filename, then automatically "provide" that feature. 37. slsh/lib/tm/require.tm: Fixed the typos for the require function. 38. src/slstrops.c: Until `|' is supported in REs, glob_to_regexp cannot be made to produce a single RE that does not match leading dots. Hence, the glob expression "*X" will match ".X". 39. slsh/lib/glob.sl: Changed to compensate for modification to glob_to_regexp. That is, glob("*X") will not match the file ".X", which preserves the bahavior of the glob function. 40. src/slcommon.c: On win32 systems, if the codepage is 65001, then use UTF-8 mode (Thomas Wiegner). 41. src/slarray.c: Trivial change to avoid a warning in gcc about the possible use of an uninitialized variable. 42. slsh/slsh.c: Added -q, --quiet command line option to inhibit the printing of the startup messages. 43. slsh/lib/print.sl: Added pager[=val] and nopager qualifiers to the print function. Also if printing a single structure, each field will appear on a separate line. 44. src/slstrops.c, src/slbstr.c: Added count_char/byte_occurances function to count the number of occurances of a specific character or byte in a string. 45. src/slparse.c: &if was causing a SEGV. 46. src/slstd.c: Added get_float_format intrinsic. 47. doc/tm/Makefile: Added rules to make cref.pdf 48. slsh/lib/print.sl: Updated the usage message for the print function. 49. src/slang.h: Added __attribute_(format(printf)) to SLsnprintf prototype. 50. src/*.c: Function prototypes were changed from, e.g., char *SLang_create_slstring (char *); to char *SLang_create_slstring (SLFUTURE_CONST char *); where SLFUTURE_CONST is defined to have no value. As a result, these changes has no effect at present but will in a future version (slang-3) where SLFUTURE_CONST will be defined to be `const'. The use of `const' now would constitute a major API change, which is not permitted until a new major version is released. 51. src/slmisc.c: SLFUTURE_CONST added to SLextract_list_element prototype. 52. src/slang.h: Added SLFUTURE_CONST to arg_type field of SLcmd_Cmd_Type object. 53. src/slarith.c: The return value of fmod was being truncated to single precision. 54. doc/tm/cslang.tm: COLORTERM was used instead of COLORFGBG (Nathan Stratton Treadway). 55. configure,*/Makefile.in: Haiku systems do not require -lm. -lm was replaced */Makefile.in by @M_LIB@ which is not set from the configure script. (Scott McCreary) 56. src/slutty.c,src/slidsply.c: More Haiku-specific patches from Scott McCreary. 57. mkfiles/makefile.m32: Made changes to work with recent versions of mingw32 and added a silly hack to work-around CMD.EXE interpretation of '=' as whitespace on the command line. 58. doc/tm/rtl/rline.tm: New file containing documentation for intrinsic functions dealing with the slang readline interface. 59. slsh/lib/print.sl: If a string is passed as a file descriptor to the print function, then regard the string as a filename. 60. src/Makefile.in: Added _slang.h and sllimits.h as a global dependency. 61. slsh/lib/tm/print.tm: Documented the slsh print function. 62. slsh/lib/print.sl: Rewrote and simplified the code that prints to the various output "devices" by using a device-object. 63. autoconf/Makefile.in: Added src/Makefile.in as a dependency. Changes since 2.1.2 1. autoconf/Makefile.in: If any */Makefile.in is more recent than the corresponding Makefile, request that the configure script be rerun. 2. src/slcmplex.c: If the complex number z is 0, then return 1 for z^0. 3. src/slerr.c: SLang_set_error: If the error code is SL_UserBreak_Error, then do not add a string representation to the queue in case this function was called from a signal handler. This avoids a call to malloc, which is generally a bad idea on systems where malloc is not reentrant. 4. slsh/lib/sldbcore.sl: The "c" alias was not working. (John Houck) 5. src/slsmg.c: Avoid a possible segv if SLsmg_Scroll_Hash_Border is greater than the display size. (Miroslav Lichvar). 6. src/slang.c: Line number information was not always getting propagated in slang code involving function dereferences, e.g., (@funcptr)(args). The bug-fix checks to see that funcptr is callable. 7. src/slparse.c: Generate bos/eos byte-code for empty code blocks, e.g., while (1){}. 8. lib/sldbcore.sl: When exiting the debugger via the "exit" command, the old SIGINT handler was not getting installed. 9. src/slang.c: Make sure check_signals gets called when returning from inner_interp. 10. src/slsig.c: If a slang script establishes a signal handler for SIGINT, then set SLKeyBoard_Quit to 1 if SIGINT is received. 11. src/slstruct.c: New intrinsic:__add_typecast. This may be used to define a typecast function for a user-defined type. 12. autoconf/aclocal.m4: Added support for ncurses5-config to query the terminfo path (Wenchieh Yen). 13. src/slang.h: If __APPLE__ is defined, then also define __unix__. 14. src/slmath.c: Avoid a NULL pointer dereference when feqs(a,b) is called with mixed scalar and array arguments. 15. src/slsmg,c: Avoid writing a double-wide character to the last column of the display. 16. src/sltermin.c: Search the autoconf-derived terminfo dirs before the hard-coded paths (Wenchieh Yen). 17. doc/tm/rtl/math.tm: feqs documentation updated to reflect a default relative difference of 0.01. 18. doc/tm/rtl/eval.tm: In one example, get_path_delimiter is incorrectly used (Frank Primini). 19. src/slstrops.c: Memory corruption was occuring when using a number greater than 10^256 in a "%f" format statement. 20. src/slstrops.c: Small tweak in the way #19 was implemented. 21. modules/socket-module.c: If INADDR_NONE is defined, use it to test the return value of inet_addr. 22. src/slang.c: SLang_start_arg_list made a wrapper around start_arg_list. Changes since 2.1.1 1. slsh/lib/readascii.sl: Typo in the usage message corrected. 2. autoconf/aclocal.m4: Fixed elf link problem on freebsd (Renato Botelho) 3. doc/tm/slang.tm: Some documentation updates 4. slsh/lib/cmdopt.sl: The value passed to a callback function was not be converted to the specified type, e.g., for cmdopt_add (opt, "foo", &callback; type="int"); callback was not being passed an integer. 5. src/slang.c,slassoc.c: Optimization tweaks for inc/decrementing associative arrays (e.g., foo["bar"]++). 6. src/slerr.c: When SLang_set_error is called, then add the string representation of the error message to the message queue. 7. doc/tm/strops.tm: Corrected the documentation for the string_match function. (Guenter Milde) 8. src/sllimits.h: Increased the size of the hash table that stores SLstrings for better efficiency. 9. src/slstrops.c:_pSLang_push_nstring: Inlined the call to _pSLang_push_slstring. 10. slsh/lib/structfuns.sl: Ignore any NULL arguments. 11. slsh/src/readline.c: Turned on output processing in the call to SLang_init_tty. 12. src/slang.h: Several functions were marked as "extern" and not as SL_EXTERN. This makes a difference for CYGWIN and WIN32. 13. src/Makefile.in, autoconf/*: Better support for the creation of cygwin DLLs. 14. src/slang.h: Under windows+cygwin, if SLANG_DLL is not defined, the it will get defined as 1. This means that by default, the application will get compiled against the slang DLL. To build against a static version of the library. compile your code using -DSLANG_DLL=0. 15. Backed out the previous change (#14) to avoid breaking third-party code that compiles against the library. 16. Makefile: `make` will only build the shared version of the library. Use `make static` to create the static version. 17. src/slcmplex.c; Division by zero errors are no longer trapped. This has been the default behavior for reals; this change applies to complex numbers. 18. */*/*.tm: Documentation updates 19. src/slrline.c: When completing a quoted string, the final quote character will automatically get added (instead of a space as before). 20. src/slrline.c: SLang_peek_at_stack+SLang_pop_int recoded as wrappers around inlined versions. 21. src/Makefile.in: Avoid creating a symlink if the target is the same as the link (affects cygwin). 22. src/slsh.c: If exit is called without arguments, interpret that as exit(0). 23. src/slsh.c: Prior to entering interactive mode, turn tracebacks off. 24. src/Makfile.in: LDFLAGS was not getting used. 25. doc/tm/: Some typos corrected (Jörg Sommer) 26. slsh/Makefile.in: slsh/doc/html/*.html gets installed in $prefix/share/doc/slsh/. Changes since 2.1.0 1. slsh/lib/print.sl: Only the first element of arrays such as Float_Type[1,1,1,10] were getting printed. 2. src/slscanf.c: strings containing only whitespace were not parsed properly by _pSLang_sscanf when %s was used in the format. 3. slsh/lib/readascii.sl: A flexible ascii data file reader. 4. src/slang.ver: Updated the linker version script (mlichvar at redhat, com). 5. src/slang.ver: The wildcard for the SLANG2 symbols was picking up the SLANG2.1.0 symbols. (mlichvar at redhat, com). 6. slsh/lib/readascii.sl: Added type and cols qualifiers. Updated docs. 7. src/slang.c: If auto_declare is non-zero, and a reference to an undefined variable is made, that variable will be automatically created and given static scope. 8. slsh/lib/autoload.sl: readascii added. 9. src/slrline.c: The redraw function was ignoring the application installed update hook, disrupting the display when a redraw was requested. 10. autoconf/configure.ac: -liconv was not getting added when creating the iconv module on systems with a standalone iconv library. 11. slsh/lib/readascii.sl: Added "as_list" qualifier to return values in lists rather than arrays. 12. src/slscanf.c: Added inf/nan support to sscanf. 13. src/slboseos.c: Before calling the hooks, push the error context so that they will work in the presence of errors. 14. lib/slsh/tm/profile.tm: Documented the profile_* functions. 15. doc/tm/slang.tm: Added documentation about qualifiers. 16. src/slarray.c,modules/*.c: Use SLindex_Type instead of int for indexing arrays. Currently SLindex_Type is typedefd as an int. 17. src/slang.c: Added SLang_pop_array_index to the API. Applications should use this function instead of SLang_pop_int for getting array indices. This new symbol is versioned at 2.1.1. 18. src/slstruct.c: SLang_pop_cstruct will now force SLang_Array_Type objects to linear ones. 19. ./NEWS: Updated 20. slsh/lib/test_readascii.sl: Changed the "list" qualifier to "as_list". Changes since 2.0.7 1. src/slrline.c: SLrline_bol/eol functions were missing from the interface. 2. src/slarray.c: An optional reference argument may be passed to the where function to get the complement indices. That is: i = where (foo, &j); is equivalent to i = where (foo); j = where (not foo); 3. src/slexcept.c: SLerr_throw added to allow applications to mimic the semantics of "throw". 4. src/slparse.c,slang.c: New short-circuit operators || and &&. Use of the "orelse" and "andelse" constructs has been deprecated. 5. src/slsmg.c: SLsmg_write_wrapped_string and SLsmg_write_nstring were broken for double-width characters. Updated demo/smgtest.c to test these functions in the presence of such characters. 6. demo/smgtest.sl: Embedded some control characters in the double-wide character string for testing the handling of them. 7. doc/tm/cslang.tm: Updated some of the documentation for the SLsmg interface. 8. src/slstd.c,slang.c: Added new function intrinisc called "_$" that expands embedded "dollar-escaped" variables. 9. src/sllist.c: Added __push_list/__pop_list functions that push list elements to the stack or create a list from objects on the stack. These functions may also be used as an alternative to __push_args/__pop_args. 10. slsh/lib/structfuns.sl: Modified struct_combine to use __pop_list instead of __push_list. 11. src/test/scircuit.sl used for regression testing of the short-circuit operators was missing. 12. src/slang.c: Small memory leak involving method calls plugged. 13. src/slparse.c,slang.c,slstruct.c: Added support for embedded assignments in structure definitions, e.g., X = struct { a = 4, b = 3, c = sin(PI/4)}; 14. src/slang.c,slparse.c,slstruct.c: Added support for "function-qualifiers", e.g,. define plot_point (x, y) { set_color (qualifier ("color", "black")); . . } plot_point (2, 1; color="red"); See docs for more info. 15. modules/png.sl: Added gmin and gmax qualifiers to the png_gray_to_rgb function. 16. src/kwhash.c: New keywords: "ifnot" and "then". The "ifnot" keyword plays the same role as "!if", except the use of "!if" is deprecated. Then "then" keyword is used in looping constructs as described in #17. 17. src/slparse.c,src/slang.c: All looping constructs may be followed either an "else" block, or a "then" block, or a combination of both: loop (N) { if (foo) break; % execute the else block if present } then { % This block executes if the loop ran to completion } else { % This block executes if the loop was broken prematurely } *** NOTE: This change broke backward-compatibility. For this reason, support for the else clause was dropped". See #48 below. 18. slsh/scripts/slprof: Rewrote much of this script to make it more friendly and useful. 19. src/sldisply.c: When checking for the equality of space characters, it is only necessary to see see if their background colors are equal -- the foreground color does not matter. Miroslav Lichvar mlichvar at redhat, com. 20. modules/png.sl: A variable (bad_level) was undefined. 21. src/slparse.c: The meaning of constructs such as (a<b<c) has been changed to have its mathematical meaning, namely ((a<b)and(b<c)). Before, (a<b<c) was interpreted as (a<b)<c. Also, == and != now have the same precedence level as <,<=,>,>= to permit, e.g., (a==b<c). Note that (a<b<....<c<d) is also defined as ((a<b)and(b<...<c)and(c<d). 22. src/slarray.c: New intrinsic: wherenot(x), which means where(not x). 23. src/slarray.c,slparse.c: [a:b:#n] may be used to specify a floating point array with n elements running from a to b, inclusive. 24. src/slparse,slang.c: Fixed the bug where _NARGS was incorrectly set in functions called via expressions such as (@A[i])(x). 25. src/slang.c,slarray.c,slparse.c,slstruct.c: References to structure fields and array elements are now supported, e.g., &s.foo and &A[20]. 26. slsh/slsh.c: Added '-e string' command-line option. 27. slsh/lib/profile.sl: Rewrote much of it to support both profiling individual lines and functions. 28. slsh/scripts/slprof: Added 'calibrate' and 'lines' command-line options. 29. src/slang.c: Unsigned ints were sometimes pushed as signed ints. 30. src/slrline.c: Added a new public function called SLrline_move that moves the cursor a specified number of columns. 31. slsh/lib/glob.sl: If a glob pattern does not include a path, the returned list of files will nolonger be prefixed with "./", i.e., glob("foo") returns "foo" and not "./foo". 32. slsh/readline.c: If slsh_interactive_hook exists, it will be called prior to going into interactive mode. 33. src/slrline.c: A completion mechanism was added. This works by making a callback to a user or application provied hook that returns a list of possible completions. This functionality is available if SLrline_init has be called to add readline-specific intrinsics to the interpreter. The slang code implementing the completion hook is in slsh/lib/complete.sl. 34. modules/png.sl: Load the colormaps into the same namespace that was used by png.sl (Mike Noble). 35. slsh/slsh.c: readline intrinsics were not getting initialized. 36. slsh/lib/rline/completion.sl: Avoid adding NULL to the completion list when no completions are in the global or current namespace. 37. src/slerr.c: Added SLang_verror_va function. It is like SLang_verror, except it takes a va_list argument instead of a variable argument list. 38. slsh/scripts/slprof: If atexit exists, use it. 39. src/slwclut.c: Typo in is_posix_charclass (> instead of >=) was causing the long form of posix character class names not to be properly recognized. 40. src/slrline.c: SLrline_init was using SLfree instead of SLang_free_slstring, causing a core-dump. 41. slsh/lib/slshrl.sl: Use slsh_get_doc_string defined in slshhelp.sl. 42. autoconf/aclocal.m4: Add support for rpath on OpenBSD. 43. src/slarray.c: Single element arrays specified via, e.g., [a:b:#1] produced the array [b] instead of the "more" correct answer [a]. 44. src/slexcept.c: __get_exception_info will NULL if no exception is active. Previously it reported an unknown exception. 45. src/slang.c: If a finally-block threw an exception and then caught it, the outer exception was getting lost. 46. slsh/lib/glob.sl: glob("*") nolonger matches files that begin with ".". A leading dot in a filename must be matched explicitely. A similar change was made to glob_to_regexp. 47. src/slang.c,src/slexcept.c: An exception may be rethrown by using "throw" without any arguments. This required support for multiple error-queues. 48. src/slparse.c: The "loop-else" feature added in change #17 was dropped because the change was not backwards compatible, changing the meaning of connstructs such as if (some_condition) loop (N) {...} else something_else(); "loop-then" is still supported. (Thanks go to Paul Boekholt for picking up on this). 49. src/sldisply.c: If the terminal supports BCE, then ignore the background color of space characters that occur as trailing whitespace (Miroslav Lichvar). 50. src/slrline.c: Added additional rline intrinsic functions: rline_call rline_set_point rline_set_line 51. src/slrline.c: SLrline_init was using SLang_free_slstring instead of SLfree. Also SLrline_set_point was using < instead of > when comparing point to len. 52. src/slrline.c: Added rline_getkey and rline_input_pending intrinsic functions. 53. src/slstd.c: If the "char" function is passed a negative integer, byte-semantics will be used. 54. src/slrline.c: When browsing previous history items, the item that is currently being edited will not be lost. 55. src/slrline.c: A new function called SLrline_open2 was added to the API. It is like SLrline_open except that it associates a name with the underlying SLrline_Type object and calls an interpreter hook (rline_open_hook) with that name. This mechanism permits the readline history to be saved to a file and then later retrieved. 56. slsh/lib/rline/*.sl: A few .sl files were added: vikeys.sl: A simple vi-like emulation emacs.sl: A emacs-like emulation editfuns.sl: Some utility editing functions history.sl: Functions to save/restore history 57. slsh/scripts/sldb: If the file was specified using a relative path, prefix its name with the cwd to ensure that it loads. 58. src/slmath.c: Add "fuzzy" floating point comparison functions feqs, fneqs, flteqs, fgteqs, which compare numbers using a specified relative and absolute error. 59. slsh/readline.c: Readline objects were made available to the interpreter. 60. slsh/scripts/svnsh, slsh/lib/sldb.sl: Added readline-specific calls to enable the saving/loading of history. 61. src/slrline.c: Added rline_get_edit_width intrinsic. 62. src/slarrfuns.c: prod function added (Mike Noble). 63. src/slstrops.c: %b may be used in sprintf to specify a byte conversion. This is equivalent to %c when UTF-8 mode is not in effect. 64. src/slarrfuns.c: PROD_RESULT_TYPE was not getting defined on 64 bit systems (Brian McQueen) 65. src/Makefile.in,autoconf/Makefile.in: Now `make install` installs the shared library but not the static one. Use `make install-static` to install the static one. 66. autoconf/aclocal.m4: rpath support for netbsd 67. slsh/slsh.c: A preprocessor symbol may be added using -Dname command-line option. 68. src/slstd.c: changed __is_numeric to return 1 if an integer, 2 if a floating point, and 3 if complex. 69. src/slang.c: missing break statement in the handling of the qualifier token. This bug manifested itself only when running with slprof or sldb. 70. slsh/lib/cmdopt.sl: Functions to facilitate the processing of command line options. 71. slsh/scripts/slprof: modified slprof to use the cmdopt interface. 72. slsh/lib/structfuns.sl: Enhanced the struct_filter function to filter on specific array dimensions and to return a new structure when given the "copy" qualifier. 73. src/slimport.c: Allow pathname in an import statement, e.g., import("/path/to/module"); 74. src/slarrfun.c: Added minabs/maxabs functions. 75. lib/cmdopt.sl: Added support for type="str" qualifier. Also, cmdopt documentation corrected. 76. src/slassoc.c: When resizing an associative array that had elements deleted, the num_occupied field was not being properly updated. This was causing the length of the array to be incorrectly computed. 77. src/slproc.c: Added getpgrp,setpgrp,getgid functions. 78. src/slutty.c: In the getkey function, if a SIGINT caused SLKeyBoard_Quit to be a non-zero value, the interrupt_hook was not getting executed. 79. autoconf/Makefile.in: Tell the user to re-run the configure script if it is more recent than the Makefile. 80. src/slstd.c: __is_numeric was not returning 3 for Complex_Type. 81. src/slexcept.c: Do not log traeback messages unless _traceback is non-zero. 82. src/slclass.c: Added SLclass_patch_intrin_fun_table to the library and modified the code in modules/ to make use of this function. 83. src/slang.c: SLang_Traceback is now a bitmapped variable, but defined in a backward compatible manner. See slang.h and the documentation for the _traceback variable for more information. 84. src/slang.c,slexcept.c: Change 83 required a small tweak to the testing of traceback variable. 85. src/slparse.c: MAX_TOKEN_LISTS increased to 256. 86. src/slparse.c: Added a couple of #if..#endif constructs to avoid compiling bos/eos hooks when the debug feature has been disabled. (Tijs Michels tijs, michels at t-online, de) 87. src/slproc.c: The setpgrp function that was added in change #77 has been removed because on some systems it takes arguments, and on others it takes none. It is also equivalent to setpgid(0,0), so there is no net loss. 88. src/slutty.c: Set the FD_CLOEXEC flag on the /dev/tty file descriptor. 89. src/doc/tm/cslang.tm: Changed the array examples to use `SLindex_Type' instead of `int'. I also added a note about this to the NEWS file. 90. modules/iconv-module.c: a new module (Dino Sangoid). 91. src/slsig.c: SLsignal was used instead of SLsignal_intr. The difference is that SLsignal_intr interrupts system calls, which is a better choice for the interpreter. 92. src/slproc.c: added setsid intrinsic 93. src/slarray.c: [a:b:#1] was producing [NaN] instead of [a]. 94. src/sldbcore.c: The debugger was not stopping upon SIGINT. 95. src/sltermin.c: Added _pSLtt_tifreeent to free the SLterminfo_Type object and avoid a memory leak (Miroslav Lichvar mlichvar at redhat, com) 96. slsh/lib/cmdopt.sl: Add bor=FLAG and band=MASK qualifiers to support bitmapped options. 97. modules/onig-module.c: New module that wraps the oniguruma regular expression library. 98. src/slang.c: If a file defining a namespace was loaded, a duplicate namespace error was getting generated when also loading a byte-compiled version of the same file. 99. src/slclass.c: In _pSLclass_copy_class, a possible NULL return value by alloc_class_slot was not being handled. Changes since 2.0.6 1. src/slmath.c: if a double precision array was passed to nint, it was treated as a single precision one leading to a core dump. 2. src/sldisply.c: The Is_Fg_BGR variable was re-introduced and a typo affecting it was corrected. 3. src/slinclud.h: Do not include malloc.h on FreeBSD (Renato Botelho garga at freebsd, org). 4. doc/tm/cslang.tm: Changed a couple of occurances of "unsigned char" to "SLtype". (Doug Burke dburke at head, cfa, harvard, edu) 5. doc/tm/rtl/list.tm: Documentation changed to indicate that the third parameters to list_append/insert are optional. (Doug Burke). 6. src/slwcwidth.c: Added a new function to the API called SLwchar_set_wcwidth_flags. This may be used to force SLwchar_wcwidth to 1 for double width characters. Such a feature is sometimes needed for fixed fonts that treat single and double width characters the same. 7. slsh/lib/slshrl.sl: The readline-massage hook was interpreting lines beginning with a '.' as RPN. 8. slsh/lib/sldb*.sl: The debugger was not stopping upon errors generated by the deprecated function verror. 9. src/slparse.c: "++()" was flagged by the parser as an error, but no error message for it was being generated. 10. src/slang.h: #if HAVE_LONG_LONG changed to #ifdef HAVE_LONG_LONG 11. src/slsmg.c: Return right away if SLsmg_write_chars is told to write 0 characters. Also a bug fixed in the logic of this routine involving the test for overwriting the second half of a double width character. 12. src/slrline.c: Finished the UTF-8 support by the readline functions. 13. slsh/*.c: Added slsh_get/set_prompt_hook functions for setting of the slsh command-line prompt. (Douglas Burke) 14. src/sltoken.c: Added additional string representations for tokens so that some error messages will not appear to be so cryptic. 15. src/sltoken.c: _pSLparse_error: Use the line number of the input stream if the linenumber associated with a token is unknown. 16. src/slparse.c: Inline arrays and lists are allowed to have a trailing comma, e.g., [1,2,] is the same as [1,2]. 17. doc/tm/rtl/type.tm: typo in example for atof corrected (Doug Burke). 18. Improvements for building on DOS/Windows (Mike Noble): * The various mkfiles/makefile.all now include a clean: target * The top-level mkfiles directory now includes 3 new files: A build.sh script, which auto-generates the Makefiles (using mkmake) and commences a build, similar to the build.bat script which was already there (and which I tweaked slightly). Seed makefile.dos and makefile.sh scripts, which get copied to the root of the S-Lang distro when either build.sh or build.bat are run. This makes it easier to build everything at once, or clean, etc, from the top of the distro. * A few new paragraphs in INSTALL.pc * In the various mkfiles/makefile.all, "CFLAGS +=" changed to "CFLAGS =" to avoid nmake 1.5 problems. * Simplified the module build targets in modules/makefile.all, and made it much easier to add new modules in the future. 19. Added module support for cygwin. This involved a few minor changes to the Makefiles and aclocal.m4 (Mike Noble) 20. slsh/slsh.c: Brief copyright message displayed when started up in interactive mode. 21. src/slarray.c: Improved support for mixed-type inline arrays: NULLs supported (["foo", NULL]) where it makes sense, and type-promotion rules are used to determine the resulting type when concatenating mix-type arrays (["foo"], NULL, ["bar\0"]); 22. src/slrline.c: SLrline_close was not freeing the history creating a memory leak. 23. src/keywhash.c: Removed obsolete and unused "do_while" keyword, and regenerated keywhash.c 24. doc/tm/slang.tm: List of keywords updated to reflect the actual keywords used. 25. modules/mkfiles/makefile.all: Updated VC-specific LINK_CMD macro to support the changes outlines in 18 above (Dino Sangoid). 26. src/slang.c,src/slboseos.c: Added hooks for entering and leaving a function. The beginning-of-statement and end-of-statement hooks were found insufficient to support a debugger support. See the documentation for _bofeof_info for more information. 27. slsh/lib/sldbcore.sl: Modified to use the bof/eof hooks introduced in #26. 28. Various documentation tweaks. 29. src/slboseos.c: Changed the beginning-of-function handler to include the filename. 30. src/slsh/lib/require.sl: Removed the "feature not provided" message. 31. src/slrline.c: Tabs were not being expanded properly when the window was horizontally scrolled. Also, the last column of the display is not used in case the terminal has automatic margins. 32. lib/sldbcore.sl: The debugger's "finish" command was not quite working as it should have. 33. lib/sldbcore.sl: Added an sldb_initialize function that can be overridden by the debugger. 34. src/slposio.c: Made changes to allow arbitrary objects to be attached to file descriptors. 35. src/sl*tty.c: Set SLKeyBoard_Quit to 0 in the init_tty routines. 36. modules/socket-module.c: A new module that defines various socket functions. This required additions to the configure script and related files. 37. src/slstrops.c, slsh/readline.c: Removed statements that were never reached. 38. src/sltypes.c: foreach(X) where X is String_Type produces a sequence of UChar_Type objects. This is consistent with typeof(X[i]). Also added "using" forms to specify char or byte-semantics: foreach (X) using ("bytes"|"chars"). The default is byte semantics. Updated the corresponding docs. 39. src/slang.h: Added SLang_push/pop_wchar macros. 40. src/sldisply.c: This file was failing to compile with Kanji support enabled. Kanji is unsupported in slang-2. 41. src/slcurses.*: Alt-character set handling was not working. Once again, I strongly encourage you to modify your programs to use the native SLsmg routines instead of the partial curses emulation hacks. 42. slsh/lib/sldbsock.sl: New file to implement socket-based debugger. 43. slsh/scripts/sldb: Added --pid <pid> option for debugging a separate process via the socket-based debugger interface. 44. src/slang.c: If a try-finally block contained a return statement, the function would sometimes continue after the finally block. 45. modules/termios-module.c: Added tcget/seti/ospeed functions for setting baudrates of termios structures. Also added CRTSCTS constant to the module. 46. src/slclass.c: If an application calls SLang_pop_mmt with a non-MMT type specified, a SL_Application_Error exception will be generated. 47. src/slang.c: A misplaced return statement was introduced by #44 above. 48. src/slparse.c: Allow the "finally" keyword to be followed by a colon, e.g., try foo; finally: bar; 49. src/sltoken.c,slang,c: "Dollar" and long-longs were not being properly handled in byte-compiled files. 50. src/test/Makefile: Changes were made to test byte-compiled versions of the test scripts. 51. modules/socket-module.c: added #include <time.h> to get it to compile on mac osx. 52. src/slmath.c: The data field was not properly used by the nint function. 53. modules/select-module.c: Call SLang_handle_interrupt when the select system calls gets interrupted. 54. src/slposio.c: Add == and != operators to FD_Type objects so that fileno(stdin)==fileno(stdin) works as expected. 55. src/slarray.c: wherefirst and wherelast were not working with empty arrays. 56. src/slmisc.c: SLang_guess_type was failing on numbers containing a leading '+' sign. 57. src/slimport.c: The name of the SLANG_MODULE_PATH environment variable may be changed in src/Makefile. 58. src/slrline.c: Added a delete-to-beginning-of-line (delbol) function and bound it to ^U. 59. slsh/Makefile.in: $(CFLAGS) added to the final link line. (Nelson H. F. Beebe) 60. src/slmath.c: Avoid the use of function pointers to standard math functions to support a wider range of compilers. 61. autoconf/aclocal.m4: IRIX compilers do not require "-K pic" 62. autoconf/configure.ac: Probe for socklen_t. 63. */Makefile.in: Added support for the $LIBS env variable 64. src/slerr.c: Added fflush(stdout) to SLang_vmessage. 65. slsh/lib/sldbcore.sl: The eof hook was improperly handling the debugger step. 66. src/slarray.c: Optimization added for index-array operations on double, float, and int arrays. 67. src/slarith.c: Optimization added for boolean operations between [U]Char_Types. 68. lib/structfuns.sl: Typo in the documentation corrected (Doug Burke) 69. lib/*.sl, lib/tm/*.tm, lib/help/*.hlp: Documentation for the functions in *.sl has been moved to *.tm and integrated into the help system. 70. src/slwclut.c: a missing "default" label in a switch statement was causing invalid character class specifiers to pass. 71. src/slang.c: Optimization added for struct method calls. In addition, linenumber information was propagated for such function calls to permit better interaction with the debugger. 72. slsh/lib/profile.sl: profile_on was not being called with an argument. Changes since 2.0.5 1. src/slmath.c: nint was returning the wrong value for numbers 0.5<=x<1. 2. src/slarrfuns.c: sum(Double_Type[0,0],1) was generating an access error. 3. src/*.c: Removed some unused variables. 4. src/slcommon.c: '=' instead of '==' was being used in the utf8_enable function. 5. doc/tm/*.tm: corrected some documentation typos (Nelson Beebe, beebe at math, utah, edu). 7. src/sltime.c: times function was returning a structure containing incorrect values (cstawarz at head, cfa, harvard, edu). 8. src/sldisply.c: Writing a multi-byte character to the lower-right corner of terminals with automatic margins was not working (Vladimir Nadvornik nadvornik at suse, cz). 9. src/slwclut.c: Allow \\^ in character set specifications to represent a literal '^'. See the documentation for strtrans for more information. 10. src/slcommon.c: Some systems that have nl_langinfo do not have CODESET. The configure script now checks for both. 11. autoconf/Makefile.in: Added ".PHONY" and "check" targets. 12. src/slstrops.c: "%c" in an sprintf style format descriptor made to work with wide-character arguments. It is nolonger necessary to use "%lc". 13. src/slmisc.c: Semantics of "\x{...}" changed to be more useful when the interpreter is running in non-UTF8 mode. Previously, "\x{...}" always expanded to a UTF-8 encoded string, regardless of the UTF-8 mode. Now, in non-UTF8 mode, \x{...} will expand to a UTF-8 encoded string when "..." consists of 3 or more characters, and for less than 2 characters, it specifies a byte. The behavior in UTF-8 mode has not changed: \x{...} always returns a UTF-8 encoded string. The upshot is that "\x{FF}" will produce the byte 0xFF when not in UTF-8 mode, and the 2 byte UTF-8 encoding when run in UTF-8 mode. "\x{FFF}" will expand to the apropriate UTF-8 encoding regardless of the mode. Note that the behavior of the non-brace form such as \xAB has not changed--- the result is still a single byte 0xAB. 14. src/slmisc.c: \u{...} may be used in string literals to specify a unicode character, regardless of the UTF-8 mode (on or off). Previously, \x{...} had this behavior. (See #13). 15. src/test: Tests are run in both UTF-8 and non-UTF-8 modes. 16. src/slvideo.c: djgpp version of write_attributes was broken (Gisle Vanem giva at bgnett, no) 17. slsh/readline.c: Call SLang_handle_interrupt if a read was interrupted by a signal. This will ensure that signal handlers will execute at the prompt. 18. src/sldisply.c: Added a check for buffer-overflow by tgetstr on TERMCAP based systems. 19. autoconf/: Updated config.sub and config.guess 20. slsh/readline.c: Added slsh_readline_noecho function. Also, strip trailing newline from string returned by slsh_readline* when in --no-readline mode. Changes since 2.0.4 1. slsh/slsh.c: Error messages were not being printed if an error occured during an atexit hook. 2. src/slstrops.c: Use _pSLstring_bytelen instead of strlen to get the number of bytes. 3. src/slstring.c: Several tweaks were made for faster string handling. 4. src/slparse.c: A negative integer literal raised to a power was not being properly parsed. 5. doc/tm/cslang.tm: Documentation updated to reflect the changed SLang_pop_double API, as well as other C API documentation tweaks (Doug Burke). 6. doc/tm/rtl/type.tm: Documentation for "integer" changed to indicate that integer throws a SyntaxError exception if the string does not have a valid syntax. (Joshua Kempner jkempner at bowdoin, edu) 7. src/slmath.c: Added nint (round to the nearest integer) intrinsic. 8. src/slarray.c: NULL arguments to array_map were not getting converted to arrays of NULL. 9. src/slang.h: Added SLclass_set_length_function for setting the length method of application-defined classes. 10. src/slang.ver: A versioning script is used to restrict the visibility of the _pSL* symbols. (Alastair McKinstry mckinstry at computer, org) 11. slsh/slsh.c: Ignore SIGPIPE. 12. src/slutf8.c: If SLutf8_decode is passed an inproperly encoded UTF-8 sequence, then set the target of the SLwchar_Type pointer to the ascii value of the byte, in addition to returning NULL. 13. src/slposdir.c: Added "access" intrinsic. 14. src/slsmg.c: Fixed a buffer-overflow in the SLsmg_write_chars function. 15. src/slsig.c: A missing return statement was causing sigsuspend to fail when called with 0 arguments. 16. src/slarray.c: Added wherefirst and wherelast intrinsics. 17. src/slang.c: Inline attribute removed from some functions that were failing to be inlined by the compiler. 19. src/slstdio.c: SLang_get_fileptr added to permit an application to get the FILE* object associated with a SLANG_FILE_PTR_TYPE. 20. src/slang.c: It was failing to compile when SLANG_HAS_DEBUGGER_SUPPORT was set to 0. 21. src/sltime.c: strftime intrinsic added. Changes since 2.0.3 1. slsh/scripts/svnsh: Empty lines were not being handled. 2. src/slutf.c: Incorrect bracketing in the IS_ILLEGAL_UNICODE macro. (johannes figgen at flextronicssoftware, com) 3. src/sllist.c: A prev link was not always getting set by the list_insert function. 4. doc/tm/rtl/eval.tm: Tweaked the documentation for the eval function (Mike Noble mnoble at space, mit, edu) 5. modules/png.sl: Make sure the scale factor is a float and not an int. 6. src/sltime.c: The tic/toc functions were changed to use gettimeofday or its equivalent. This change results in greater resolution for these interval timers, but not necessarily greater accuracy. Also, previously the tic/toc functions measured the time used by the current process but now they measure elapsed time. The old behavior is still available via _tic/_toc. 7. slsh/lib/profile.sl: The above change made it possible to create a more accurate profiling tool. The functions in this file are used by the slsh/scripts/slprof profiling tool. 8. src/slarith.c: Missing break statement caused signed long long values to be printed as unsigned long longs. 9. tm/doc/cslang.tm: Two small typos corrected (Alastair McKinstry mckinstry at computer, org) 10. autoconf/aclocal.m4: Support for GNU Hurd and GNU KFreeBSD / KNetBSD systems (Alastair McKinstry) 11. src/slstrops.sl: Added support for long long to the sprintf intrinsic function (e.g., sprintf ("%lld", 1234LL)) 12. modules/png-module.c: 8 bit gray scale images were being written out as 8 bit images with an alpha channel. Bug fixed and version bumped to 0.1.1. Changes since 2.0.2 1. src/slang.c: Optimization of multiple assignment statements involving binary operators was generating bad byte-code causing a run-time error. In order to see this effect, code such as w = 3*t+s; x = 2*z+1; y = z*z; would have to be written as a as multiple assignment statement: (w,x,y) = (3*t+s, 2*z+1, z*z); 2. src/sltypes.c: Added SLang_push_function to complement SLang_pop_function. 3. src/slkeymap.c: SLkm_define_slkey implemented. It was already declared in slang.h but never implemented until now. Changes since 2.0.1 1. src/slang.h: Forgot to bump SLANG_VERSION to 20001. Changes since 2.0.0 1. modules/png.sl: png_gray_to_rgb was missing an assignment after normalization. 2. slsh/lib/print.sl: Ignore SIGPIPE while in the pager. 3. src/slang.c: SLang_peek_at_stack1_n was broken. 4. src/slsmg.c: If the cursor is left outside the visible display area during SLsmg_refresh, then "clip" its position to the visible area. 5. src/slarray.c: Typo (= vs ==) was corrected in the array_eqs_method function. (Dino Sangoid) 6. src/slmath.c: Use IS_NAN macro instead of isnan (Dino Sangoid) 7. src/mkfiles/makefile.all: Added dll support for the mingw32 build (Marko Mahnic; marko mahnic at email, si) 8. src/slang.c: Removed a while loop that did nothing. (Dino Sangoid) 9. src/mkfiles/makefile.all, src/slconfig.h, src/slposdir.c: Support added for 16 bit systems using watcom C (Dino Sangoid) 10.doc/tm/*.tm: Some spelling errors corrected (Mike Noble) 11. src/slang.c, src/slnspace.c: There was a conflict between private and static namespaces that arose when _implicitly_ loading a file into a specified namespace. Resolving this issue involved the complete separation of the private and static namespaces. 12. The _get_frame_info function now provides the name of the active namespace. 13. src/sldisply.c: Line drawing characters were not activated when xterm was started in locale mode. Escape sequences were tweaked. (Alexander E. Patrakov, patrakov at ums, usu, ru) 14. slsh/lib/print.sl: If an element of an array of structs is NULL then print the element as NULL. 15. modules/varray.c: typo was preventing mmapping of a file from working properly. 16. slsh/lib/*.sl: changed "static" to "private" to protect the functions when loaded into a namespace. 17. autoconf/configure.ac: Add tests for atoll and strtoll. Some versions of MacOS X do not have atoll. 18. modules/png.sl: Added png_get_colormap_names and changed examples/colormap.sl to use it. 19. src/slarrfun.c: Ignore _NaNs in min/max functions. 20. slsh/lib/sldbcore.sl: Added several aliases to the debugger: b(reak), c(ont), d(elete), h(elp), l(ist), n(ext), p(rint), pp(rint), q(uit), s(tep) Changes since 2.0.0 pre-release 8 1. src/slang.c: Under some conditions, no line number information was being reported for stack underflow errors. 2. lib/sldbcore.sl: Missing return value was causing a stack-underflow error. (Paul Boekholt) 3. src/slmisc.c,src/sltoken.c: In UTF-8 mode, an escaped sequence of the form "\xAB" is interpreted as a byte. Previously, it was interpreted as a wide character. To encode a wide character using an escape sequence, use braces ("\x{AB}"). 4. src/slstd.c: The putenv function now throws an OSError exception upon failure. Previously it threw a RunTimeError. 5. src/slerr.c: Added NamespaceError exception and changed some of the namespace specific function to throw this exception instead of a RunTimeError exception. 6. src/slang.h: SL_Domain_Error was missing from the file. 7. src/slerrno.c: If errno_string is called without an errno argument, the current value of _pSLerrno_errno will be used. 9. src/sltime.c: The "time" functions were changed from using an unsigned long to a long to match time_t. 10.src/slvideo.c: Corrected a typo in the non-Unix/non-VMS specific SLtt_utf8_enable function. Changes since 2.0.0 pre-release 7 1. slsh/lib/structfuns.sl was missing from the distribution. 2. src/sldisply.c: SLtt_Blink_Mode set to have a default of 0 instead of 1. 3. slsh/slsh.c: Add -t option, which causes slsh_main (if defined) to not be executed. 4. src/sltoken.c:SLang_load_object: Do not reset the line_num field. This gives the line numbers in slsh interactive mode some meaning. 5. src/slsh/lib/slshrl.sl: Usage message for "exit" 6. src/slvideo.c: SLtt_utf8_enable function added 7. src/slexcept.c: If tracebacks are turned off, make sure that the line number field in exception objects is meaningful. 8. src/slang.c: SLang_peek_at_stack1_n was not working. (Mike Noble mnoble at space, mit, edu). 9. src/slang.c: Small optimization tweak when dealing with a single array index. 10. src/slposio.c: Jorge Gonzalez, jgonzalez at atsautomation, com found and fixed a leak in the "read" function. 11. modules/png-module.c: New module to read/write png files. It includes about 20 colormaps. See examples/colormap.sl. 12. src/slclass.c: SLang_get_int_type returns the SLtype for the integer with the specified number of bits. 13. src/slarray.c: array_shape intrinsic function added as an alternative to array_info for getting the dimensionality of an array. 14. src/slospath.c: new intrinsic: path_basename_sans_extname 15. src/, slsh/: A number of win32 tweaks to support dynamic linking under windows. (Dino Sangoid; sangoid at lloydadriatico, it). 16. src/slstruct.c: Check for duplicate fields in a struct. (Doug Burke; burke at cfa, harvard, edu). 17. src/slarrfun.c: New matlab-like functions "any" and "all". (Doug Burke; burke at cfa, harvard, edu). 18. src/slang.c: Calling SLang_restart will also clear the slang error state. There is no need to call SLang_set_error(0) after calling SLang_restart. 19. src/sltoken.c: Allow the evaluation of '#if (expr)' when created a pre-parsed file (.slc). 20. src/slang.c: If a function defined in the currently loading file is to also be autoloaded into another namespace, and that namespace is not current one, then make sure an anonymous namespace is being used. 21. src/slang.c, slboseos.c: Experimental support for a debugger. New functions: _set_frame_variable _get_frame_variable _get_frame_depth _get_frame_info _use_frame_namespace 22. slsh/lib/sdb*.sl: An experimental source code debugger based upon a Dino Sangoid's jed debugger. 23. src/slang.c: The "_pSL" prefix was dropped from a few file-local variables. Also calls to _pSLclass_push_* were changed to calls to file-local specific versions of the functions. 24. src/slsh/mkfiles/: A couple of win32 icons for slsh were provided by Marko Mahnic (marko. mahnic at email, si) 25. src/slarray.c: If typeof(t)==DataType_Type, then put back the old behavior of array creation via t[N]. 26. doc/tm/slang.tm: The slang manual has been updated for version 2, with numerous typos corrected. 27. slsh/scripts/sldb: New script that invokes the debugger. 28. src/slstruct.c: Added _is_struct_type. This works like is_struct_type excepted if the object is an array, it returns information about the array elements. 29. slsh/lib/print.sl: The "print" defined by this file may be used to print arrays, structures, lists, etc. It is also used by sldb's pprint command. Changes since 2.0.0 pre-release 6 1. The _traceback variable was being ignored. As a result, error messages were more verbose than requested. 2. I fixed the negative indexing issues and made such indexing much more consistent. Before it was possible to index the first through last elements of an array using the index [0:-1]. However, there were too many inconsistencies associated with this feature. Negative indices are still supported but in a much more consistent fashion. See UPGRADE.txt for more details. Changes since 2.0.0 pre-release 5 0. src/slang.h+others: I created a new typedef in slang.h representing array indices (SLindex_Type). This is used in the SLang_Array_Type structure. Previously the affected fields were ints. For backward compatibility, SLindex_Type is defined as an int. This change was made with an eye to the future when 64 bit platforms become more common with physical memory such that one wants to index arrays with more than MAX_INT elements per dimensions (the current limit). 1. src/slarith.c: missing comma in a code block specific to 64 bit systems prevented compilation. 2. src/: OS/2 specific patches. 3. src/mkfiles/makefile.all: Added some ranlib commands for the mingw32, cygwin, and EMX compilers. 4. */mkfiles/makefile.all: Add TOOL_PREFIX variable to support cross-compilation. 5. slsh/slsh.c: win32 specific changes to get path to slsh.rc via the GetModuleFileName function (DINO SANGOI (SANGOID at lloydadriatico, it)). 6. slsh/mkfiles/makefile.all: Corrected the values of the SLANGINC and SLANGLIB variables. 7. src/slstd.c: atoll intrinsic was not getting defined. (Doug Burke (dburke at head-cfa, cfa, harvard, edu)). 8. src/test/longlong.sl: Add test for atoll (Doug Burke) 9. src/slerr.c: SLang_set_error: Allow an error to be cleared but not changed to another value in the presence of an error. 10. src/slarray.c: Allow a 1-d integer array to always address a multidimensional array. Not just "sometimes". 11. slsh/lib/arrayfuns.sl: local variable a was multiply defined in reverse function. 12. src/slpack.c: Add support for long long and 64 bit types. Also 'z' specifier added as an alternative to 's'. 13. src/slstdio.c: Previously, fread(&v,Char_Type,n,fp) would assign a BString_Type object to v if n>1 or Char_Type if n==1. Now, for consistency it returns Char_Type[n] for n > 1. To get the value as a binary string, use fread_bytes. This change is not backwards compatible and may break code that relies upon the old behavior. See UPGRADE.txt for additional information. 14. src/slrline.c: A silly typo prevented multiple instances of readline objects. 15. slsh/: New intrinsic: slsh_readline. This allows a script to get input from the user using the readline interface. 16. slsh/scripts/svnsh: A simple shell for interacting with an SVN repository. 17. src/slang.h: The SLANG_MODULE macro was incorrectly defined when compiled with C++. 18. src/slkeymap.c: A small memory leak was found by Gilles Mazoyer pgid at free, fr. 19. src/slarith.c,...: Some problems were found on 64bit big-endian machines. Correcting this involved adding new functions to the interface long and short intrinsic constants. 20. src/slang.c: Inside a finally block, loops were not working if the exception handler issued a break or return statement. 21. src/slrline.c: On a 64bit big-endian system a SEGV would result when inserting text. 22. configure: CFLAGS added to the ELF_CFLAGS variable. LDFLAGS added to the ELF_LINK variable. 23. src/slposdir.c: hardlink intrinsic added. 24. src/slexcept.c: "function" field added to the exception object. 25. src/slang.c: The way line number information is stored has been changed. Now it is nolonger necessary to get line number information by setting the _debug_info variable. In the process I tried to make the error messages somewhat more useful. 26. src/slang.h: SLvsnprintf and SLsnprintf functions made public Previously these were _pSLvsnprinf and _pSLsnprintf. (Dino Sangoid). 27. src/slang.c, _slang.h: Bytecodes were made enums instead of preprocessor symbols. 28. src/slang.h: External symbols have been prefixed with SL_EXTERN to facilitate the construction of a slang DLL on windows. When compiling against the slang DLL, be sure to define SLANG_DLL. (Dino Sangoid). 29. src/sllist.c: Added foreach method to lists. 30. src/slsmg.c: Experimental feature: If rendering a character string that contains an character sequence of the form 'ESC [ x m', or 'ESC [ x ]', where x represents a decimal integer, then the current color will be switched to the value of x. If x is omitted (ESC[m) then the color will be set to the color active at the time of the function call. SLsmg_set_color (1); SLsmg_write_string ("This is a \033[123mnew\033[m feature"); is equivalent to: SLsmg_set_color (1); SLsmg_write_string ("This is a "); SLsmg_set_color (123); SLsmg_write_string ("new"); SLsmg_set_color (1); SLsmg_write_string (" feature"); By default, this feature is turned off but may be turned on via SLsmg_embedded_escape_mode (1); Although this special color-changing-byte-sequence looks like an ANSI escape sequence, the semantics are very different. 31. doc/tm/rtl/type.tm: The "string" function was documented as returning an integer. (Doug Burke) Changes since 2.0.0 pre-release 4 0. src/*: For POSIX compliance, all _SL* symbols were changed to _pSL*. Change suggested by Alastair McKinstry. If you experience a linker error such as "undefined symbol: _SLChg_UCase_Lut" after upgrading, then you will have to recompile your application. 1. src/slstring.c: Bug fix. For some strings, a substring would produce the same hash as the full string. As a result, the substring was not being properly generated. 2. src/slerr.c: For applications not using the interpreter, _pSLerr_init was not getting called. As a result, the error-codes were not getting initialized. 3. src/slsmg.c: Bug fix affecting SLsmg_Newline_Behavior (Thomas Dickey). 4. src/doc/tm/rtl/strops.tm: typo caught by Doug Burke. 5. src/slstd.c: added atoi, atol, atoll as simple wrappers around corrsponding standard library functions--- same caveats apply. 6. src/slstd.c: New intrinsics: add_doc_file, get_doc_files, set_doc_files. These functions facilitate the addition of documentation via a standard mechanism across all apps using the interpreter. 7. slsh: Interactive support with readline-editing added to slsh. By default, the slang library readline functions are used. If you want GNU readline, then run configure with the appropriate option. (This feature is due to Mike Noble, mnoble at space, mit, edu). 8. slsh: A man page for slsh (Rafael Laboissiere, rafael at debian, org). 9. src/slwclut.c: No provision was allowed for backslashes in ranges that also permitted character classes. 10. slsh/mkfiles/makefile.all: New file for non-unix systems. (DINO SANGOI (SANGOID at lloydadriatico, it)). Changes since 2.0.0 pre-release 3 1. New intrinsics: array_swap, array_reverse 2. src/slrline.c:SLrline_open: If the display width argument is 0, set it to 80. 3. sldisply.c: Initialize SLtt_Screen_Cols/Rows to (80,24) instead of (0,0). 4. src/slparse.c: Expressions such as &s.foo and &s[0] are flagged as unsupported at parse time. 5. src/slimport.c: A module may now be imported into more than one namespace. See modules/README if you are a module writer. 6. slsh/Makefile.in, modules/Makefile.in: Made changes so that nothing gets compiled during the install step. 7. src/slimport.c: If "import" is called without a namespace argument, the current namespace will be used. If the current namespace is anonymous, the global namespace will be used. 8. slsh/lib/require.sl: The provide/require functions have been changed to take a namespace argument. 9. doc/tm/slang.tm: Added section on operator overloading for user-defined types. 10. doc/tm/tools/fixtxt: a jed-script to repair the text files generated by the linuxdoc sgml2txt program. 11. doc/tm/slang.tm: Corrected some typos spotted by Doug Burke. 12. src/mkfiles/makefile.all: DOS/Windows: The response file was not being properly generated (SANGOI DINO (SANGOID at lloydadriatico, it) 13. src/slang.c: The autoload function may be used to load a file into a namespace. (Based upon an idea from Jörg Sommer (joerg at alea, gnuu, de) 14. src/slstring.c: New hash function (from Bob Jenkins-- see See http://burtleburtle.net/bob/hash/evahash.html) 15. src/slassoc.c: rewritten to use double hashing. Changes since 2.0.0 pre-release 2 1. autoconf/aclocal.m4: "if [...]" replaced by "if test ..." (Lloyd Zusman) 2. src/slsearch.c: BM searches for a string with the same length as the string to be searched was failing. 3. slsh/scripts/jpegsize: New demo script that finds the dimensions of jpeg-encoded images. 4. src/slstd.c: Added _slang_install_prefix intrinsic variable. 5. src/slboseos.c: New file. This file allows to define callback functions that will be called at the beginning (BOS) and end (EOS) of every statement executed by the interpreter. 6. slsh/lib/stkcheck,sl: The code in this file makes use of the new BOS/EOS hooks to display lines in a source file that leave something on the slang stack. 7. examples/profile.sl: This file defines a few functions that take advantage of the BOS/EOS hooks to profile slang code. 8. src/slarrfun.inc: sum and cumsum tweaked to use a "compensated summation" technique to reduce the effect of roundoff and truncation errors. 9. src/slmisc.c: SLatoi("h") was producing 0, and not an exception. 10. src/slmath.c: On VMS, slang is compiled with IEEE support (Jouk Jansen). 11. src/slassoc.c: Rewrote the implementation to use a double hashing scheme. Changes since 2.0.0 pre-release 1 1. slsh/lib/require.sl: Protect the Features variable against multiple loading. 2. src/*.c: VMS-specific patches from Jacob (=Jouk) Jansen. 3. src/slsearch.c: non-UTF-8 case-insensitive searches were not working. 4. src/SLwchar*.c: SLwchar_xxxx functions will use the current locale if UTF-8 has not been enabled for the interpreter. 5. src/sldisply.c: The display of double-wide unicode characters was not working properly under some conditions. 6. src/slsmg.c: If a double wide character is being displayed, then if a character is written to either of the cells occupied by the double wide character, then the opposing cell will be overwritten with a space. 7. src/sltoken.c: Characters specified as 'x' where 0 !=(x&0x80) were not being properly parsed. 8. src/aclocal.m4: --without-foo was not working. 9. src/slstrops.sl: Fixed an access error in the "string_match" function. Changes since 2.0.0 pre-release 0 1. src/slpath.c: slpath_dirname on VMS was failing to include the closing "]" in its return value. 2. src/slprep.c: A comment in a slang "#ifdef" directive would cause an infinite loop. 3. src/slarray.c: An integer array such as [a:b:c] where a>b and c>b was being improperly computed. 4. src/slparse.c: Function calls with missing arguments was not being properly handled, e.g., func(,); 5. src/slang.h, src/slclass.h: SLclass_set_foreach_functions added. 6. src/slcurses.[ch]: changes added to support UTF-8 (Adrian Colley) 7. src/Makefile.in: $(prefix)/doc changed to $(prefix)/share/doc (Adrian Colley) 8. src/sldisply.c: Missing "break" added to tt_sprintf (Andrew V. Samoilov). 9. src/slang.c: SLang_peek_at_stack_n and SLang_peek_at_stack1_n functions added to peek deeper into the stack (Mike Noble) 10. src/slang.c: The actual name of the local variable is used in the traceback messages. 11. src/slsig.c: Support for the signals added to the interpreter. The new intrinsics include: signal, sigsuspend, sigprocmask, alarm. 12. src/slcommon.c, slang.h: When system calls are interrupted, a set of "interrupt" hooks may be called. The return values of the hooks determine whether or not the system call is restarted. 13. src/slang.c: If a string has a $ suffix, then variable name expansion will take place on the string, e.g., "$CC"$. 14. src/sldisply.c: misc patches (optimization and buffer overflow) (Andrew V. Samoilov) 15. src/slprep.c: #<whatever> was not working (Paul Boekholt). 16. src/sldisply.c: Applied a patch from Andriy I Pylypenko dealing with tgetstr on termcap-based systems. 17. src/slcurses.c: combining character support added to curses emulation (Adrian Colley) 18. src/slsmg.c: New function SLsmg_strwidth returns the displayable width of a character string assuming it will be displayed at the current position. 19. src/slstrops.c: string_match and string_match_nth work in terms of byte-offsets, not character offsets. New intrinsics: strbytesub and substrbytes that substitute a byte and return a byte sequence, resp. 20. src/slarray.c: If A is a string, the A[n] returns a UChar_Type. Indexing a string using array notation uses byte-semantics. 21. src/slang.h: Tracing messages were being queued instead of processed right away. 22. src/slcommon.c: SLutf8_enable will use nl_langinfo if available. 23. src/slstdio.c: new intrinsic: fputslines 24. src/slerr.c: Explicit CRs (\r) removed from error and message handling routines. 25. modules/: smg-module.c renamed to slsmg-module.c, with similar name changes to the module symbols. Also, for each xxx-module.c, a new xxx.sl was added to be installed in the slsh install-dir so that slsh's "require" will pick up the specified module. Changes since 1.4.9 0. There have been many changes for the version 2 release. See NEWS and UPGRADE.txt for some of the changes. The ones listed here were to appear in 1.4.10, if released. Version 2 contains these changes and many more. 1. src/slang.c: Test for local variable stack overflow was using > instead of >=. 2. src/slarray.c: Fixed a bug that prevented 7 dim arrays from being indexed. Similar problem to #1 above: > vs >=. 3. src/slassoc.c: The following caused a segv: X = Assoc_Type[Int_Type]; X["foo"] = [1:10]; Now a type-mismatch error will get generated. 4. src/slerr.c,sltermin.c: Off by 1 calculations of buffer-sizes fixed by Andrew V. Samoilov (andrew at email, zp, ua). 5. src/slkeypad.c: More escape sequences courtesy of Denis Zaitsev (zzz at cd-club.ru) 6. src/slerr.c: SLang_get/set_error functions have been added to the API to get and set the value of SLang_Error, resp. The variable SLang_Error will be removed from slang 2. Applications should start using these functions to ease migration to the next version. 7. src/slstruct.c: Added SLang_push/pop/free_struct functions to public API. The objects themselves are still opaque. 8. src/slparse.c: allow the semi-colon to be used as a field separator in a structure declaration. 9. src/slpath.c: path_sans_extname was failing when a dot was in a directory part of the name. 10. slsh/slsh.c: The names of environment variables defining the location of the global slsh.rc and the slsh library files may be specified in slsh/Makefile. 11. src/sltoken.c: Local buffer overflow when the size of an identifier exceeds 256 characters was found and corrected. 12. src/slarray.c: Leak fixed: Under some circumstances, a memory leak was generated when using user-defined "typedefd" objects in an array, e.g., typedef struct {a} Foo_Type; ()=[Struct_Type[1],@Foo_Type]; 13. src/slarray.c: Indexing a multi-dimensional array using a mult-dimensional array was broken. Now A[I] returns an array with the same dimensionality as I, regardless of the dimensionality of A. 14. New intrinsics: __is_callable (Mike Noble mnoble at space, mit, edu) __is_numeric (Mike Noble mnoble at space, mit, edu) __datatype (John Houck houck at space, mit, edu) mktime symlink Changes since 1.4.8 1. src/slarray.c: superfluous call to SLclass_add_math_op removed (Michael Noble <mnoble at space.mit.edu>) 2. src/slang.c: foreach (NULL) using("next"){} foo (); caused _NARGS=1 in foo. 3. src/slarrfunc.c: Fix to prevent sum(NULL) from causing a core-dump. 4. src/slimport.c: import (module, "") made equivalent to import(module,"Global"); This way, import(module, current_namespace()) will work when the current namespace is anonymous. 5. src/slospath.c: Several users have requested that I add the ability to define a load path and use that path when loading interpreter files. To this end, several new functions were added to the API: char *SLpath_get_load_path (void); int SLpath_set_load_path (char *path); /* Get and Set the path to be searched for files */ int SLpath_get_path_delimiter (void); SLpath_set_path_delimiter (int delimiter); /* Get and set the character delimiter for search paths */ int SLang_load_file_verbose (int verbose); /* if non-zero, display file loading messages */ New intrinsics include: set_slang_load_path get_slang_load_path path_get_delimiter These functions, nor the intrinsics have an effect on applications that use SLang_load_file_hook or SLns_load_file_hook for loading files. The change should be transparant to applications that use the stock load file mechanism. The main difference is that if one attempts to load a file with no extension, e.g., "foo", but the file does not exist, then the interpreter will try to load the more recent of "foo.sl" and "foo.slc". See src/slsh.c for how the functions may be used. 6. slsh/slsh.c: Updated to use the new search path code outlined above. Also, slsh is distributed with a collection of general purpose slang functions, including jed's provide/require functions. See slsh/README for more information. 7. doc/tm/cslang.tm: Modified the section describing the implemetation of intrinsic functions in an effort to clarify the discussion. 8. src/slang.c: tiny memory leak resulting from peephole optimzations added earlier found and fixed. 9. src/slarrmisc.c: new intrinsic: cumsum computes the cumulative sum of an array via the new SLarray_map_array function. 10. src/modules: perl compatible regular expression (pcre) module added. Changes since 1.4.7 1. src/sldisply.c: make sure SLtt_erase_line leaves the cursor at the beginning of a line in all cases. Previously, this happened only for terminals able to delete to the end of line _and_, when writing to the last line, the ability to insert a character. 2. doc/tm/cslang.tm: In the discussion of the MAKE_CSTRUCT_FIELD macro, SLANG_STRING_TYPE was used instead of SLANG_INT_TYPE (mnoble at space.mit.edu). Similarly, in the discussion of intrinsic structures, My_Window was used instead of My_Win dburke at head-cfa.cfa.harvard.edu. 3. src/slang.c: peephole optimizations of 1.4.7 were conflicting with __tmp optimizations. This was causing something as simple as define f() { variable a = [1.0:10.0:1]; variable b = a * 0.0; return a; } to fail. 4. src/slarray.c Allow ranges to index higher dimensional array. 5. slsh/slsh.c: Updated to allow a user specified search path. See slsh/README for more info. Changes since 1.4.6 1. src/slclass.c: Change "-??-" to "- ?? -" to avoid its interpretation as a trigraph. Miquel Garriga <miquel at icmab.es> 2. src/mkfiles/makefile.all: If compiling with mingw32, use "cp" instead of "copy". Miquel Garriga <miquel at icmab.es> 3. src/sllimits.h: Increased the size of the local variable and recursion stacks on 32 bit systems. 4. src/slarrfun.c: "sum", "min", and "max" intrinsic functions added. Since these may conflict with application defined function, they have been placed in their own module. To get them, use SLang_init_array_extra --- SLang_init_all will not pick up this module. Version 2 of the library will add these functions to the main array function module. 5. src/sltermin.c: Work around a bug in the solaris 7+8 tset program which improperly sets the TERMCAP environment variable (Paananen Mikko <mikkopa at cs.tut.fi>). 6. src/slprep.c: Added support for "#stop" and a few other useful or convenient features. See comments at the top of slprep.c for more details. (Mark Olesen <molesen at zeunastaerker.de>). 7. src/<misc>.c: "const" qualifier added to several places to put constant variables in rdata/text segment to be shared between other processes. ("Andrew V. Samoilov" <samoilov at usb.zp.ua>) 8. src/sldisply.c: If colors were defined using the "Sf" capability instead of the "AF" capability, then assume those are specified in BGR format instead of RGB. (Pavel Roskin <proski at gnu.org>) 9. slsh/slsh.c: "status" was not declared if compiled with SLSH_LIB_DIR defined. (mnoble at space.mit.edu) 10. slsh/Makefile.g32: new file to allow slsh to be compiled with mingw32. 11. src/sldisply.c,sltermin.c: if running as setuid/setgid, then limit access to the environment for such a process. <solar at openwall.com>. 12. src/slstd.c: New intrinsic function _get_namespaces may be used to get a list of currently defined namespaces. 13. src/slstruct.c: better support for pushing and popping structures from C via the SLang_push/pop_cstruct. See doc/text/cslang.txt for details. 14. slsh/Makefile.in: install target added 15. src/slang.c: additional peep-hole optimizations added 16. src/*.c: fixes it enable the library to be compiled without floating support support. Changes since 1.4.5 1. doc/tm/rtl/struct.tm: Typos in documentation for set_struct_fields corrected by Douglas Burke <dburke at head-cfa.harvard.edu>. 2. src/sldisply.c: VMS specific problem: SLang_TT_Write_FD was not getting initialized (Hartmut Becker <Hartmut.Becker at compaq.com>). 3. src/slarith.c: On a 64 bit system, it was possible that Int_Type objects were not getting properly converted to Double_Type. 4. src/sltoken.c: A unitialized memory reference fixed in the error handling of an empty character declaration (''). 5. src/slstd.c: call to _SLinit_slcomplex moved to slmath.c. This means that one does not get complex number support unless math support is also enabled. (suggested by Michael Noble <mnoble at head-cfa.harvard.edu>) 6. src/slclass.c: Make sure that when registering a class using SLANG_VOID_TYPE, the reserved class ids are not used. 7. src/slmisc.c, src/sltoken.c: moved SLatoi and friends from sltoken to slmisc.c. This avoids linking in the interpreter when it is not needed. 8. doc/tm/rtl/array.tm: Documentation for the "where" function corrected by <G.Milde at physik.tu-dresden.de>. 9. src/slkeypad.c: support added for F11 and F12 keys 10. src/slimport.c: Better handling of dlopen errors as suggested by Michael Noble <mnoble at head-cfa.harvard.edu. 11. src/slstruct.c: make sure field names have legal names. 12. src/slistruct.c: SLns_add_istruct_table added. 13. src/sltoken.c: New name-space specific functions added: SLns_load_file, SLns_load_string These may be used to load a file or a string into a specified namespace. Simarily, the "eval" and "evalfile" functions may now be given a second argument to specify a namespace. 14. src/slstd.c: __eqs function added to test for "sameness" of its arguments, __class_type returns information about how an object is classified, __class_id to return its class id. See examples/saveobj.sl for an example of the use of these functions. 15. src/slarray.c: a 2-d array can nolonger be specified in-line as, e.g., [[1,2],[3,4]]. This now produces a 1-d array: [1,2,3,4]. 16. src/slregexp.c: fix for case-insentive matches involving e.g., a\{1,3\} type regexps (Thomas Schultz <tststs at gmx.de>) 17. src/slarray.c: Allow setting elements of pointer type arrays to NULL, e.g., a[10] = NULL. 18. src/slsignal.c: If CYGWIN, then assume posix signal handling works. 19. src/slang.c: Do not allow an intrinsic function, variable, etc table to be added twice. 20. src/slarray.c: Added _isnull intrinsic for checking for NULL values of array elements. This is useful since something like "where(a==NULL)" does not check the individual elements, whereas "where(_isnull(a))" does. 21. src/sldisply.c: typo involving the initialization of Del_Eol_Str for terminals that do not have such capability. (Pavel Roskin <proski at gnu.org>) Changes since 1.4.4 1. Added QNX specific patches and fixed some typos that prevented it from compiling when _SLANG_OPTIMIZE_FOR_SPEED is 0. (Tijs Michels <tijs at vimec.nl>). 2. Make sure '#ifeval expr' evaluates up to the end of a line and no further. 3. src/sldisply.c: Do not look for pad info in the graphic charset pairs string. Also, when comparing space characters, be sure to take into account ACS. (Marek Paliwoda <paliwoda at inetia.pl>) 4. Trivial code cleanups to avoid BCC 5.x warnings. 5. src/mkfiles/makefile.all: BCC-specific tweaks (John Skilleter <John.Skilleter at pace.co.uk>) 6. SLang_push/pop_datatype made public 7. src/slutty.c: if tty is not initialized and an attempt is made to read from the tty, set errno to EBADF. 8. src/slkeypad.c: New function SLkp_set_getkey_function. This may be used to specify a different function to read keys. 9. src/slcurses.c: If an invalid keysequence is entered, simply return the characters of the sequence on successive getkey calls. 10. src/slarray.c: Inline arrays of the form [1f, 0] were not working. 11. src/sldisply.c: Make sure SLtt_get_screen size gets called by SLtt_initialize. 12. doc/tm/rtl/struct.tm: typeof in example for get_struct_field_names corrected by Chris Baluta. 13. modules/varray.c: example showing how a memory mapped array may be created. It also illustrates the free_fun callback for arrays. 14. examples/life.sl: a S-Lang implementation of Conway's life. 15. src/slclass.c: SLclass_dup_object function added. Although push/pop can be used to achieve a duplicated object, this function makes it a little easier. 16. src/slang.h: Prototyes involving "unsigned char" to represent data types have been modified to use SLtype, which is typedefed to be an unsigned char. V2 will use a different size for data types. 17. Misc tweaks to aclocal.m4, src/Makefile.in, etc to support MacOSX. I have not tested it on that system. 18. The library may now be compiled under CYGWIN using the same procedure as under Unix. 19. src/slkeypad.c: Some xterm-specific escape sequences added by Denis Zaitsev <zzz at cd-club.ru>. Changes since 1.4.3 1. Fixed a bug that shows up on 64 bit BigEndian machines--- it affected no others. 2. Fixed potential problem in pre-parsing binary strings. 3. Bug a fixed affecting only pure termcap-based systems. It has been around a while, I am surprised that it took so long to be discovered. Changes since 1.4.2 1. If init_NAME_module_ns does not exist in a module, then try to load init_NAME_module as long as the module is to be imported into the Global namespace. 2. src/sldisply.c: allow more than 200 rows and 250 columns. Who uses such windows? 3. Allow Void_Type to be specified for the data-type in array_map if the function returns nothing. 4. src/slarray.c: A statement such as [1:-1][[1:-1]] = [1:-1]; was causing a core dump. 5. src/sldisply.c: (Unix/VMS) SLsmg/SLtt routines will write using the file descriptor SLang_TT_Write_FD, which, by default, is initialized to fileno(stdout). 6. src/slposio.c: New C API functions: SLfile_get_fd returns the file descriptor associated with the SLFile object. SLfile_dup_fd: duplicate an SLFile object 7. src/slposio.c: New intrinsics: dup_fd (dup a file descriptor) 8. SLerrno.c: C API Function: SLerrno_set_errno. 9. SLerrno.c: More errno values added. 10. Raising complex types to powers supported. 11. slang.c: current_namespace was returning "global" instead of "Global" for the global namespace. 12. slang.c: `use_namespace("X");define f();' was not placing `f' into `X'. 13. path_is_absolute fixed to return integer 14. src/slarray.c: generate an error when an empty array is passed to array_map. 15. src/slarray.c: a=3; a[*] should return an array. 16. Make sure setlocale(LC_NUMERIC,"C") gets called. 17. slvideo.c: SLtt_set_cursor_visibility implemented for win32. 18. slvideo.c: SLtt_get_screen_size corrected for win32 by Zusha P. 19. configure: modified to not automatically assume that -ldl is required for dlopen. In addition, molesen at zeunastaerker.de sent patches for building dynamically linked library under irix. 20. slsh/Makefile: generated by configure. 21. modules/Makefile: generated by configure 22. src/slimport.c: If no module path has been set, fall back on $(prefix)/lib/slang/modules 23. src/Makefile.in: DESTDIR support added by Brad <brad at comstyle.com>. 24. src/Makefile.in: documentation is installed in $(prefix)/doc/slang and no longer in $(prefix)/doc/slang/$(slang_version) 25. sleep intrinsic can take a floating point number to sleep fractional seconds. 26. src/slang.c: fix SLang_run_hooks to accept a namespace qualifier. 27. New modules added to the module directory: fcntl, select, termios. Changes since 1.4.1 1. slang.c: Under certain conditions, the continue statement was not properly handled in do..while statements. src/test/loops.sl added for testing. 2. slparse.c: avoid potential (rare?) infinite loop when slang error occurs (Stanis³a Bartkowski <sb at protest.com.pl>). 3. slsmg.c: When SLsmg_init_smg is called, mark the display as trashed. 4. It is now possible to add intrinsics to their own namespace via new SLns_add* functions. Moreover, the import function now takes an optional additional argument that specifies a namespace. 5. New namespace intrinsics: use_namespace, current_namespace 6. Changed inner-product algorithm to minimize the number of cache misses. 7. sldisply.c: Kanji specific patch from Jim Chen <jimc at ns.turbolinux.com.cn>. 8. sldisply.c: Assume that Eterm and rxvt are xterm-like (Michael Jennings <mej at valinux.com>). 9. sldostty.c: mouse support added by Gisle Vanem <giva at bgnett.no>. 10. slsearch.c: avoid infinite loop if search string has no length. 11. SCO elf support added by Mike Hopkirk <hops at sco.com>. 12. slregexp.c: regexp \d+ was not working properly 13. keyhash.c: typos involving USER_BLOCK keywords corrected. (the use of USER_BLOCKs is discouraged). 14. New intrinsic variable: _slang_doc_dir. This specifies the installation location of the doc files. 15. Make sure it can compile with SLTT_HAS_NON_BCE_SUPPORT set to 0. Changes since 1.4.0 1. slw32tty.c: `v' key was not being handled on win32 systems. Also, Shift-TAB will now generate ^@-TAB. 2. New intrinsic function: strreplace. This is more flexible than str_replace. 3. VMSMAKE.COM: slstring added to list of files to get compiled. 4. slsh/Makefile, modules/Makefile: added patch from Jim Knoble <jmknoble at pobox.com> to create elf versions (make ELF=elf). 5. AIX IBMC patches from Andy Igoshin <ai at vsu.ru>. 6. autoconf/config.sub: tweaked to properly handle recent alpha systems. 7. If compiling on an alpha, add -mieee compiler flags. 8. SLang_roll_stack and SLang_reverse_stack functions made public. 9. SLang_free_function added. If you call SLang_pop_function, then when finished, call SLang_free_function. This does nothing in 1.X but may do something in 2.x. 10. src/slrline.c: Keybindings for ESC O A, etc added. 11. src/slsmg.c: SLsmg_write_nstring: avoid many loops if an extremely large value is passed (> 0x7FFFFFFF). 12. src/slregexp.c made thread safe 13. src/slsmg.c: Cursor was not always properly positioned when after SLsmg_touch_lines called. 14. If terminal does not have erase to eol capability, then use spaces. 15. doc/tm/strops.sl: doc for strcat updated to reflect its ability to concatenate N strings. 16. Documentation updated to indicate that floating point range arrays are open intervals such that [a:b] does not include b. slarray.c was modified to enforce this specification. Previously, whether or not b was included in the interval was indeterminate. 17. src/slsmg.c: bug involving SLsmg_set_screen_start fixed. 18. src/slparse.c: parser was failing to catch misplaced `}'. Changes since 1.3.10 1. If a floating point exception occurs and the OS allows the library to handle it without forcing a longjmp, then SL_FLOATING_EXCEPTION will get generated instead of SL_INTRINSIC_ERROR. Note: Linux provides no way to handle floating point exceptions without forcing a longjmp. In my opinion, this is a flaw. 2. SLang_pop_double was returning the wrong value for short and character types. 3. New intrinsic: is_struct_type(X) ==> non-zero is X is a struct. 4. typecast operation from user defined type to Struct_Type added. 5. slkeypad.c: DOS/Windows DELETE_KEY definition added (Doug Kaufman <dkaufman at rahul.net>) 6. slposdir.c: Do not depend upon the existence of rmdir on VMS systems. 7. slang.c: abs, sign, mul2, chs, sqr were not being treated as function calls. 8. sldisply.c:SLtt_cls: If the terminal is a color terminal but being used as a black and white terminal, then reset colors before clearing. 9. path_sans_extname intrinsic added. 10. slimport.c: If module defines deinit_NAME, will be be called prior to unloading the module. (Ulrich Dessauer <des at gmx.de>) Changes since 1.3.9 0. typedef unsigned short SLsmg_Char_Type added to slang.h. Applications that access SLsmg functions read/write_raw and SLsmg_char_at should use SLsmg_Char_Type unstead of unsigned short because this will be changed to unsigned long in version 2.0. 1. Documentation patches from Vlad Harchev <hvv at hippo.ru> added. 2. slstring.c: offsetof(SLstring,bytes) --> offsetof(SLstring,bytes[0]) to avoid compiler warning on some systems. 3. slcmplex.c: an int was used where a double should have beed used. 4. egcs g++ was optimizing slang.c:SLclass_push_ptr_obj away because it was declared as inline. In my opinion, this is another g++ bug. 5. sscanf intrinsic added. See docs. 6. SLmake_lut rewritten to correct incorrect handling of ranges with a hyphen at the end. 7. Small bug involving non-BCE terminals in SLsmg_set_color_in_region fixed. 8. Functions SLcomplex_asinh/acosh/atanh implemented. 9. install-elf will nolonger install .h files twice. 10. @Struct_Type may be used to create a struct. 12. X[i]++, X[i]-=Y, etc implemented. 13. Much of slw32tty.c rewritten to fix several bugs in the win32 tty support. In addition, if SLgetkey_map_to_ansi(1) has been called, then function and arrow keys will produce escape sequences that allow one to distinguish alt, ctrl, and shift function keys. 14. OS/2 specific typo in slposdir.c corrected (Eddie Penninkhof <wizball at xs4all.nl>). 15. slang.c:add_slang_function: On the very rare occasion that this function failed, memory would get freed twice. Changes since 1.3.8 1. Color was not enabled on VMS. 2. If MAKE_INTRINSIC was used to declare a function which takes arguments, then a typecast error would result when the function was called. New programs should not use MAKE_INTRINSIC since it bypasses argument type-checking. 3. src/sl-feat.h: SLTT_XTERM_ALWAYS_BCE variable added to force the assumption of the bce (background-color-erase) capability of xterm. The default is 0, which means to accept the terminfo setting. To force it to 1 during run-time, set the COLORTERM_BCE environment variable. This is useful when using, e.g., rxvt to login to a solaris system where the terminfo file will probably not indicate bce. 4. SLw32tty.c:SLang_init_tty: Open CONIN$ instead of using GetStdHandle. This is necessary if stdin has been redirected. 5. SLposdir.c: Stat structure contains new field `st_opt_attrs' that may be used to contain system specific information that `struct stat' does not provide. In particular, under win32, this field contains the file attributes, e.g., whether or not a file is hidden. 6. Appropriate typecasts added to avoid warnings on systems that do not support `void *'. 7. Characters in the range 128-255 are allowed in identifiers. 8. Correction to the documentation for SLang_init_tty (Ricard Sierra <irebulle at nexo.es>). 9. SLANG_END_*_TABLE macros added to quiet silly egcs compiler warnings. 10. typo in sltime.c caused it not to compile under Ultrix. 11. Speed improvement of binary operations involving arrays, particularly when used in conjunction with the __tmp function. 12. traceback messages include the filename containing the function 13. File local intrinsic variable `_auto_declare' added. If non-zero, any undefined global variable will be given static scope. 14. __uninitialize intrinsic function added. 15. listdir was returning NULL on empty directories. It has been changed to return String_Type[0]. It will return NULL upon error. 16. slang.h: if __unix is defined, then also define __unix__ (Albert Chin-A-Young <china at thewrittenword.com>). 17. foreach using extended to File_Type objects. See documentation. 18. Tweak to the inner-product operator such that if A is a vector, and B is a 2-d matrix, then A will be regarded as a 2-d matrix with 1 column. Changes since 1.3.7 0. configure script updated to autoconf 2.13. If /usr/include/slang.h exists, then the default prefix will be set to /usr. 1. Compile error fixed if _SLANG_HAS_DEBUG_CODE is 0. 2. Bug fix involving typecast(Array_Type, Any_Type). 3. __IBMC__ patches from Eddie Penninkhof <wizball at xs4all.nl>. 4. If A = Assoc_Type[] (Any_Type array), then A[x] automatically dereferences the Any_Type object. 5. Bug fixed involving Assoc_Type optimization cache. 6. Tweaks to SLtt_smart_puts for improved performace. 7. array_map modifed such that the first array in its argument list controls the number of elements in the output array. This is a backward compatible change and makes the function more flexible. 8. Additional tweaks to speedup array inary functions if _SLANG_OPTIMIZE_FOR_SPEED > 1. 9. Patch from Thomas Henlich <henlich at mmers1.mw.tu-dresden.de> fixing a problem with the `SLang_define_case' function, which allows customization of the upper/lower case tables. 10. strtrans and str_delete_chars intrinsic functions added. 11. tweaks to interpreter for some additional speed. Changes since 1.3.6 1. Added a modified version of a patch from Martynas Kunigelis <martynas at diskena.dammit.lt> to allow writes to the lower left corner. 2. SIZEOF_LONG changed to 4 for VMS alpha systems (Jouk Jansen <joukj at hrem.stm.tudelft.nl>). 3. MSC patches from gustav at morpheus.demon.co.uk (Paul Moore). He also contributed code for listdir with MSC. 4. SLsmg.c: Background color erase tweaks for terminals that lack this capability. 5. Fixed a NULL pointer dereference when doing Struct_Type[2][0]. 6. Added slsh/scripts/ls and slsh/scripts/badlinks. `ls' is designed for non-Unix systems and `badlinks' finds all symbolic links in specified directories that point to non-existent files. 7. SLang_Version_String and intrinsic variable _slang_version_string added. 8. stat_file modified under win32 such that a trailing `\' is stripped if present. 9. stat_is intrinsic modified to return a character instead of an integer. 10. The matrix-multiplication operator `#' now performs inner-products on arrays, e.g., if A and B arrays: A = A_i..jk B = B_kl..m Then, (A#B)_i..jl..m = A_i..jk B_kl..m where k is summed over. This means that `#' is a matrix multiplication operator for 2-d arrays, and acts as a dot-product operator for 1-d arrays. In the process, it has been extended to complex numbers. 11. _reshape intrinsic function added. Unlike `reshape', this function creates a new array and returns it. 12. Array indexing via characters works again, e.g., A['a']. Changes since 1.2.2 0. New assignment operators: *= /= &= |= The addition of these operators meant that some of the internal byte-codes had to be modified. This change should only cause problems with byte-compiled or preprocessed .sl files. As far as I know, only the JED editors uses this feature. So, after upgrading the library, and before running JED, do the equivalent of rm $JED_ROOT/lib/*.slc That is, delete the byte-compiled .slc files. 1. Now the language supports `!if ... else' statements. 2. New intrinsics: __is_initialized: This may be used to see whether or not a variable is initialized, e.g, __is_initialized (&variable); __get_reference: Returns a reference to an object with a specified name. rmdir, rename, remove (slfile.c): these return 0 upon success, -1 upon failure and set errno getpid, getgid, getppid (slunix.c) _typeof: This is similar to `typeof' except in the case of arrays where it returns the data type of the array __pop_args, __push_args: see documentation fseek, ftell, and symbolic constants SEEK_END, SEEK_CUR, SEEK_SET sleep usage 3. `Conj' function added to get the complex conjugate 4. New array module that implementes additional array functions, e.g., transpose, matrix multiplication, etc... Use `SLang_init_array' to initialize. 5. An array such as [[1,2,3],[4,5,6]] is interpreted as a 2-row 3-column array. 6. Amiga patches from Jörg Strohmayer <j_s at gmx.de>. 7. New table types: SLang_IConstant_Type SLang_DConstant_Type These are useful for defining symbolic constants. See slmath.c and slfile.c for examples of their use. 8. A new pseudo-function: __tmp This `function' takes a single argument, a variable, and returns the value of the variable, and then undefines the variable. For example, variable x = 3; variable y; y = __tmp(x); will result in `y' having a value of `3' and `x' will be undefined. The purpose of this pseudo-function is to free any memory associated with a variable if that variable is going to be re-assigned. For example, consider: variable x = [1:10:0.1]; x = 3*x^2 + 2; At the time of the re-assignment of `x' in the last statement, two arrays will exist. However, x = 3*__tmp(x)^2 + 2; results in only one array at the time of the assignment, because the original array associated with `x' will have been deleted. This function is a pseudo-function because a syntax error results if used like __tmp (sin(x)); 9. New low-level push/pop functions that are designed specifically for use in constructing the push/pop methods of application defined data types. These functions have names of the form: SLclass_push_*_obj SLclass_pop_*_obj where * represents int, long, char, short, ptr, double, float. See sltypes.c to see how they are used by, e.g., SLANG_INT_TYPE. 10. New module import facility. See modules subdirectory for examples. To enable this, use SLang_init_module in you application. Modules will be searched in the following order 1. Along the path specified by the `set_import_module_path' function, or by the C functiion SLang_set_module_load_path. 2. Along the path given by the SLANG_MODULE_PATH environment variable. 3. Along a system dependent path, e.g., LD_LIBRARY_PATH 4. In the current directory. New interpreter intrinsics include: import (String_Type MODULE_NAME); set_import_module_path (String_Type PATH); String_Type get_import_module_path (); 11. New integer and floating point types added to the language. Now all basic C signed and unsigned integer types are supported: C bindings S-Lang bindings --------------------------------------- SLANG_CHAR_TYPE Char_Type SLANG_UCHAR_TYPE UChar_Type SLANG_SHORT_TYPE Short_Type SLANG_USHORT_TYPE UShort_Type SLANG_INT_TYPE Int_Type SLANG_UINT_TYPE UInt_Type SLANG_LONG_TYPE Long_Type SLANG_ULONG_TYPE ULong_Type SLANG_FLOAT_TYPE Float_Type SLANG_DOUBLE_TYPE Double_Type For example, `Long_Type[10]' creates an array of 10 longs. 12. New intrinsic: set_struct_field. See function reference for more info. ----- snapshot slang1.3_981030 made available ----- 13. Type synonyms added: Int16_Type, UInt16_Type (16 bit (un)signed integer) Int32_Type, UInt32_Type (32 bit (un)signed integer) Int64_Type, UInt64_Type (64 bit (un)signed integer) Float32_Type (32 bit float) Float64_Type (64 bit float) Not all systems support 64 bit integers. These synonyms are useful when one needs integers and floats of a definite size. 14. array_sort changed to use qsort. The main reason for this is that the previous sorting method was derived from a numerical recipes merge sort. 15. New namespace manipulation functions available. When a function or variable is declared as `static', it is placed in the private namespace associated with the object being parsed (a file). By default, there is no way of getting at that function or variable from outside the the file. However, the private namespace may be given a name via the `implements' function: implements ("A"); Then the private variables and functions of the namespace A may be accessed via A->variable_name or A->function_name. The default global namespace is called `Global'. For example, the intrinsic function `message' is defined in the global namespace. One may use either of the following forms to access it: message ("hello"); Global->message ("hello"); ----- snapshot slang1.3_981104 made available ----- 16. New intrinsics: strtok (See documentation) length (Get the length of an object) 17. New data type added: Any_Type. An array of such a type is capable of holding any object, e.g., a = Any_Type [3]; a[0] = 1; a[1] = "string"; a[2] = (1 + 2i); Dereferencing an Any_Type object returns the actual object. That is, @a[1] produces "string". 18. Associative arrays added. See documentation. 19. New `foreach' statement. See the section on `foreach' in doc/text/slang.txt as well as the examples in examples/assoc.sl and src/calc.sl. 20. Oops. sign function was broken. 21. array_sort modified to also accept &function_name. ----- snapshot slang1.3_981116 made available (1.3.4) ----- 22. Before, it was necessary for the aplication to to call SLang_init_slassoc to enable associative array support. This is nolonger necessary if associative array support is enabled in sl-feat.h. 23. Examples in the documentation modified to use foreach whenever a simplification occurred. 24. Max screen size for 32 bit systems inclreased to 256 rows. 25. `private' keyword added to prevent access to an object via the namespace. This works exactly like `static' except that `static' objects may be accessed via the namespace. 26. structure access methods now available for application defined types (cl_sput, cl_sget). Also, note that array access methods are also available. See slassoc.c for examples. 27. If x is a string, then x[[a:b]] produces a string composed of the characters x[a], ... x[b]. 29. New intrinsics: listdir: This returns the filenames in a specified directory as an array of strings. 30. Source code for intrinsic functions reorganized in a more coherent fashion. In particular, SLang_init_slfile and SLang_init_slunix are obsolete (though still available) and applications should call a combination of the new functions: SLang_init_stdio() /* fgets, fopen, ... */ SLang_init_posix_process () /* getpid, kill, ... */ SLang_init_posix_dir () /* mkdir, stat, ... */ Note that `unix_kill' has been replaced by `kill'. So, if you use unix_kill in your application, change it to `kill'. 31. It is now safe to redefine an object while executing the object, e.g., this is now ok: define f(x) { eval ("define f(x) { return x; }"); } 32. Binary strings added. This means that it is now possible to use strings with embedded null characters. Too fully exploit this new feature, `fread' and `fwrite' functions were added to the stdio module. In addition `pack', `unpack', `sizeof_pack', `pad_pack_format' were added for converting between binary strings and other data types. See Stdio chapter of the documentation for more information. 33. New structure intrinsic: set_struct_fields. This is useful for setting the fields of a structure without doing each one individually. 34. Interpreter now understands __FILE__ and __LINE__ as referring to the file name and line number of the object being parsed. 35. New intrinsic: array_map. This applies a function to each element of an array and returns the result as an array. 36. The documentation for the intrinsic functions has been updated and organized into a more coherent form. 37. New interface to C structures. See the documentation. 38. Modifications to the interpreter integer types so that short and int are equivalent whenever sizeof(short)==sizeof(int). Ditto for int and long. This reduces the code size. 39. NULL is equivalent to 0 in while and if statements, e.g., x = NULL; if (x) { never_executed (); } while (x) { never_executed (); } 40. `public' made a keyword to for symmetry with `private' and `static', e.g., public define a_public_function (); public variable a_public_variable; 41. semantics of `implements' modified such that the default variable and function declarations are `static', i.e., define xxx (); % ==> public function implements ("foo"); define yyy (); % ==> static function 42. Patch from Martynas Kunigelis <kunimart at pit.ktu.lt> adding more line and symbol drawing characters. Also a patch from k-yosino at inatori.netsweb.ne.jp forcing a flush when disabling use of the terminal's status line. --- Version 1.3.5 released --- 43. Corrected the name of SLang_(sg)et_array_element to be consistent with the documentation. 44. Fixed a bug involving orelse and andelse statements when _debug_info is non-zero. 45. The _apropos intrinsic modified to work with namespaces. In fact, it now returns an array of matches, or if called with out a namespace argument, it returns values to the stack for backward compatibility. 46. strchop and strchopr functions modified to return arrays. (this changes was actually made in 1.3.5). 47. Semantics of strcompress modified to be more useful. The new semantics are probably more natural and should pose no compatibility problems. 48. The `*' operator may be used in array index expressions and is equivalent to `[:]', e.g., a[*,1] means all elements in column 1 of the 2d array. 49. New intrinsics to convert bstrings <--> arrays: bstring_to_array array_to_bstring 50. New timing intrinsics: tic(); toc(); times (); Also, unix_ctime renamed to ctime (This change occurred in 1.3.5). 51. strcat modified to accept more than 2 arguments: strcat ("a", "b", ..., "c") ==> "ab...c"; 52. %S in format specifiers will convert the object to its string representation and use it as %s. 53. strtok defaults to using " \t\r\n\f" if called with one argument. 54. fgetslines takes optional second argument that specifies the number of lines to read. 55. If typeof(A) is IStruct_Type, and the corresponding C pointer is NULL, then pushing A will result in pushing NULL. This allows A to be compared to NULL. 56. More optimization of arithmetic operations to improve speed. My tests indicate that the resulting code involving arithmetic operations are about twice as fast as python (1.5) and about 20% faster than perl 5. 57. Patches from Andreas Kraft <kraft at fokus.gmd.de> disabling the listdir intrinsic function if compiled with MSC. Apparantly, the MSC compiler does not support posix functions such as opendir (although other vendors, e.g, Borland, have no problem with this). 58. `array_sort' intrinsic may be used without a comparison function. See docs. 59. Spelling errors in slang.tm corrected by Uichi Katsuta <katsuta at cced.mt.nec.co.jp> (Thanks!). 60. Default install prefix changed from /usr to /usr/local 61. Changes made to SLtt/SLsmg code so that when a color definition is made via, e.g., SLtt_set_color, then the SLsmg interface will be get automatcally notified so that the next SLsmg_refresh will produce the correct colors. In addition, SLsmg_touch_screen added. 62. It is now possible to evaluate S-Lang expressions with the S-Lang preprocessor e.g., #ifeval (_slang_version > 9900) || (x == 1) 63. sl-feat.h: Patch from Jörg Strohmayer <j_s at gmx.de> to define _SLANG_MAP_VTXX_8BIT=1 for AMIGA. 64. New intrinsics: strjoin. This joins elements of a string array. localtime, gmtime 65. New SLsmg function: SLsmg_reinit_smg. Instead of calling SLsmg_reset_smg followed immediately by SLsmg_init_smg when processing SIGWINCH signals, call SLsmg_init_smg instead. This will allow SLsmg based code to properly redraw themselves when running in a SunOS cmdtool window by working around a bug in cmdtool. =========================================================================== Changes since 1.2.1 1. slcmd.c was not parsing characters in single quotes correctly, e.g., 'a'. Changes since 1.2.0 1. Oops. A NULL pointer could be referenced in slcmd.c. Changes since 1.0.3 beta -1. The SLKeyMap_List_Type structure has been modified to allow the name of the keymap be be an arbitrary length. Unfortunately, this change breaks backward compatibility. So, if you have programs ^^^^^^^^^^^^^^^^^^^^ that are dynamically linked to previous BETA versions of 1.0, you ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ will have to recompile those applications!!! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 0. The variable SLsmg_Newline_Moves has been renamed to SLsmg_Newline_Behavior with the following interpretation: #define SLSMG_NEWLINE_IGNORED 0 /* default */ #define SLSMG_NEWLINE_MOVES 1 /* moves to next line, column 0 */ #define SLSMG_NEWLINE_SCROLLS 2 /* moves but scrolls at bottom of screen */ #define SLSMG_NEWLINE_PRINTABLE 3 /* prints as ^J */ 1. Added patches from Joao Luis Fonseca <joaolf at centroin.com.br> to src/mkfiles/makefile.all and a necessary OS/2 specific declaration to slvideo.c. I also added the Watcom patches from Bill McCarthy <WJMc at pobox.com> to makefile.all. 2. The terminfo code is now aware of the complete set of terminfo definitions. However, the screen management routines support a small subset. (Eric W. Biederman <ebiederm+eric at npwt.net>). 3. Improvements to the SLsmg scrolling alogorithm. 4. SLang_process_keystring and SLang_make_keystring now return NULL upon failure. 5. SLcomplex_sqrt branch cut modifed to be consistent with FORTRAN. 6. If the system supports vsnprintf and snprintf, they are used. The assumption is that they return EOF upon failure. My linux man page for these functions have conflicting statements regarding this. 7. Simplified handling of memory managed types. Now it is possible to pass the managed object directly to the intrinsic function. See slfile.c for an explicit example of this technique. Similarly, references may also be passed and the function SLang_assign_to_ref may be used to assign values to the referenced object. This is also illustrated in slfile.c. 8. QNX specific tweak to slfile.c from Pavanas Abludo Incusus <pavanas at ccia.com>. 9. Fixed a problem where, e.g., x = Double_Type [7,8,9]; y = x[0,[:],[:]]; returned y = Double_Type[8*9] instead of the more intuitive result Double_Type[8,9]; 10. SLcmd_Cmd_Table_Type structure changed to permit an unlimited number of arguments. The changed should be backward compatible except that a recompilation of the application will be necessary. 11. New SLsmg function: SLsmg_set_color_in_region may be used to set the color of a specified region. See demo/smgtest.c for an example of how this is used. Another use would be to draw shadows around a box. 12. OS2 ICC patches from Eddie Penninkhof <eddie.penninkhof at tip.nl>. 13. Grammar tweaked to make the pow (^) operator postfix-unary. This makes more sense mathematically so that: a^b^c ==> a^(b^c); -(a)^b ==> -(a^b); 14. New struct specific intrinsics: get_struct_field_names get_struct_field_value _push_struct_field_values See function reference for more information on these. Changes since 1.0.2 beta 0. SLtt_init_video, SLtt_reset_video, SLsmg_resume_smg, SLsmg_suspend_smg have been modifed to return 0 upon success, or -1 upon error. 1. Configure script modified to report slang version as 1.0.x instead of 1.0.0x. 2. Bug fix involving automatic detection of color (Unix) 3. slvideo.c bug fixed (WIN32, Thanks Chin Huang <cthuang at vex.net>) 4. Slsignal modified so that fork is not used for CYGWIN32, suggested by vischne at ibm.net. 5. Solaris ELF patches integrated into configure.in. Now ELF support is available for Linux and Solaris. Thanks Jan Hlavacek <lahvak at math.ohio-state.edu>. 6. The library now works with MING32 and should work with CYGWIN as well. See INSTALL.pc and src/mkfiles/README for more information. Do NOT use the configure script under these environments. 7. A new IBMPC_SYSTEM function added that affects WIN32, MSDOS, and OS/2 systems: SLang_getkey_map_to_ansi (int enable); If `enable' is non-zero, arrow and function keys will be mapped to the ansi equivalents. 8. The WIN32 terminal support has been modified to be more consistent with the other platforms. In particular, mouse button press reporting has been added (SLtt_set_mouse_mode), and bright color support appears to have been fixed. Note: For MINGW32 and CYGWIN32, use src/mkfiles/makefile.all. Do not use the Unix configure script because WIN32 is NOT Unix. 9. Several changes to slvideo.c that deals with the proper use of the scroll region for DOS/Windows type systems. 10. demo/smgtest.c has been enhanced. 11. Some cleanup performed to src/slprepr.c 12. WIN32 and WIN16 preprocessing symbols are defined when appropriate. Changes since 1.0.1 beta 1. More VMS patches. Thanks Andy. Changes since 1.0.0 beta 1. Fixed a bug in the automatic detection of color terminal 2. Patches to get it to compile on OS2 and VMS 3. Replaced \r\n in slarray.c with \n Changes since 0.99-38 0. Many, many changes to the interpreter. See documentation. 1. SLang_free_intrinsic_user_object shortened via define on VMS. 2. Make sure slang.h does not defined REAL_UNIX_SYSTEM on OS/2. 3. New search paths for termin directories include $HOME/.terminfo and /usr/share/terminfo. 4. SLsystem function added. This is a replacement for `system'. It implements POSIX semantics for POSIX systems. Although Linux claims to be a POSIX system, it's `system' routine is broken. 5. color names color0 ... color7, brightcolor0, ... brightcolor7 added for Unix and VMS systems. Changes since 0.99-37 1. SLang_input_pending returns -1 if Ctrl-Break pressed (DOS specific). 2. SLtty_VMS_Ctrl_Y_Hook added for Ctrl-Y trapping. Keep in mind that this is called from an AST. 3. Documentation updates 4. Fixed bug dealing with keymaps with escape sequences involving characters with the high bit set. 5. slkeypad code ported to DOS 6. SLsmg_write_raw and SLsmg_read_raw functions added. 7. Compilation error under QNX fixed. 9. Small change involving SLang_flush_input. Changes since 0.99-36 1. Oops fixed a bug in alternate character set handling when SLtt_Use_Blink_For_ACS is set. This bug only affected DOSEMU. 2. slvideo.c modification that affects DJGPP version of library. Now the screen is saved and restored. 3. Updates to slcurses.c by Michael Elkins. 4. If a color called `default' is specified, the escape sequence to set the default color will be sent. Be careful, not all terminals support this feature. If your terminal supports it, e.g., rxvt, then using setenv COLORFGBG default is a good choice. Changes since 0.99-35 1. Fixed alt char set bug introduced in 0.99-35. 2. New intrinsic: _stk_reverse 3. New demos: keypad, smgtest, pager 4. The environment variable COLORFGBG may be used to specify default foreground background colors, e.g., in csh use: setenv COLORFGBG "white;black" to specify white on black as the default colors. This also means that a color name of NULL or the empty string "" will get mapped to the default color. 5. Improved curses emulation provided by Michael Elkins (me at muddcs.cs.hmc.edu). 6. Small bug fix to SLang_flush_output provided by Balakrishnan k <MDSAAA27 at giasmd01.vsnl.net.in>. 7. Updated some documentation in doc/cslang.tex (Gasp). 8. Update vmsmake.com file provided by Martin P.J. Zinser (m.zinser at gsi.de). Changes since 0.99-34 0. OS/2 video problem solved by Rob Biggar (rb14 at cornell.edu). 1. The way the interpreter internally handles strings has changed. This should not affect programs which utilize the library. Now all strings returned by the function SLang_pop_string should be freed after use. The SLang_pop_string function will always set the value of the second parameter passed to it to a non-zero value. For this reason, programs should use the new function SLpop_string and always free the string returned by it after use. 2. If SL_RLINE_NO_ECHO bit is set in the readline structure, the user response will not be echoed. 3. If terminal is xterm, the TERMCAP environment variable will be ignored. This change was necessary because of the braindead TERMCAP setting created by the latest version xterm. 4. Some of the keymap routines were re-coded. Now it is possible to have lowercase characters as part of the prefix character sequence. 5. New modules. See demo/pager.c for information. See also the slrn source code for a more sophisticated use. SLscroll: may be useful for routines that deal with displaying linked lists of lines. SLsignal: POSIX signal interface for programs that use SLsmg and SLtt modules. doc/signal.txt may also prove useful. SLkeypad: Simplified interface to SLang keymaps. SLerrno: System independ errno routines Changes since 0.99-33 1. A couple of interpreter bug fixes. 2. Some macros, e.g., MEMSET, removed from slang.h. I do not feel that they belong there and it is unlikely that they are used by others. I made them avalable in the file src/jdmacros.h for anyone whose code depends on them. 3. The functions jed_mem??? have been renamed to SLmem???. 4. New intrinsic: _obj_type returns type information about object on top of stack. Changes since 0.99-32 1. appropriate header files added for VMS 2. Oops. 0.99-32 introduced a bug positioning cursor. :( Changes since 0.99-31 1. Simple minded curses emulation added. This should help those migrating from curses. See slang/src/curses/*.c for sample curses demo programs that the SLsmg routines can handle. See also slang/src/slcurses.c for some wrapper functions. 2. Changed <config.h> to "config.h" in all source files. 3. If system lacks terminfo directories, it is compiled with termcap support. This generalizes and replaces the test for NeXT. 4. New functions for slang/src/sldisply.c: void SLtt_get_screen_size (void); SLtt_Char_Type SLtt_get_color_object (int); void SLtt_set_color_fgbg (int, SLtt_Char_Type, SLtt_Char_Type); The first function attempts to deduce the correct values of SLtt_Screen_Rows and SLtt_Screen_Cols. This function is called by sltt_get_terminfo. New constants such as SLSMG_COLOR_BLACK, SLSMG_COLOR_RED, ... have been added to slang.h to facilitate the use of SLtt_set_color_fgbg. 5. Improved error messages 6. ELF support. Do: make elf; make install-elf Changes since 0.99.30 1. Small bug fixed that affects 64 bit machines with a certain byte ordering. 2. slutty.c: _POSIX_VDISABLE is used if defined. Changes since 0.99.29 0. BIG change in handling keymaps. Specifically, this change effects the change of the `f' field of the SLang_Key_Type structure. Before, this was VOID_STAR, now it is a union. The new change is much more portable. In addition, the function `SLang_define_key1' has been removed and replaced by `SLkm_define_key'. See src/slrline.c for the use of this new interface. For a short time, the old interface will be available if the preprocessor symbol `SLKEYMAP_OBSOLETE' is defined when slang is compiled. See jed and slrn source for more examples. 1. SLang_getkey now reads from /dev/tty (unix). 2. If the first argument to SLang_init_tty is -1, the current value of the interrupt character will not be changed (unix). 3. New intrinsic: time Changes since 0.99.28 1. Oops! Horrible bug in src/slmemcmp fixed. 2. slvideo: init_video modified to be more consistent with VMS/Unix routine. Changes since 0.99.27 1. More changes to the configure script 2. It looks like hpterm support is in place. This terminal has a glitch that prevents efficient screen updating. 3. New SLsmg function: void SLsmg_write_color_chars (unsigned short *s, unsigned int len) This function may be used to write a string of characters with attributes. Changes since 0.99.26 1. Slang now uses a configure script under Unix to configure itself. 2. New intrinsic functions include _stk_roll, strchop, strchopr. 3. Terminals which require an escape sequence to make their arrow keys work are now sent the escape sequence. Changes since 0.99.25 1. New SLsmg variables: SLsmg_Newline_Moves SLsmg_Backspace_Moves These variables control the interpretation of newline and backspace characters in smg. Changes since 0.99.24 1. SLSMG_RTEE_CHAR, etc... added to OS/2 part of slang.h 2. Small fix for aix-term Changes since 0.99.23 0. The makefile for unix has been completely re-written. 1. Some problems dealing with certain color terminals have been resolved. 2. `g' generic type added to SLcmd. Changes since 0.99.22 0. The Macro `VOID' has been removed. The whole point of this macro was to mimick `void *' declarations for compilers that did not support such a construct. Instead of `VOID *', slang.h now defines `VOID_STAR' and all `VOID *' declarations have been renamed to `VOID_STAR'. If you use the VOID macro in your application, you have two choices: 1. Rename all occurances of VOID * to VOID_STAR 2. Add: #define VOID void somewhere appropriate. 1. \< and \> regular expressions added. Changes since 0.99.21 1. Oops. I added too much linux stuff (see 3 below). Some of it backed out to Linux only. Changes since 0.99.20 1. Problem on some VMS systems which lack prototype for atof fixed. 2. New function: SLtt_set_mouse_mode. This is used to turn on/off mouse reporting on Unix and VMS systems. 3. The terminal type `linux' is now recognized by the SLtt interface--- even if there is no termcap/terminfo entry for it. Changes since 0.99.19 1. User definable types must now have object identification numbers larger than 127. The lower limit used to be 100 but this comflicts with many applications (as well as slang itself) using lower case letters as the object number, e.g., create_array ('s', 10, 1); which creates an array of 10 strings (object number 's' = 115). 2. New intrinsic: array_info available. 3. regular expression matching bug involving \{m,n\} expressions fixed. 4. New module: slprepr.c. This gives programs the ability to use the slang preprocessor. 5. News slsmg functions: SLsmg_suspend_smg () and SLsmg_resume_smg (). These are designed to be used before and after suspension. The SLsmg state is remembered and a redraw is performed by the resume_smg function. 6. The function `sltty_set_suspend_state' is now available for Unix systems. It may be used to turn on/off processing of the suspend character by the terminal driver. 7. If SLtt_Try_Termcap is 0, the TERMCAP variable will not be parsed. 8. SLang_TT_Read_FD variable is now available for unix. This is the file descriptor used by SLang_getkey. 9. New preprocessor symbols available: SLMATH : If math functions are available SLUNIX : If unix system calls are available SLFILES : Stdio functions available FLOAT_TYPE : Floating point version Changes since 0.99.18 1. New intrinsic function: strcompress. This collapses a string by removing repeated characters. For example, define collapse (f) { while (str_replace (f, " ", ",")) f = (); return strcompress (f, ","); } collapse (", ,a b c ,,,d e,f "); returns: "a,b,c,d,e,f" 2. QNX support added. 3. New Functions (unix only): SLtt_tgetstr, SLtt_tgetnum, SLtt_tgetflag. 4. Fixed parsing of Octal and Hex numbers so that incorrect values are flagged as errors. Also, both lower and uppercase values may be used in HEX numbers, e.g., 0xa == 0XA == 0Xa == 0xA. 5. MS-Windows support added. Compile using makefile.msw. This creates `wslang.lib'. 6. New SLsmg functions: SLsmg_get_row, SLsmg_get_column. These return the current position. Changes since 0.99.17 1. I have added limited termcap support although slang is still a terminfo based system. The support is provided via the TERMCAP environment variable. If this variable exists and contains a termcap entry for which there is no reference to another entry (via tc field), it will be used to setup the terminal. If the TERMCAP variable does not exist, or it refers to a file, terminfo is used instead. This is not really a limitation since one can set this variable in a way that slang likes by using `tset -s'. The motivation for this support is two-fold: a. Slang programs can now run inside the screen program which sets the TERMCAP variable appropriately. b. A user can now correct defective termcap entries (e.g., for Linux), and have those corrections made available to slang via the `tset' command, e.g., by putting something analogous to: setenv TERMCAP /corrected/termcap/file/absolute/path/name eval `tset -s terminal-name` in the .login file. c. This also means that I can distribute corrected termcap entries for common terminals. Changes since 0.99.16 1. Inadequate terminfo entries for `linux' terminal are compensated for. 2. Terminals with the ``Magic cookie glitch'' are flagged as having an unusable highlighting mode. changes since 0.99.15 1. Better checking of parameters passed to search routines. 2. Problem with line drawing characters fixed. changes since 0.99.14 1. Ran code through purify. Fixed one problem reported in slkeymap.c 2. Fixed a bug in sldisply.c regarding mono-attributes. 3. Code ready for ELF changes since 0.99.13 1. SLtt_Has_Alt_Charset variable added to xterm.c. This is motivated by the sad, pathetic fact that although some termcap/terminfo databases suggest that the terminal can do line drawing characters, the terminal cannot. 2. SLsmg_write_nstring function added. This function may be used to write only n characters of a string padding wit hblanks if necessary. 3. If the environment variable COLORTERM exist, SLtt_get_terminfo will set SLtt_Use_Ansi_Colors to 1. 4. Sltt_set_cursor_visibility function added. If passed a zero integer value, the cursor is hidden; otherwise, it is made visible. changes since 0.99.12 1. SLsmg now uses the `te' and `ti' termcap entries if present. Apparantly some terminals need to be put in cursor addressing mode. This also has the effect of restoring the screen of the xterm to what it was before the program was executed. 2. For some types of code, slang is 20% faster! This is especially noticeable for branching constructs inside tight loops or recursive functions. changes since 0.99.10 1. New version control added: A new preprocessor symbol was added: SLANG_VERSION This is a 6 digit integer of the form: abcdef This corresponds to version number ab.cd.ef. So for version 0.99.11: #define SLANG_VERSION 9911 In addition, the intrinsic variable `SLang_Version' was changed from a string to an integer that has the value SLANG_VERSION. This also implies that the interpreter variable _slang_version is now an integer. changes since 0.99.9 1. The terminfo code failed to recognize the automatic margin flag. This has been corrected. In addition, the display code nolonger resets the character set upon initialization. This is considered to be a good thing. 2. There is a new program in slang/doc called `texconv' that will produce a nicely formatted ascii document from the tex formatted ones. In addition, new documentation has been added: slang.tex which describes the syntax of the slang programming language and cslang.tex which describes the C interface to the library. The latter document is far from complete but it is a start. 3. A new variable declaration keyword has beed added: global_variable This keyword is useful for declaring global variables from within functions. Such a feature simplifies some scripts. 4. The SLsmg line drawing functions are now in place. changes since 0.99.8 1. \d may now be used in regular expressions to specify a digit. In addition, \e specifies an escape character. So for example, `\e\[\d;\dH' matches an ANSI cursor position escape sequence. 2. Small bug in dealing with terminals that have automatic margins has been fixed. 3. When compiled with -DSLANG_TERMINFO will use terminfo. This means that there is no need to link to termcap. changes since 0.99.7 1. New function added to the readline package: int SLang_rline_insert (char *s); this may be used to stuff strings into the rline buffer. SLSC exploits this feature. changes since 0.99.6 1. ALL macros beginning with LANG have been changed to use SLANG as the prefix. For example, the macro LANG_IVARIABLE has been renamed to SLANG_IVARIABLE. If you have used one of these macros, please make the change. 2. Application defined types. See demo/complex.c for an example that defines complex numbers and overloads the binary and unary operators to work with them. changes since 0.99.5 1. New interface for application defined objects. Functions include: extern SLuser_Object_Type *SLang_pop_user_object (unsigned char); extern void SLang_free_user_object (SLuser_Object_Type *); extern void SLang_push_user_object (SLuser_Object_Type *); extern SLuser_Object_Type *SLang_create_user_object (unsigned char type); This means that S-Lang scripts do not have to worry about freeing structures, arrays, etc... A consequence of this fact is that the intrinsic function `free_array' has been removed. See examples of this exciting new feature in slang/demo. 2. Better documentation and examples. See slang/doc/*.* as well as examples in slang/demo. 3. Memory allocation macros have changed from MALLOC to SLMALLOC, etc... Applications are encouraged to use these rather than `malloc' because by compiling your application AND the slang library with the -DMALLOC_DEBUG will link in code that checks if you have corrupted memory, freed something twice, etc... Use the function `SLmalloc_dump_statistics' for a report of memory consumption by your program. changes since 0.99.4 1. cleaned up the source some and I changed the names of the hooks user_whatever to `SLang_User_Whatever'. This makes them more consistent with other external functions and variables and helps avoid name space pollution. changes since 0.99.3 * added screen management stuff * added a new help file reader (see help directory) * DOUBLE precision is now the default. I think that this makes more sense for an interpreted langauge. * searching routines added. changes since 0.99.2 * added low level tty support for VMS, DOS, and Unix * slang readline added * keymap support * files restructured so that programs can link, say, the readline library and not get the whole interpreter linked in. changes since 0.99.1 * obscure bug in regular expression fixed * optimizing performed for 10% speed increase in speed for some language constructs changes since 0.99.0 * semantics of the `switch' statement changed to be more C-like with the addition of the `case' keyword. For example, one can write: switch (ch) { case 'A': something (); } { case 'B': something_else (); } { case 3.14: print ("Almost PI"); } { case "hello": print ("hi"); } Note that one may mix data types without the possibility of a type mismatch error. changes since 0.98: * matrix package added. Currently only matrix multiplication and addition is supported. More functions will be added (determinants, inverse, etc..) This support is provided by the `init_SLmatrix ()' call. This support provides the following S-Lang intrinsics: matrix_multiply, matrix_add * New S-Lang core intrinsic: copy_array : copys the contents of one array to another changes since 0.97: * Double precision floating point supported. Use the -DFLOAT_TYPE -DUSE_DOUBLE compiler flags to enable this. Note that S-Lang does not support single precision and double precision floating point number SIMULTANEOUSLY. You must choose one or the other and stick with it! * Byte compiling is now more than simple preprocessing. This results in about a 20% decrease in loading time. This also means that if you rebuild your application, you MUST re-bytecompile. * New syntax added: Consider a function f that returns multiple values. Then to assign these values to, say var_1, and var_2, simply write: (var_1, var_2) = f (); This is an alternative to: f (); =var_2; =var_1; Changes since 0.96: It is now possible to use short circuit boolean evaluation of logical expressions is the `orelse' and `andelse' constructs. Previously, these constructs were only available at the infix level. The new syntax looks like (example taken from JED's rmail.sl): if (orelse {re_bsearch("^\\CFrom:.*<\\(.+\\)>");} {re_bsearch("^\\CReply-To: *\\([^ ]+\\) *");} {re_bsearch("^\\CFrom:.*<\\(.+\\)>");} {re_bsearch("^\\CFrom: *\\([^ ]+\\) *");} {re_bsearch("^\\cFrom +\\([^ ]+\\) *");} ) { from = rmail_complex_get_from(from); } Modified some of the array code to use handles to arrays instead of actual arrays. This adds alot more protection for the use of arrays. The downside is that there is a limit on the number of active arrays. This limit has been set to a default value ot 256. An ``active'' array is an array that has been created but not freed. Fixed a parse error that occurred when an `if' statement imediately follow the `:' in a switch statement. putenv intrinsic added. EXIT_BLOCK: if an exit block is declared, it is called just before the function returns to its caller. It is now possible to perform assignments in variable declaration statements, e.g., variable i = 0, imax = 10, n = strlen (name); Condition compilation of S-Lang source possible. See .sl files in the jed distribution. A bug which prevent assignment to a global C floating point variable was fixed. Changes to `calc': `apropos' function added to calc.sl. For example, `apropos("str")' creates a list of all intrinsic functions that contain the substring "str" (strcmp, strcat, etc...) Command line arguments are now loaded as S-Lang source files. This makes it possible to create a Unix executable such as: #! /usr/local/bin/calc define hello_world () { print ("hello world"); } loop (10) hello_world (); quit (); }}}
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