<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><title>History of Ghostscript versions 1.n</title><!-- $Id: History1.htm,v 1.39 2005/10/20 19:46:23 ray Exp $ --><!-- Originally: history1.txt --><!--	WARNING: do not use Pete Kaiser's emacs function "gs-toc" alone to	re-create the table of contents here, because it will replace the	hand-edited TOC subheads with a separate subhead for each H2 in	the body of the file.  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For morerecent changes, see the the other history documents and, for the latestversions, the news: <blockquote><a href="News.htm">News</a><br><a href="History4.htm">History of Ghostscript versions 4.n</a><br><a href="History3.htm">History of Ghostscript versions 3.n</a><br><a href="History2.htm">History of Ghostscript versions 2.n</a><br>History of Ghostscript versions 1.n (this document)<br></blockquote> <p>For other information, see the <a href="Readme.htm">Ghostscriptoverview</a>. <!-- [1.3 end hint] ======================================================== --> <hr> <!-- [1.0 end visible header] ============================================== -->  <h2><a name="Version1.3"></a>Version 1.3 (6/20/89)</h2><pre>This release should have had a lot more things in it, but time pressureand the already long delay in getting it out made it necessary to push itout the door in an incomplete state (e.g., no testing on X systemswhatsoever). </pre><h3><a name="V1.3_Interpreter"></a>Interpreter</h3> <pre>Makes -d and -D equivalent on the command line.  Adds a new switch -s / -Sthat defines a name as a string rather than a token. Arranges things so that if -sLIB=_a_prefix_ is defined on the commandline, (filename) run will look for _a_prefix_filename before giving up iffilename isn't the name of an accessible file. Changes showpage from an operator to a procedure.  The definition ofshowpage in ghost.ps does a copypage, beeps the console, waits for theuser to type a character (normally a &lt;return&gt;, since line buffering isalways enabled), and then does an erasepage and an initgraphics. Adds a new initialization file, gdevs.ps, containing device-dependentparameters.  The default window size for X Windows is properly set to 612x 792, i.e., 8.5" x 11". Adds a new optional initialization file, statusd.ps, that provides dummydefinitions for the names found in statusdict on LaserWriters. Adds a new operator, getenv, to get information from the shellenvironment. Adds a new predefined operator, defaultdevicename, that returns either (X)or (EGA) according to how the interpreter was built. Adds a new type, devicetype, and new operators deviceparams, getscanlines,makedevice, makeimagedevice, and setdevice.  Changes currentdevice toreturn a device object rather than a set of parameters. Makes the scanner recognize reals with 'e' exponent notation, and handlereals with more than 9 digits. Fixes a bug that made names starting with digits read incorrectly. Fixes a bug in the exp operator that made it not pop its first argumentfrom the stack. Fixes a bug in the rand operator that made it return negative values abouthalf the time. Fixes a bug in equality comparison (eq, ne, and several other operators)that made unequal operator objects occasionally appear to be equal on DOSsystems. Fixes a bug in the bind operator that made it not work on packed arrays. Changes the internal representation of dictionaries so they can beexpanded or contracted dynamically.  Adds a new operator, setmaxlength, tochange the allocated size of a dictionary. Changes sstorei.h so that non-DOS compilers don't encounter the #pragmadirective used by Turbo C. Restores the display mode (on MS-DOS systems) when exiting. </pre><h3><a name="V1.3_Fonts"></a>Fonts</h3> <pre>Makes undefined characters in the standard font display as tilde ratherthan blank (or causing an error).  Unmapped character codes (those mappedto .notdef in the encoding) still display as nothing, per the PostScriptmanual. </pre><h3><a name="V1.3_Library"></a>Library</h3> <pre>Adds a new header file, gxbitmap.h, with some new documentation describingthe internal storage format for bitmaps. Makes numerous internal changes in the character / font cache, affectingmany of the routines in gxcache.c. Fixes a bug in gz_draw_line / gz_fill_trapezoid that made nearlyhorizontal lines display wrong. Fixes a bug in gs_scale that made scaling not work if the coordinatesystem was rotated or skewed. Extends the font cache so it will handle characters rotated by multiplesof 90 degrees. Changes the second argument of gx_path_bbox and gx_path_is_rectangle to bea gs_fixed_rect * rather than a fixed [4]. Changes gs_matrix_rotate so it handles multiples of 90 degrees as aspecial case. Changes the definition of the gx_device structure to accommodate the newdevice operators, and adds corresponding library calls. Changes the type for a device color index from int to gx_color_index(equivalent to unsigned long).  ***NOTE***: this affects existing clientsand drivers in a non-trivial way on MS-DOS systems. Changes gs_malloc and gs_free to take a client name string as an argument. </pre><h3><a name="V1.3_Usage_procedures"></a>Usage procedures</h3> <pre>Changes the compilation rules for Unix systems to not use the -o and -ccompiler flags together, to be compatible with more versions of cc. Changes the gcc makefile to use $(GCC) rather than gcc as the compilername. Moves the -1 flag for the MS-DOS compiler from the cc*.bat files to themakefile. Changes CCDEBUG to CCFLAGS, and adds ASMFLAGS, in DOS makefile. Adds -DFOR80386 and /DFOR80386 to enable use of 80386 instructions inassembly code on DOS systems. Merges the DEBUG and gs_DEBUG switches.  There is now only a single DEBUGswitch that affects both the interpreter and the library. Adds a new compilation switch, -DNOPRIVATE, that makes private (static)variables and procedures public for debugging and profiling (only neededon DOS systems). Adds the DOS executable (gs.exe and gs.map) to the distribution fileset. Adds new platform-specific code files, gp-*.c, for a few things likereading the clock. Adds a new documentation file, drivers.doc, that describes the interfacebetween Ghostscript and device drivers. </pre> <hr> <h2><a name="Version1.2"></a>Version 1.2 (2/22/89)</h2> <h3><a name="V1.2_Interpreter"></a>Interpreter</h3> <pre>Adds the new facilities in version 25 of PostScript: //name for immediatelookup, packed arrays (setpacking, currentpacking, packedarray operators),and new font cache parameters (setcacheparams, currentcacheparamsoperators). Adds new operators (setfileposition, currentfileposition) for randomaccess to files. Extends readhexstring to take either a string or a file, just like token. Fixes a bug that caused the 'for' operator (and a couple of others) torandomly smash memory locations on PC platforms. </pre><h3><a name="V1.2_Library"></a>Library</h3> <pre>Renames the init_device driver procedure as open_device, and adds acorresponding close_device. Adds new procedures to read and set the cache limit values (implementingthe currentcacheparams and setcacheparams operators). </pre><h3><a name="V1.2_Usage_procedures"></a>Usage procedures</h3> <pre>Changes the name of the Unix makefile to ux-cc-x.mak, and adds a new Unixmakefile, ux-gcc-x.mak, for using gcc instead of cc.  (The latter doesn'tactually work yet.) Changes the name of the single built-in font from uglyfont.cp tougly10.cp. </pre> <hr> <h2><a name="Version1.1"></a>Version 1.1 (2/12/89)</h2> <h3><a name="V1.1_Interpreter"></a>Interpreter</h3> <pre>Makes the scanner treat ^Z (ASCII code 26) as whitespace: it erroneouslytreated ^R (ASCII code 22, or octal 26) as whitespace. Makes the token and readline operators, and the syntax for comments,recognize \r (code 13), \n (code 10), and \r\n as equivalent end-of-lineindicators.  The token and readline operators will skip over any of thesesequences at the end of a token or line respectively, and a comment willread through any of these sequences.  The other file operators (read,write, readstring, writestring) do nothing special with these characters. Changes the debug switch name from -D to -Z.  Adds a -D switch fordefining names in systemdict from the command line.  Defines -DDEBUG forprinting out debugging information during initialization, and -DNODISPLAYfor suppressing display output. Corrects a bug that prevented the error machinery from working -- inversion 1.0, errors always dumped the stacks and aborted interpretation. Corrects a bug that made eq and ne not work for strings. Makes the atan (arctangent) operator normalize its results according tothe PostScript convention. Makes the div operator check for zero divisor. Makes unimplemented operators (resetfile, echo, save, restore, strokepath,reversepath) truly undefined. Makes the interactive loop exit gracefully on end-of-file: in version 1.0this caused an infinite loop. Implements the status operator. Corrects a bug that made the 'for' operator deliver garbage values if oneor more of the operands (start, increment, end) was a real. Corrects a bug that made the arc and arcn operators not pop their operandsfrom the stack. Corrects a bug that made the kshow operator crash the interpreter. Corrects a bug that made the print operator fail on machines that don'tpass structure arguments by simply pushing the contents of the structure. Adds a new operator, imagecharpath, to convert images toaddcharpath-compatible outlines. Changes alloc and alloc_free to use char * rather than byte *, andalloc_free to return void rather than int, making them compatible with thelibrary's expectations and with malloc/free. Explicitly casts all expressions of the form (ptr1 - ptr2) used asprocedure arguments to unsigned, to handle an incompatibility betweenTurbo C versions 1.5 and 2.0. Changes some of the internal conventions for operators: operators thatpush on the operand stack must check for overflow explicitly, andoperators that modify the execution stack must return a special code.(See oper.h for details.) </pre><h3><a name="V1.1_Initialization"></a>Initialization (ghost.ps, gfonts.ps)</h3> <pre>Modifies ghost.ps and gfonts.ps so they print debugging information onlyif the name DEBUG is defined.  (Presumably the user will set this from thecommand line with -DDEBUG.) Changes ghost.ps so it initializes the nominal screen size to 640 x 350 onMS-DOS systems as before, but to 612 x 792 on Unix systems, which is an8.5" x 11" page at 72 pixels per inch. </pre><h3><a name="V1.1_Library"></a>Library</h3> <pre>Corrects a bug that made the fill and eofill operators (gs_fill andgs_eofill) not perform a newpath afterward. Corrects the bug that made thin, nearly horizontal lines display wrong (asa series of disconnected dots) in the MS-DOS implementation. Fixes a bug in the EGA driver that often made it fill rectangular regionswith black around information being displayed in white. Completely changes the internal representation of outline fonts, andchanges btoi.ps (a Ghostscript language program for converting bitmaps tooutlines) to use a new library call, gs_imagecharpath. Changes the extension for outline font files from .gf to .cp. Adds a new debugging switch, q, that traces all rectangle fill operations. Adds a new debugging switch, v, that traces all device-level output calls. Explicitly casts pointer differences passed as procedure arguments, as inthe interpreter. Makes stringwidth work if there is no current point.  In version 1.0, thisgave a nocurrentpoint error. </pre><h3><a name="V1.1_Usage_procedures"></a>Usage procedures</h3> <pre>Changes the name of the 'read me' file from READ.ME to README. Removes a bogus line (invoking the 'mcopy' utility) from the makefile. Splits up the makefile into a generic part (ghost.mak) andplatform-specific parts (dos-ega.mak, unix-x11.mak).  The latter are whatis actually executed. Puts the definitions of the DEBUG and gs_DEBUG compilation flags into themakefile instead of in ghost.h and gx.h respectively. Changes the names of the documentation files to be a little less cryptic.Changes all the file names to lower-case in the documentation.  Addsinstallation information to make.doc. Changes all function definitions (but not prototype declarations) to ANSIsyntax, and adds a preprocessing step (ansi2knr) to convert them to K&amp;Rsyntax on Unix systems. Changes the normal MS-DOS link configuration to not assume the presence ofan 80x87 coprocessor, and describes how to increase performance if acoprocessor is present. Changes the names of all the interpreter .c files, except stream.c, tobegin with 'i'. </pre> <hr> <h2><a name="Version1.0"></a>Version 1.0 (8/11/88)</h2> <pre>First version released to the public.</pre> <!-- [3.0 begin visible trailer] =========================================== --><hr> <p><small>Copyright &copy; 1996, 1997, 1998 Aladdin Enterprises.All rights reserved.</small> <p>This software is provided AS-IS with no warranty, either express or<p>implied.<p><p>This software is distributed under license and may not be copied,<p>modified or distributed except as expressly authorized under the terms<p>of the license contained in the file LICENSE in this distribution.<p><p>For more information about licensing, please refer to<p>http://www.ghostscript.com/licensing/. For information on<p>commercial licensing, go to http://www.artifex.com/licensing/ or<p>contact Artifex Software, Inc., 101 Lucas Valley Road #110,<p>San Rafael, CA  94903, U.S.A., +1(415)492-9861. <p><small>Ghostscript version 8.53, 20 October 2005 <!-- [3.0 end visible trailer] ============================================= --> </body></html>