Brings documentation up to date for the release.

git-svn-id: http://svn.ghostscript.com/ghostscript/trunk@264 a1074d23-0009-0410-80fe-cf8c14f379e6
author: L Peter Deutsch <lpd@ghostscript.com> 2000-04-07 05:33:20 +0000
committer: L Peter Deutsch <lpd@ghostscript.com> 2000-04-07 05:33:20 +0000
commit: 808fbd59d49b66dff57e20e4f7a50bebd17ee63a (patch)
tree: 26b7c57ca7ee44165f085e490f257b14ed3ff539
parent: 64bbbf83ceab1ac14ebbb33bd52063575524da81 (diff)
download: ghostpdl-808fbd59d49b66dff57e20e4f7a50bebd17ee63a.tar.gz
3 files changed, 1330 insertions, 22 deletions
diff --git a/gs/doc/Changes.htm b/gs/doc/Changes.htm
index b5a42bed4..0cbfe9cd4 100644
--- a/gs/doc/Changes.htm
+++ b/gs/doc/Changes.htm
@@ -1,5 +1,5 @@
 <html><head>
-<title>Ghostscript 6.20 change history as of 2000-03-30 00:05:44</title>
+<title>Ghostscript 6.20 change history as of 2000-04-06 22:26:58</title>
 </head><body>
 
 <blockquote><ul>
@@ -11,8 +11,7 @@
     <a href="#6.20 Interpreter (PDF)">Interpreter (PDF)</a>,
     <a href="#6.20 Interpreter">Interpreter</a>,
     <a href="#6.20 Streams">Streams</a>,
-    <a href="#6.20 Library">Library</a>,
-    <a href="#6.20 ???Other???">???Other???</a>
+    <a href="#6.20 Library">Library</a>
 </ul>
 </ul></blockquote>
 
@@ -26,6 +25,15 @@ rather than simply setting the procedure to gs_identity_transfer.
 (doc/News.htm [1.13]: 2000/03/19 17:14:47 lpd)
 	- In PDF files, the page CropBox was not being used to clip the
 output. (doc/News.htm [1.18]: 2000/03/21 23:08:32 lpd)
+	- Fixes several problems in resourceforall and resource loading: the
+operands of resourceforall were restored even in the case of an error in the
+client's procedure; the name Instances had special meaning for some Adobe
+code; resourceforall caused an invalidaccess error if an operand was in
+local VM but the current VM was global; loading a resource from a file could
+cause a typecheck error if the file left values on the operand stack.
+(doc/News.htm [1.25]: 2000/04/04 22:26:02 lpd)
+	- The location of the lists of supported and unsupported drivers was
+incorrect. (doc/Bug-info.htm [1.2]: 2000/04/07 03:01:52 lpd)
 
 Undoes an accidental RCS ID substitution in what was supposed to be literal
 text. (doc/Htmstyle.htm [1.2]: 2000/03/18 22:29:03 lpd)
@@ -162,6 +170,37 @@ Changes the procs structure of gs_type1_data to an in-line structure rather
 than a pointer to a const structure. (Needed for moving CIDFontType 0
 support into C.) (doc/News.htm [1.22]: 2000/03/29 22:10:31 lpd)
 
+Updates the change log with recent changes. (doc/Changes.htm [1.8]:
+2000/03/30 07:59:39 lpd)
+
+Creates a real list of projects on which help would be appreciated.
+(doc/Projects.htm [1.2]: 2000/04/01 00:43:11 lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files.
+(doc/News.htm [1.23]: 2000/04/02 07:38:46 lpd)
+
+Updates the documentation on preparing releases to reflect the addition of
+the toolbin directory. (doc/Release.htm [1.7]: 2000/04/02 18:56:58 lpd)
+
+Implements the AutoRotatePages distiller parameter. (doc/Ps2pdf.htm [1.5]:
+2000/04/03 02:54:41 lpd)
+
+Updates the problem reporting procedure to use SourceForge; separates the
+description of the procedure from the reporting form.
+(doc/Bug-form.htm [1.4], doc/Bug-info.htm [1.1], doc/New-user.htm [1.4],
+doc/News.htm [1.24], doc/Readme.htm [1.4]: 2000/04/04 04:14:02 lpd)
+
+Updates release dates and version numbers. (doc/Bug-form.htm [1.5],
+doc/Bug-info.htm [1.3], doc/Htmstyle.htm [1.3], doc/Make.htm [1.9],
+doc/New-user.htm [1.5], doc/Projects.htm [1.3], doc/Ps2pdf.htm [1.6],
+doc/Psfiles.htm [1.3], doc/Readme.htm [1.5], man/ps2pdf.1 [1.4],
+man/ps2ps.1 [1.4]: 2000/04/07 05:21:45 lpd)
+
+Removes redundant material, and the www.aladdin.com distribution point, from
+the release procedure documentation. (doc/Release.htm [1.8]: 2000/04/07
+05:24:29 lpd)
+
 </pre><h2><a name="6.20 Procedures"></a>Procedures</h2><pre>
 
 Fixes problems:
@@ -169,6 +208,12 @@ Fixes problems:
 2000/03/19 02:00:09 lpd)
 	- The referenced libpng version hadn't been updated to 1.0.5.
 (openvms.mmk [1.3]: 2000/03/20 16:38:46 lpd)
+	- The MSVC++ 6 compiler no longer recognizes the /FPi87 switch.
+(msvccmd.mak [1.2]: 2000/03/31 05:06:53 lpd)
+	- MSVC versions before 5, not before 6, recognize /FPi87.
+(msvccmd.mak [1.3]: 2000/03/31 05:50:33 lpd)
+	- Removes some occurrences of $,I,d,: that shouldn't be substituted.
+(toolbin/pre [1.2]: 2000/04/07 05:20:35 lpd)
 
 Increments the version number to 6.20, in anticipation of the next release.
 (We do this at the beginning of the development for a release, not the end.)
@@ -243,12 +288,51 @@ Changes the default value of FPU_TYPE in all Windows and OS/2 makefiles from
 (msvc32.mak [1.3], msvclib.mak [1.3], os2.mak [1.4], watcw32.mak [1.3]:
 2000/03/28 17:03:48 lpd)
 
+Updates the change log with recent changes. (version.mak [1.10]: 2000/03/30
+07:59:39 lpd)
+
+Cleans up some dependencies missed at the last checkin. (devs.mak [1.7],
+int.mak [1.13]: 2000/03/31 05:03:30 lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files. (int.mak [1.14]:
+2000/04/02 07:38:46 lpd)
+
+Adds a variety of tools used to build and distribute Ghostscript releases.
+The only documentation is comments in the files themselves, and there isn't
+much of it. All aspects of these tools are subject to change without notice.
+(toolbin/3way.tcl [1.1], toolbin/cvs2hist.py [1.1],
+toolbin/errlist.tcl [1.1], toolbin/gsmake.tcl [1.1],
+toolbin/headers.tcl [1.1], toolbin/leaks.tcl [1.1],
+toolbin/makeset.tcl [1.1], toolbin/package.tcl [1.1], toolbin/pre [1.1],
+toolbin/pre.chk [1.1], toolbin/precheck.tcl [1.1], toolbin/smoke.ps [1.1],
+toolbin/suite.tcl [1.1], toolbin/tmake.tcl [1.1]: 2000/04/02 18:44:27 lpd)
+
+Moves gsindent from src to toolbin. (toolbin/gsindent [1.1]: 2000/04/02
+18:56:25 lpd)
+
+Adds an #include required by the Watcom compiler. (devs.mak [1.8]:
+2000/04/05 19:51:54 lpd)
+
+Adds a missing dependency. (lib.mak [1.8]: 2000/04/07 03:00:56 lpd)
+
+Updates a few dependencies for the release. (int.mak [1.15]: 2000/04/07
+05:23:12 lpd)
+
+Updates the build date for the release. (version.mak [1.11]: 2000/04/07
+05:25:18 lpd)
+
+Adds .cvsignore files, to prevent bogus warnings on cvs update.
+(.cvsignore [1.1], src/.cvsignore [1.1]: 2000/04/05 19:46:04 lpd)
+
 </pre><h2><a name="6.20 Utilities"></a>Utilities</h2><pre>
 
 Fixes problems:
 	- A couple of places in the Windows code didn't correctly handle
 Ghostscript version numbers of the form #.0#. (gp_wgetv.c [1.2]: 2000/03/22
 21:45:03 lpd)
+	- Replaces a final exit() with a return, to avoid a compiler
+warning. (genconf.c [1.2]: 2000/04/05 19:53:27 lpd)
 
 Makes geninit remove whitespace adjacent to hex and base-85 string literals.
 (geninit.c [1.2]: 2000/03/18 22:51:24 lpd)
@@ -269,6 +353,11 @@ Splits off the ReusableStreamDecode filter as a separate module, since
 CIDFontType 0 fonts will use it even in LanguageLevels below 3.
 (zfreuse.c [1.2]: 2000/03/21 21:34:57 lpd)
 
+Adds a variety of tools used to build and distribute Ghostscript releases.
+The only documentation is comments in the files themselves, and there isn't
+much of it. All aspects of these tools are subject to change without notice.
+(gsindent [1.2]: 2000/04/02 18:44:27 lpd)
+
 </pre><h2><a name="6.20 Drivers"></a>Drivers</h2><pre>
 
 Fixes problems:
@@ -289,6 +378,12 @@ N-up printing not work properly. (gdevps.c [1.4]: 2000/03/28 00:52:46 lpd)
 	- The PCL XL 2.0 value for sRGB color space was wrong, and the
 attribute for writing mode was missing. (gdevpxat.h [1.2], gdevpxen.h [1.2]:
 2000/03/29 18:19:44 lpd)
+	- When printing on monochrome LaserJet/DeskJet printers, the driver
+didn't set the number of copies to 1; on the LJ 4si, this sometimes caused
+double printing. (gdevdjet.c [1.2]: 2000/04/03 14:36:12 lpd)
+	- Updates clients for the change in the last argument of
+cff_string_index from uint * to int *. (gdevpsf2.c [1.4]: 2000/04/05
+19:55:29 lpd)
 
 Adds parsing for the remaining Acrobat Distiller 4 parameters. Implements
 the LockDistillerParams, xxxDownsampleThreshold, xxxImageDict, and
@@ -327,6 +422,16 @@ than a pointer to a const structure. (Needed for moving CIDFontType 0
 support into C.) (gdevpsf1.c [1.2], gdevpsf2.c [1.2], gdevpsfx.c [1.2]:
 2000/03/29 22:10:31 lpd)
 
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files.
+(gdevpsf2.c [1.3], gdevpsfu.c [1.2]: 2000/04/02 07:38:45 lpd)
+
+Slightly simplifies the output of the psmono and psgray drivers.
+(gdevpsim.c [1.2]: 2000/04/02 19:57:37 lpd)
+
+Adds an #include required by the Watcom compiler. (gdevpsf1.c [1.3]:
+2000/04/05 19:51:54 lpd)
+
 </pre><h2><a name="6.20 PDF writer"></a>PDF writer</h2><pre>
 
 Fixes problems:
@@ -348,6 +453,9 @@ lpd)
 stream. (gdevpdfm.c [1.4]: 2000/03/24 06:18:39 lpd)
 	- The name of the EndPage Distiller parameter collided with the
 EndPage page device parameter. (gdevpdfp.c [1.4]: 2000/03/28 07:45:25 lpd)
+	- If two embedded fonts had the same base font, the PDF file could
+wind up with an invalid entry in the xref table. (gdevpdft.c [1.4]:
+2000/04/01 01:18:32 lpd)
 
 Adds parsing for the remaining Acrobat Distiller 4 parameters. Implements
 the LockDistillerParams, xxxDownsampleThreshold, xxxImageDict, and
@@ -405,6 +513,10 @@ Changes the initial values of the "job control" parameters to match Acrobat
 Distiller 4. (gdevpdf.c [1.7], gdevpdfp.c [1.6], gdevpdfx.h [1.6]:
 2000/03/28 07:57:14 lpd)
 
+Implements the AutoRotatePages distiller parameter. (gdevpdf.c [1.8],
+gdevpdft.c [1.5], gdevpdfu.c [1.5], gdevpdfx.h [1.7]: 2000/04/03 02:54:41
+lpd)
+
 </pre><h2><a name="6.20 Interpreter (PDF)"></a>Interpreter (PDF)</h2><pre>
 
 Fixes problems:
@@ -428,6 +540,14 @@ worse, because the code didn't distinguish between resolving to a PostScript
 function (for shadings) and resolving to a PostScript procedure (for
 halftones, BG/UCR, alternate color space mapping, etc.)
 (lib/pdf_draw.ps [1.7]: 2000/03/23 18:31:46 lpd)
+	- Text with a Pattern color scaled the pattern according to the text
+matrix, not the default matrix of the marking context.
+(lib/pdf_base.ps [1.6], lib/pdf_main.ps [1.5], lib/pdf_ops.ps [1.4]:
+2000/03/30 18:01:58 lpd)
+	- Resolving a Shading didn't create a reusable stream for the
+shading data; since the data was then read at unpredictable times, the
+shading or other constructs in the PDF file could read incorrect data.
+(lib/pdf_draw.ps [1.8]: 2000/04/03 06:01:25 lpd)
 
 Adds a lforall procedure for the PDF linearizer. (lib/pdf_base.ps [1.3]:
 2000/03/19 01:50:05 lpd)
@@ -503,6 +623,41 @@ zfont42.c [1.3]: 2000/03/28 18:20:39 lpd)
 with definefont instead of /CIDFont defineresource, caused an invalidfont
 error or a crash. (lib/gs_cidfn.ps [1.9], lib/gs_fonts.ps [1.4]: 2000/03/28
 18:21:50 lpd)
+	- The new C BuildGlyph code for CIDFontType 0 fonts didn't handle
+GlyphDirectory or Type 2 CharStrings correctly. (lib/gs_cidfn.ps [1.12],
+zfcid.c [1.8]: 2000/03/31 23:21:57 lpd)
+	- The internaldict "operator" was allocated in local VM, preventing
+it from being bound into procedures allocated in global VM.
+(lib/gs_init.ps [1.6]: 2000/04/04 22:16:02 lpd)
+	- If there was a CIDInit ProcSet defined in the filesystem, the code
+for initializing the built-in CIDInit ProcSet became confused.
+(lib/gs_cidfn.ps [1.13]: 2000/04/04 22:17:33 lpd)
+	- Fixes several problems in resourceforall and resource loading: the
+operands of resourceforall were restored even in the case of an error in the
+client's procedure; the name Instances had special meaning for some Adobe
+code; resourceforall caused an invalidaccess error if an operand was in
+local VM but the current VM was global; loading a resource from a file could
+cause a typecheck error if the file left values on the operand stack.
+(interp.c [1.3], lib/gs_ccfnt.ps [1.2], lib/gs_res.ps [1.3]: 2000/04/04
+22:26:02 lpd)
+	- resourceforall didn't enumerate external (loadable) instances, and
+would enumerate an instance twice if it had both a local and a global
+definition. (lib/gs_res.ps [1.4]: 2000/04/05 21:07:02 lpd)
+	- The implementation of resourcestatus wasn't compatible with some
+badly written code in an Adobe font downloader that assumes that the
+implementation of resourcestatus in Generic and Font is the same.
+(lib/gs_res.ps [1.5]: 2000/04/05 21:20:07 lpd)
+	- The just-checked-in fixed for resourceforall didn't work properly
+for the IdiomSet category. (They probably failed for other categories that
+had no instances, but we didn't check this.) (lib/gs_res.ps [1.6]:
+2000/04/05 21:51:43 lpd)
+	- Some Adobe font downloading code assumed that loading a resource
+file would never leave extra values on the stack; our implementation didn't
+ensure this (by popping them if needed). (lib/gs_res.ps [1.8]: 2000/04/06
+04:50:28 lpd)
+	- If an alphabetic font defined and used a .notdef character,
+pdfwrite always converted it to a bitmap. (lib/gs_lgo_e.ps [1.2]: 2000/04/07
+02:48:23 lpd)
 
 Provides a gs_atan2_degrees procedure to parallel sin and cos.
 (zmath.c [1.2]: 2000/03/18 23:10:39 lpd)
@@ -576,8 +731,8 @@ that have a GlyphDirectory (not documented in the PLRM, but clearly
 correct). Implements Adobe 3011 features: integer and dictionary CIDMaps,
 and the MetricsCount entry, in CIDFontType 2 fonts (but only in the C code,
 which isn't hooked in yet, not in the PostScript code in gs_cidfn.ps.)
-(icid.h [1.1], ifont.h [1.2], zcid.c [1.2], zfcid.c [1.1], zfcmap.c [1.3],
-zfont42.c [1.2]: 2000/03/20 19:53:06 lpd)
+(icid.h [1.1], ifont.h [1.2], ifont42.h [1.1], zcid.c [1.2], zfcid.c [1.1],
+zfcmap.c [1.3], zfont42.c [1.2]: 2000/03/20 19:53:06 lpd)
 
 Hooks the new CIDMap code into the BuildGlyph procedure for CIDFontType 2
 fonts. (Contrary to a previous log comment, MetricsCount is already hooked
@@ -629,6 +784,39 @@ Changes the procs structure of gs_type1_data to an in-line structure rather
 than a pointer to a const structure. (Needed for moving CIDFontType 0
 support into C.) (zfont1.c [1.3]: 2000/03/29 22:10:31 lpd)
 
+Finishes moving support for CIDFontType 0 fonts from PostScript to C.
+(ifont.h [1.3], ifont42.h [1.2], lib/gs_cidfn.ps [1.10], zfcid.c [1.7],
+zfont42.c [1.4]: 2000/03/31 04:55:18 lpd)
+
+Allows dictionaries as the value of CIDMap resources. (Also removes an
+unrelated obsolete comment.) (lib/gs_cidfn.ps [1.11]: 2000/03/31 05:11:30
+lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files. (ichar1.h [1.2],
+ifcid.h [1.1], zchar1.c [1.2], zfcid.c [1.9], zfcid0.c [1.1],
+zfcid1.c [1.1], zfont1.c [1.4]: 2000/04/02 07:38:46 lpd)
+
+Makes the .writefont9 operator (used only for testing) available in both
+DEBUG and PROFILE configurations. (zfcid0.c [1.2]: 2000/04/03 02:37:55 lpd)
+
+Extends .forceput to handle arrays as well as dictionaries, required to fix
+a bug with internaldict. (zdict.c [1.2], zgeneric.c [1.2]: 2000/04/04
+22:13:23 lpd)
+
+Works around an Adobe code assumption that the default FindResource
+procedure does *not* call the ResourceStatus procedure if the requested
+instance is already defined in VM. (lib/gs_res.ps [1.7]: 2000/04/05 23:31:54
+lpd)
+
+Implements the framework for superexec (but none of the actual access check
+bypasses). (icontext.c [1.2], icstate.h [1.2], zcontrol.c [1.2]: 2000/04/06
+04:40:06 lpd)
+
+Extends the undocumented CCRun procedure to take an additional argument, a
+Private dictionary, required by some Adobe font downloading code.
+(lib/gs_type1.ps [1.3]: 2000/04/06 05:25:10 lpd)
+
 </pre><h2><a name="6.20 Streams"></a>Streams</h2><pre>
 
 Fixes problems:
@@ -829,15 +1017,11 @@ than a pointer to a const structure. (Needed for moving CIDFontType 0
 support into C.) (gstype1.c [1.4], gstype2.c [1.3], gxfont1.h [1.3],
 gxtype1.c [1.3]: 2000/03/29 22:10:31 lpd)
 
-</pre><h2><a name="6.20 ???Other???"></a>???Other???</h2><pre>
+Finishes moving support for CIDFontType 0 fonts from PostScript to C.
+(gxfcid.h [1.3]: 2000/03/31 04:55:18 lpd)
 
-Starts to move support for CIDFontType 0 and 2 into C code, needed by the
-PDF writer for handling CID-keyed fonts. Implements GlyphDirectory for
-CIDFonts. Makes GDBytes and CIDMapOffset optional for CIDFontType 0 fonts
-that have a GlyphDirectory (not documented in the PLRM, but clearly
-correct). Implements Adobe 3011 features: integer and dictionary CIDMaps,
-and the MetricsCount entry, in CIDFontType 2 fonts (but only in the C code,
-which isn't hooked in yet, not in the PostScript code in gs_cidfn.ps.)
-(ifont42.h [1.1]: 2000/03/20 19:53:06 lpd)
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files. (gsfcid.c [1.2],
+gxfcid.h [1.4]: 2000/04/02 07:38:46 lpd)
 
 </pre></body></html>
diff --git a/gs/doc/History6.htm b/gs/doc/History6.htm
index 3f58cffca..e02eefeda 100644
--- a/gs/doc/History6.htm
+++ b/gs/doc/History6.htm
@@ -27,6 +27,19 @@
 <h2>Table of contents</h2>
 
 <blockquote><ul>
+<li><a href="#Version6.20">Version 6.20 (2000-04-06)</a>
+<ul>
+<li><a href="#6.20_Incompatible_changes">Incompatible changes</a>,
+    <a href="#6.20 Documentation">Documentation</a>,
+    <a href="#6.20 Procedures">Procedures</a>,
+    <a href="#6.20 Utilities">Utilities</a>,
+    <a href="#6.20 Drivers">Drivers</a>,
+    <a href="#6.20 PDF writer">PDF writer</a>,
+    <a href="#6.20 Interpreter (PDF)">Interpreter (PDF)</a>,
+    <a href="#6.20 Interpreter">Interpreter</a>,
+    <a href="#6.20 Streams">Streams</a>,
+    <a href="#6.20 Library">Library</a>
+</ul>
 <li>(Versions 6.02 - 6.19 deliberately omitted.)
 <li><a href="#Version6.01">Version 6.01 (2000-03-17)</a>
 <ul>
@@ -84,7 +97,7 @@ overview</a>.
 
 <!-- [2.0 begin contents] ================================================== -->
 
-<pre>
+<p>
 Within each release, news appears in the following order: Incompatible
 changes, Documentation, Procedures, Utilities, Drivers, Platforms, Fonts,
 PDF writer (included under Drivers through fileset 5.88), Interpreter,
@@ -94,6 +107,1097 @@ release.
 
 <hr>
 
+<h1><a name="Version6.20"></a>Version 6.20 (2000-04-06)</h1>
+
+<p>
+This fileset includes the first steps towards bringing the pdfwrite driver
+closer to matching Acrobat Distiller 4.  Highlights:
+
+<ul>
+
+<li> Reimplementation of CIDFontType 0 support in C rather than PostScript;
+
+<li> Parsing (but not functional implementation) of nearly all the Acrobat
+Distiller 4 parameters;
+
+<li> Implementation of AutoRotatePages and DCTEncode filtering in the PDF
+writer;
+
+<li> A PDF linearizer ("optimizer").
+
+</ul>
+
+<p>
+All problems registered on SourceForge numbered 103963 or lower are closed,
+except for the following: 101549, 101814, 101829, 101905, 101955, 102046,
+102047, 102132, 102146, 102735, 102901, 103016, 103528, 103963.
+
+<pre>
+
+<h2><a name="6.20_Incompatible_changes"></a>Incompatible changes</h2>
+
+(Procedures)
+	- The default value of FPU_TYPE in all Windows and OS/2 makefiles
+is now 387 rather than 0.
+	- The process for reporting problems has changed significantly.
+(PDF writer)
+	- The Cos procedures no longer take the device as an argument,
+except for object-creating procedures, which now take the device rather
+than an allocator.
+	- The is_object member of Cos values is replaced by value_type.
+Clients must use COS_VALUE_IS_OBJECT() to test whether a value is an object
+reference.
+	- The Cos procedures that take C strings no longer copy the string.
+	- The argument of cos_write_object is no longer const.
+(Drivers)
+	- The default BufferSpace for printer drivers is now 4 Mb.
+	- Device halftone order implementations must now provide a new
+bit_index procedure.
+	- The image argument for psdf_setup_image_filters is changed from
+gs_image_t to gs_pixel_image_t.
+	- The font-related psdf_ procedures are renamed psf_.
+(Streams)
+	- The interface to the [T]BCP filters is now in a separate file,
+sbcp.h.
+(PDF interpreter)
+	- The internal beginpage procedure is renamed dictbeginpage, and
+now takes a dictionary argument.
+(Interpreter)
+	- The argument list for the internal build_gs_TrueType_font
+procedure has changed.
+	- The zcharstring_glyph_outline procedure is renamed
+zchar1_glyph_outline.
+	- The Instances dictionary of resources is renamed .Instances.
+(Library)
+	- ImageType 4 images now give an error if a MaskColor value is out
+of the range of possible sample values.
+	- The definition of gs_param_key_t, the key type returned by
+parameter list enumeration, is changed.
+	- Implementors of parameter lists must now call gs_param_list_init
+to initialize the common members.
+	- st_indexed_map is now private.  Clients allocating instances of
+this structure must now call alloc_indexed_map.
+	- Setting a transfer map as the identity mapping now requires
+calling gx_set_identity_transfer.
+	- gs_cid_system_info is renamed gs_cid_system_info_t.
+	- The get_outline procedure of a Type 42 or Type 11 (CIDFontType 0)
+font now returns 1 if the string was newly allocated and can be freed by the
+client.
+	- The procs member of gs_type1_data is now an in-line structure
+rather than a pointer to a const structure.
+
+
+<h2><a name="6.20 Documentation"></a>Documentation</h2><pre>
+
+Fixes problems:
+	- If log2_transfer_map_size > 8, identity transfer functions
+returned garbage. The fix requires that if a client wants to set a transfer
+function to the identity mapping, it must call gx_set_identity_transfer
+rather than simply setting the procedure to gs_identity_transfer.
+(doc/News.htm [1.13]: 2000/03/19 17:14:47 lpd)
+	- In PDF files, the page CropBox was not being used to clip the
+output. (doc/News.htm [1.18]: 2000/03/21 23:08:32 lpd)
+	- Fixes several problems in resourceforall and resource loading: the
+operands of resourceforall were restored even in the case of an error in the
+client's procedure; the name Instances had special meaning for some Adobe
+code; resourceforall caused an invalidaccess error if an operand was in
+local VM but the current VM was global; loading a resource from a file could
+cause a typecheck error if the file left values on the operand stack.
+(doc/News.htm [1.25]: 2000/04/04 22:26:02 lpd)
+	- The location of the lists of supported and unsupported drivers was
+incorrect. (doc/Bug-info.htm [1.2]: 2000/04/07 03:01:52 lpd)
+
+Undoes an accidental RCS ID substitution in what was supposed to be literal
+text. (doc/Htmstyle.htm [1.2]: 2000/03/18 22:29:03 lpd)
+
+Increments the version number to 6.20, in anticipation of the next release.
+(We do this at the beginning of the development for a release, not the end.)
+(doc/History6.htm [1.4], doc/News.htm [1.6]: 2000/03/19 00:27:22 lpd)
+
+Splits out the [T]BCP filter interface into a separate file.
+(doc/News.htm [1.7]: 2000/03/19 02:40:18 lpd)
+
+Documents the fact that ImageType 4 images now cause an error for
+out-of-range MaskColor values. (doc/News.htm [1.8]: 2000/03/19 04:32:09 lpd)
+
+Updates the change log with recent changes. (doc/Changes.htm [1.4]:
+2000/03/19 05:39:58 lpd)
+
+Adds a new document listing projects with which we are seeking help. Also
+makes the description of Changes.htm and News.htm more accurate.
+(doc/New-user.htm [1.2], doc/Projects.htm [1.1], doc/Readme.htm [1.3]:
+2000/03/19 06:07:15 lpd)
+
+Changes the default value of BufferSpace to 4 Mb. In desktop applications,
+this is a reasonable value that can substantially improve performance
+(especially for color printers); embedded applications will want to set
+BufferSpace themselves in any case. (doc/News.htm [1.9]: 2000/03/19 06:51:13
+lpd)
+
+Changes the key type returned by parameter list enumeration to include a
+persistence flag, makes C parameter lists support non-persistent keys, and
+upgrades GC descriptors so that parameter lists can be used non-transiently;
+updates implementors of parameter lists to call gs_param_list_init to
+initialize the common members, which is now required. (doc/News.htm [1.10]:
+2000/03/19 15:16:11 lpd)
+
+Documents the fact that drivers that device halftone order implementations
+must now provide the new bit_index procedure. (This should have been
+documented when bit_index was introduced!) (doc/News.htm [1.11]: 2000/03/19
+15:47:47 lpd)
+
+Makes st_indexed_map private. Clients must now use the constructor procedure
+alloc_indexed_map rather than allocating instances directly.
+(doc/News.htm [1.12]: 2000/03/19 16:37:28 lpd)
+
+Update the date and change log for the latest batches of checked-in changes.
+(doc/Changes.htm [1.5]: 2000/03/19 17:29:57 lpd)
+
+Adds a PDF linearizer ("optimizer"). This is a separate utility (not
+integrated with the pdfwrite driver), written in PostScript.
+(doc/Psfiles.htm [1.2]: 2000/03/20 04:31:22 lpd)
+
+Adds parsing for the remaining Acrobat Distiller 4 parameters. Implements
+the LockDistillerParams, xxxDownsampleThreshold, xxxImageDict, and
+xxxACSImageDict distiller parameters. Implements DCTEncode as an
+xxxImageFilter option (it used to cause a crash). Makes the
+AutoFilterxxxImages distiller parameters select JPEG encoding (with ACSDict)
+if the image has 8 bits per component and is not Indexed, and LZW/Flate
+otherwise: this still isn't right, but it's closer. Implementation changes:
+Changes the implementation of distiller parameter dictionaries from stream
+states to parameter lists; changes the test for masks in
+psdf_setup_image_filters, and changes the image argument from gs_image_t to
+gs_pixel_image_t. (doc/News.htm [1.14]: 2000/03/20 05:40:04 lpd)
+
+Moves font-writing support into a new module (gdevpsf*), changing the source
+file names. Adds the ability to write CFF fonts, with either Type 1 or Type
+2 CharStrings; unfortunately, Acrobat Reader appears not to accept CFF fonts
+with Type 1 CharStrings. Adds the ability to convert Type 1 CharStrings to
+Type 2, including optimizing sequences of Type 1 operators into a single
+Type 2 operator. Implements writing CIDFontType 0 CFF fonts (CIDFonts) [NOT
+TESTED]. Starts (just barely) to remove more unneeded information from
+embedded TrueType fonts. (doc/News.htm [1.15]: 2000/03/20 07:02:12 lpd)
+
+Updates the consolidated change log with today's changes.
+(doc/Changes.htm [1.6]: 2000/03/20 07:18:38 lpd)
+
+Starts to move support for CIDFontType 0 and 2 into C code, needed by the
+PDF writer for handling CID-keyed fonts. Implements GlyphDirectory for
+CIDFonts. Makes GDBytes and CIDMapOffset optional for CIDFontType 0 fonts
+that have a GlyphDirectory (not documented in the PLRM, but clearly
+correct). Implements Adobe 3011 features: integer and dictionary CIDMaps,
+and the MetricsCount entry, in CIDFontType 2 fonts (but only in the C code,
+which isn't hooked in yet, not in the PostScript code in gs_cidfn.ps.)
+(doc/News.htm [1.16]: 2000/03/20 19:53:06 lpd)
+
+Notes that the argument list for the internal build_gs_TrueType_font
+procedure has changed, as part of the CIDFont migration to C code.
+(doc/News.htm [1.17]: 2000/03/20 20:04:20 lpd)
+
+Adds invocation scripts and documentation for the PDF "optimizer".
+(man/pdfopt.1 [1.1]: 2000/03/21 17:01:33 lpd)
+
+Updates information about reporting problems when using Ghostview or GSview.
+(doc/Bug-form.htm [1.3], doc/New-user.htm [1.3]: 2000/03/22 22:13:49 lpd)
+
+Checks in the latest consolidated change log. (doc/Changes.htm [1.7]:
+2000/03/24 05:04:55 lpd)
+
+Substantially enhances the Cos object machinery. Interface: Adds a few more
+procedures, including a procedure to create a stream that writes directly
+into a Cos stream object, procedures for putting more kinds of values into
+arrays and dictionaries, and a param_list interface. Changes Cos objects to
+store a reference to the PDF device, and removes the device argument from
+all Cos procedures other than object creation. Replaces the Boolean
+is_object member of Cos values by a value_type enum: clients must now use
+COS_VALUE_IS_OBJECT() to test whether a value is an object reference. To
+reduce allocator overhead, makes the Cos procedures that take C strings no
+longer copy the string. Records whether each Cos object has been written
+into the output, so that in the future (but not in this batch of changes)
+resource definitions can be copied at the end of each page. Implementation:
+Moves more of the implementation of Cos objects to the .c file.
+(doc/News.htm [1.19]: 2000/03/24 06:12:52 lpd)
+
+Adds parsing for the remaining Acrobat Distiller 4 parameters, although most
+of them don't have any effect yet; brings documentation up to date.
+(doc/Ps2pdf.htm [1.3]: 2000/03/28 07:36:58 lpd)
+
+Implements LockDistillerParams; completes the StartPage/EndPage fix checked
+in just before. (doc/Ps2pdf.htm [1.4]: 2000/03/28 07:52:06 lpd)
+
+Changes the default value of FPU_TYPE in all Windows and OS/2 makefiles from
+0 to 387, since all current desktop CPUs include floating point hardware.
+(doc/News.htm [1.20]: 2000/03/28 17:03:48 lpd)
+
+Changes the get_outline / glyph_data procedure for getting encoded font
+outline data to return an indication of whether the outline data were just
+allocated and can be freed by the client. (This is a possibly
+non-backward-compatible change.) (doc/News.htm [1.21]: 2000/03/28 18:47:02
+lpd)
+
+Adds a note about bogus "ANSI aliasing" warnings from the DEC C compiler.
+(doc/Make.htm [1.8]: 2000/03/29 19:29:08 lpd)
+
+Changes the procs structure of gs_type1_data to an in-line structure rather
+than a pointer to a const structure. (Needed for moving CIDFontType 0
+support into C.) (doc/News.htm [1.22]: 2000/03/29 22:10:31 lpd)
+
+Updates the change log with recent changes. (doc/Changes.htm [1.8]:
+2000/03/30 07:59:39 lpd)
+
+Creates a real list of projects on which help would be appreciated.
+(doc/Projects.htm [1.2]: 2000/04/01 00:43:11 lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files.
+(doc/News.htm [1.23]: 2000/04/02 07:38:46 lpd)
+
+Updates the documentation on preparing releases to reflect the addition of
+the toolbin directory. (doc/Release.htm [1.7]: 2000/04/02 18:56:58 lpd)
+
+Implements the AutoRotatePages distiller parameter. (doc/Ps2pdf.htm [1.5]:
+2000/04/03 02:54:41 lpd)
+
+Updates the problem reporting procedure to use SourceForge; separates the
+description of the procedure from the reporting form.
+(doc/Bug-form.htm [1.4], doc/Bug-info.htm [1.1], doc/New-user.htm [1.4],
+doc/News.htm [1.24], doc/Readme.htm [1.4]: 2000/04/04 04:14:02 lpd)
+
+Updates release dates and version numbers. (doc/Bug-form.htm [1.5],
+doc/Bug-info.htm [1.3], doc/Htmstyle.htm [1.3], doc/Make.htm [1.9],
+doc/New-user.htm [1.5], doc/Projects.htm [1.3], doc/Ps2pdf.htm [1.6],
+doc/Psfiles.htm [1.3], doc/Readme.htm [1.5], man/ps2pdf.1 [1.4],
+man/ps2ps.1 [1.4]: 2000/04/07 05:21:45 lpd)
+
+Removes redundant material, and the www.aladdin.com distribution point, from
+the release procedure documentation. (doc/Release.htm [1.8]: 2000/04/07
+05:24:29 lpd)
+
+</pre><h2><a name="6.20 Procedures"></a>Procedures</h2><pre>
+
+Fixes problems:
+	- pdfread.dev incorrectly depended on dpsnext_. (int.mak [1.4]:
+2000/03/19 02:00:09 lpd)
+	- The referenced libpng version hadn't been updated to 1.0.5.
+(openvms.mmk [1.3]: 2000/03/20 16:38:46 lpd)
+	- The MSVC++ 6 compiler no longer recognizes the /FPi87 switch.
+(msvccmd.mak [1.2]: 2000/03/31 05:06:53 lpd)
+	- MSVC versions before 5, not before 6, recognize /FPi87.
+(msvccmd.mak [1.3]: 2000/03/31 05:50:33 lpd)
+	- Removes some occurrences of $,I,d,: that shouldn't be substituted.
+(toolbin/pre [1.2]: 2000/04/07 05:20:35 lpd)
+
+Increments the version number to 6.20, in anticipation of the next release.
+(We do this at the beginning of the development for a release, not the end.)
+(version.mak [1.6]: 2000/03/19 00:27:22 lpd)
+
+Adds a pseudo-encoding for the CFF StandardStrings that represent
+characters. (devs.mak [1.3], int.mak [1.3], unixinst.mak [1.5]: 2000/03/19
+00:38:50 lpd)
+
+Updates makefiles with dependencies for recent changes. (int.mak [1.5],
+lib.mak [1.3]: 2000/03/19 05:37:38 lpd)
+
+Adds dependencies for the new implementation of FunctionType 4 functions.
+(int.mak [1.6]: 2000/03/19 07:03:53 lpd)
+
+Splits off "vanilla" Functions into separate files, in anticipation of
+removing them (they were only used to implement PostScript Calculator
+Functions). (lib.mak [1.4]: 2000/03/19 07:33:08 lpd)
+
+Update the date and change log for the latest batches of checked-in changes.
+(version.mak [1.7]: 2000/03/19 17:29:57 lpd)
+
+Moves font-writing support into a new module (gdevpsf*), changing the source
+file names. Adds the ability to write CFF fonts, with either Type 1 or Type
+2 CharStrings; unfortunately, Acrobat Reader appears not to accept CFF fonts
+with Type 1 CharStrings. Adds the ability to convert Type 1 CharStrings to
+Type 2, including optimizing sequences of Type 1 operators into a single
+Type 2 operator. Implements writing CIDFontType 0 CFF fonts (CIDFonts) [NOT
+TESTED]. Starts (just barely) to remove more unneeded information from
+embedded TrueType fonts. (devs.mak [1.4], lib.mak [1.5]: 2000/03/20 07:02:12
+lpd)
+
+Updates dependencies to reflect today's batches of checked-in changes.
+(devs.mak [1.5], int.mak [1.7], lib.mak [1.6]: 2000/03/20 07:16:35 lpd)
+
+Updates the makefile for the renaming of gdevpsdf.c => gdevpsdu.c.
+(devs.mak [1.6]: 2000/03/20 19:30:35 lpd)
+
+Starts to move support for CIDFontType 0 and 2 into C code, needed by the
+PDF writer for handling CID-keyed fonts. Implements GlyphDirectory for
+CIDFonts. Makes GDBytes and CIDMapOffset optional for CIDFontType 0 fonts
+that have a GlyphDirectory (not documented in the PLRM, but clearly
+correct). Implements Adobe 3011 features: integer and dictionary CIDMaps,
+and the MetricsCount entry, in CIDFontType 2 fonts (but only in the C code,
+which isn't hooked in yet, not in the PostScript code in gs_cidfn.ps.)
+(int.mak [1.8], lib.mak [1.7]: 2000/03/20 19:53:06 lpd)
+
+Extends the C support for CIDFontType 0 fonts to include those with FontType
+2 subfonts in the FDArray (an Adobe 3011 addition, specifically for CFF
+fonts). (int.mak [1.9]: 2000/03/21 07:43:42 lpd)
+
+Adds invocation scripts and documentation for the PDF "optimizer".
+(unixinst.mak [1.6]: 2000/03/21 17:01:33 lpd)
+
+Splits off the ReusableStreamDecode filter as a separate module, since
+CIDFontType 0 fonts will use it even in LanguageLevels below 3.
+(int.mak [1.10]: 2000/03/21 21:34:57 lpd)
+
+Makes file streams remember the file name, needed for efficiently
+implementing reusable streams. (int.mak [1.11]: 2000/03/23 02:13:40 lpd)
+
+Checks in the latest consolidated change log. (version.mak [1.8]: 2000/03/24
+05:04:55 lpd)
+
+Changes the implementation of incrementally loaded CIDFontType 0 fonts to
+use a ReusableStreamDecode filter, in anticipation of moving the BuildGlyph
+procedure for these fonts from PostScript to C. (int.mak [1.12],
+version.mak [1.9]: 2000/03/27 16:36:24 lpd)
+
+Changes the default value of FPU_TYPE in all Windows and OS/2 makefiles from
+0 to 387, since all current desktop CPUs include floating point hardware.
+(msvc32.mak [1.3], msvclib.mak [1.3], os2.mak [1.4], watcw32.mak [1.3]:
+2000/03/28 17:03:48 lpd)
+
+Updates the change log with recent changes. (version.mak [1.10]: 2000/03/30
+07:59:39 lpd)
+
+Cleans up some dependencies missed at the last checkin. (devs.mak [1.7],
+int.mak [1.13]: 2000/03/31 05:03:30 lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files. (int.mak [1.14]:
+2000/04/02 07:38:46 lpd)
+
+Adds a variety of tools used to build and distribute Ghostscript releases.
+The only documentation is comments in the files themselves, and there isn't
+much of it. All aspects of these tools are subject to change without notice.
+(toolbin/3way.tcl [1.1], toolbin/cvs2hist.py [1.1],
+toolbin/errlist.tcl [1.1], toolbin/gsmake.tcl [1.1],
+toolbin/headers.tcl [1.1], toolbin/leaks.tcl [1.1],
+toolbin/makeset.tcl [1.1], toolbin/package.tcl [1.1], toolbin/pre [1.1],
+toolbin/pre.chk [1.1], toolbin/precheck.tcl [1.1], toolbin/smoke.ps [1.1],
+toolbin/suite.tcl [1.1], toolbin/tmake.tcl [1.1]: 2000/04/02 18:44:27 lpd)
+
+Moves gsindent from src to toolbin. (toolbin/gsindent [1.1]: 2000/04/02
+18:56:25 lpd)
+
+Adds an #include required by the Watcom compiler. (devs.mak [1.8]:
+2000/04/05 19:51:54 lpd)
+
+Adds a missing dependency. (lib.mak [1.8]: 2000/04/07 03:00:56 lpd)
+
+Updates a few dependencies for the release. (int.mak [1.15]: 2000/04/07
+05:23:12 lpd)
+
+Updates the build date for the release. (version.mak [1.11]: 2000/04/07
+05:25:18 lpd)
+
+Adds .cvsignore files, to prevent bogus warnings on cvs update.
+(.cvsignore [1.1], src/.cvsignore [1.1]: 2000/04/05 19:46:04 lpd)
+
+</pre><h2><a name="6.20 Utilities"></a>Utilities</h2><pre>
+
+Fixes problems:
+	- A couple of places in the Windows code didn't correctly handle
+Ghostscript version numbers of the form #.0#. (gp_wgetv.c [1.2]: 2000/03/22
+21:45:03 lpd)
+	- Replaces a final exit() with a return, to avoid a compiler
+warning. (genconf.c [1.2]: 2000/04/05 19:53:27 lpd)
+
+Makes geninit remove whitespace adjacent to hex and base-85 string literals.
+(geninit.c [1.2]: 2000/03/18 22:51:24 lpd)
+
+Adds a PDF linearizer ("optimizer"). This is a separate utility (not
+integrated with the pdfwrite driver), written in PostScript.
+(lib/pdfopt.ps [1.1], lib/pdfwrite.ps [1.1]: 2000/03/20 04:31:22 lpd)
+
+Replaces the O(N^2) sorting algorithm for printing unencoded characters with
+a O(N log N) algorithm, which makes printing Unicode and Chinese/Japanese
+fonts practical. (lib/prfont.ps [1.2]: 2000/03/21 06:39:49 lpd)
+
+Adds invocation scripts and documentation for the PDF "optimizer".
+(lib/pdfopt [1.1], lib/pdfopt.bat [1.1], lib/pdfopt.ps [1.2]: 2000/03/21
+17:01:33 lpd)
+
+Splits off the ReusableStreamDecode filter as a separate module, since
+CIDFontType 0 fonts will use it even in LanguageLevels below 3.
+(zfreuse.c [1.2]: 2000/03/21 21:34:57 lpd)
+
+Adds a variety of tools used to build and distribute Ghostscript releases.
+The only documentation is comments in the files themselves, and there isn't
+much of it. All aspects of these tools are subject to change without notice.
+(gsindent [1.2]: 2000/04/02 18:44:27 lpd)
+
+</pre><h2><a name="6.20 Drivers"></a>Drivers</h2><pre>
+
+Fixes problems:
+	- The color_info member of the Windows and OS/2 printer devices (and
+other devices using PC-style palettes) wasn't initialized properly, causing
+improper behavior. (gdevos2p.c [1.2], gdevpccm.h [1.2], gdevwpr2.c [1.3]:
+2000/03/20 21:05:11 lpd)
+	- Fixes a bug in the mswinpr2 driver in the handling of
+BitsPerPixel. (gdevwpr2.c [1.4]: 2000/03/22 17:08:33 lpd)
+	- In PCL XL output (pxl* drivers), if a PostScript image didn't
+provide enough source data, the remainder of the output image was
+erroneously filled with pixel value 0 (typically black or the foreground
+color). (gdevpx.c [1.2]: 2000/03/22 20:55:21 lpd)
+	- In the output of the pswrite driver (pdf2ps, ps2ps), the showpage
+for each page occurred before, not after, the restore that ended the page
+contents. This contradicted Adobe's documentation, and made utilities like
+N-up printing not work properly. (gdevps.c [1.4]: 2000/03/28 00:52:46 lpd)
+	- The PCL XL 2.0 value for sRGB color space was wrong, and the
+attribute for writing mode was missing. (gdevpxat.h [1.2], gdevpxen.h [1.2]:
+2000/03/29 18:19:44 lpd)
+	- When printing on monochrome LaserJet/DeskJet printers, the driver
+didn't set the number of copies to 1; on the LJ 4si, this sometimes caused
+double printing. (gdevdjet.c [1.2]: 2000/04/03 14:36:12 lpd)
+	- Updates clients for the change in the last argument of
+cff_string_index from uint * to int *. (gdevpsf2.c [1.4]: 2000/04/05
+19:55:29 lpd)
+
+Adds parsing for the remaining Acrobat Distiller 4 parameters. Implements
+the LockDistillerParams, xxxDownsampleThreshold, xxxImageDict, and
+xxxACSImageDict distiller parameters. Implements DCTEncode as an
+xxxImageFilter option (it used to cause a crash). Makes the
+AutoFilterxxxImages distiller parameters select JPEG encoding (with ACSDict)
+if the image has 8 bits per component and is not Indexed, and LZW/Flate
+otherwise: this still isn't right, but it's closer. Implementation changes:
+Changes the implementation of distiller parameter dictionaries from stream
+states to parameter lists; changes the test for masks in
+psdf_setup_image_filters, and changes the image argument from gs_image_t to
+gs_pixel_image_t. (gdevpsdf.h [1.4], gdevpsdi.c [1.3], gdevpsdp.c [1.3]:
+2000/03/20 05:40:04 lpd)
+
+Moves font-writing support into a new module (gdevpsf*), changing the source
+file names. Adds the ability to write CFF fonts, with either Type 1 or Type
+2 CharStrings; unfortunately, Acrobat Reader appears not to accept CFF fonts
+with Type 1 CharStrings. Adds the ability to convert Type 1 CharStrings to
+Type 2, including optimizing sequences of Type 1 operators into a single
+Type 2 operator. Implements writing CIDFontType 0 CFF fonts (CIDFonts) [NOT
+TESTED]. Starts (just barely) to remove more unneeded information from
+embedded TrueType fonts. (gdevpsd1.c [1.2], gdevpsdf.c [1.3],
+gdevpsdf.h [1.5], gdevpsdt.c [1.2], gdevpsf.h [1.1], gdevpsf1.c [1.1],
+gdevpsf2.c [1.1], gdevpsft.c [1.1], gdevpsfu.c [1.1], gdevpsfx.c [1.1]:
+2000/03/20 07:02:12 lpd)
+
+Renames an inappropriately named file. (gdevpsdf.c [1.4], gdevpsdf.h [1.6],
+gdevpsdu.c [1.1]: 2000/03/20 19:03:43 lpd)
+
+Extends the C support for CIDFontType 0 fonts to include those with FontType
+2 subfonts in the FDArray (an Adobe 3011 addition, specifically for CFF
+fonts). (gdevpsf.h [1.2]: 2000/03/21 07:43:42 lpd)
+
+Changes the procs structure of gs_type1_data to an in-line structure rather
+than a pointer to a const structure. (Needed for moving CIDFontType 0
+support into C.) (gdevpsf1.c [1.2], gdevpsf2.c [1.2], gdevpsfx.c [1.2]:
+2000/03/29 22:10:31 lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files.
+(gdevpsf2.c [1.3], gdevpsfu.c [1.2]: 2000/04/02 07:38:45 lpd)
+
+Slightly simplifies the output of the psmono and psgray drivers.
+(gdevpsim.c [1.2]: 2000/04/02 19:57:37 lpd)
+
+Adds an #include required by the Watcom compiler. (gdevpsf1.c [1.3]:
+2000/04/05 19:51:54 lpd)
+
+</pre><h2><a name="6.20 PDF writer"></a>PDF writer</h2><pre>
+
+Fixes problems:
+	- The pointer enumeration procedure for pdf_image_enum was wrong,
+possibly producing a mangled pointer and a memory access error if a garbage
+collection occured while writing an image in a PDF file. (gdevpdfi.c [1.5]:
+2000/03/20 05:54:13 lpd)
+	- The computation for testing whether a tiled pattern could be
+represented in line, and whether it exceeded Acrobat Reader's size limit,
+was wrong, causing some patterns not to be represented as Patterns.
+(gdevpdfi.c [1.6]: 2000/03/20 05:58:15 lpd)
+	- When ProcessColorModel=/DeviceCMYK, if the first object on a page
+or after changing the clipping path was white, the PDF writer would write it
+as black. (gdevpdfu.c [1.3]: 2000/03/21 18:36:36 lpd)
+	- If a page ended with an incomplete outline tree, an invalid memory
+access occurred. (gdevpdf.c [1.3], gdevpdfm.c [1.2]: 2000/03/24 05:09:56
+lpd)
+	- The SP pdfmark didn't check that its argument was a graphics
+stream. (gdevpdfm.c [1.4]: 2000/03/24 06:18:39 lpd)
+	- The name of the EndPage Distiller parameter collided with the
+EndPage page device parameter. (gdevpdfp.c [1.4]: 2000/03/28 07:45:25 lpd)
+	- If two embedded fonts had the same base font, the PDF file could
+wind up with an invalid entry in the xref table. (gdevpdft.c [1.4]:
+2000/04/01 01:18:32 lpd)
+
+Adds parsing for the remaining Acrobat Distiller 4 parameters. Implements
+the LockDistillerParams, xxxDownsampleThreshold, xxxImageDict, and
+xxxACSImageDict distiller parameters. Implements DCTEncode as an
+xxxImageFilter option (it used to cause a crash). Makes the
+AutoFilterxxxImages distiller parameters select JPEG encoding (with ACSDict)
+if the image has 8 bits per component and is not Indexed, and LZW/Flate
+otherwise: this still isn't right, but it's closer. Implementation changes:
+Changes the implementation of distiller parameter dictionaries from stream
+states to parameter lists; changes the test for masks in
+psdf_setup_image_filters, and changes the image argument from gs_image_t to
+gs_pixel_image_t. (gdevpdfi.c [1.4]: 2000/03/20 05:40:04 lpd)
+
+Moves font-writing support into a new module (gdevpsf*), changing the source
+file names. Adds the ability to write CFF fonts, with either Type 1 or Type
+2 CharStrings; unfortunately, Acrobat Reader appears not to accept CFF fonts
+with Type 1 CharStrings. Adds the ability to convert Type 1 CharStrings to
+Type 2, including optimizing sequences of Type 1 operators into a single
+Type 2 operator. Implements writing CIDFontType 0 CFF fonts (CIDFonts) [NOT
+TESTED]. Starts (just barely) to remove more unneeded information from
+embedded TrueType fonts. (gdevpdff.c [1.2], gdevpdfw.c [1.2]: 2000/03/20
+07:02:12 lpd)
+
+Substantially enhances the Cos object machinery. Interface: Adds a few more
+procedures, including a procedure to create a stream that writes directly
+into a Cos stream object, procedures for putting more kinds of values into
+arrays and dictionaries, and a param_list interface. Changes Cos objects to
+store a reference to the PDF device, and removes the device argument from
+all Cos procedures other than object creation. Replaces the Boolean
+is_object member of Cos values by a value_type enum: clients must now use
+COS_VALUE_IS_OBJECT() to test whether a value is an object reference. To
+reduce allocator overhead, makes the Cos procedures that take C strings no
+longer copy the string. Records whether each Cos object has been written
+into the output, so that in the future (but not in this batch of changes)
+resource definitions can be copied at the end of each page. Implementation:
+Moves more of the implementation of Cos objects to the .c file.
+(gdevpdf.c [1.4], gdevpdfi.c [1.7], gdevpdfm.c [1.3], gdevpdfo.c [1.2],
+gdevpdfo.h [1.2], gdevpdfr.c [1.2], gdevpdfu.c [1.4], gdevpdfx.h [1.3]:
+2000/03/24 06:12:52 lpd)
+
+Changes a few initializations to suppress warnings from one picky compiler
+that doesn't like ptr = buf - 1 where buf is an array. (gdevpdfr.c [1.3]:
+2000/03/28 02:01:34 lpd)
+
+Adds parsing for the remaining Acrobat Distiller 4 parameters, although most
+of them don't have any effect yet; brings documentation up to date.
+(gdevpdf.c [1.5], gdevpdfp.c [1.3], gdevpdfx.h [1.4]: 2000/03/28 07:36:58
+lpd)
+
+Implements LockDistillerParams; completes the StartPage/EndPage fix checked
+in just before. (gdevpdf.c [1.6], gdevpdfp.c [1.5], gdevpdfx.h [1.5]:
+2000/03/28 07:52:06 lpd)
+
+Changes the initial values of the "job control" parameters to match Acrobat
+Distiller 4. (gdevpdf.c [1.7], gdevpdfp.c [1.6], gdevpdfx.h [1.6]:
+2000/03/28 07:57:14 lpd)
+
+Implements the AutoRotatePages distiller parameter. (gdevpdf.c [1.8],
+gdevpdft.c [1.5], gdevpdfu.c [1.5], gdevpdfx.h [1.7]: 2000/04/03 02:54:41
+lpd)
+
+</pre><h2><a name="6.20 Interpreter (PDF)"></a>Interpreter (PDF)</h2><pre>
+
+Fixes problems:
+	- Reading embedded compressed CIDFonts wasn't implemented.
+(lib/pdf_font.ps [1.3]: 2000/03/19 01:28:59 lpd)
+	- PDF images with DeviceN color spaces caused an error.
+(lib/pdf_draw.ps [1.2]: 2000/03/19 01:44:53 lpd)
+	- PDF images with a Mask ignored the mask. (lib/pdf_draw.ps [1.3]:
+2000/03/19 01:46:27 lpd)
+	- the PDF interpreter hadn't been updated for the move to
+library-based FunctionType 4 Functions, and still tried to bind the names
+true and false to the no longer existing operators .true and .false.
+(lib/pdf_draw.ps [1.5]: 2000/03/19 07:37:03 lpd)
+	- FunctionType 2 and 3 functions didn't work.
+(lib/pdf_draw.ps [1.6]: 2000/03/19 15:23:10 lpd)
+	- In PDF files, the page CropBox was not being used to clip the
+output. (lib/pdf_main.ps [1.4], lib/pdf_ops.ps [1.3]: 2000/03/21 23:08:32
+lpd)
+	- The "fix" for FunctionTypes 2 and 3 in PDF files had made things
+worse, because the code didn't distinguish between resolving to a PostScript
+function (for shadings) and resolving to a PostScript procedure (for
+halftones, BG/UCR, alternate color space mapping, etc.)
+(lib/pdf_draw.ps [1.7]: 2000/03/23 18:31:46 lpd)
+	- Text with a Pattern color scaled the pattern according to the text
+matrix, not the default matrix of the marking context.
+(lib/pdf_base.ps [1.6], lib/pdf_main.ps [1.5], lib/pdf_ops.ps [1.4]:
+2000/03/30 18:01:58 lpd)
+	- Resolving a Shading didn't create a reusable stream for the
+shading data; since the data was then read at unpredictable times, the
+shading or other constructs in the PDF file could read incorrect data.
+(lib/pdf_draw.ps [1.8]: 2000/04/03 06:01:25 lpd)
+
+Adds a lforall procedure for the PDF linearizer. (lib/pdf_base.ps [1.3]:
+2000/03/19 01:50:05 lpd)
+
+Changes the PDF interpreter so that following an object reference doesn't
+store the result back into the referring slot, and so that # # R always
+creates an indirect object. This is necessary for the PDF linearizer. It
+shouldn't have any visible effect (other than a possible small performance
+cost). (lib/pdf_base.ps [1.4], lib/pdf_draw.ps [1.4]: 2000/03/19 01:53:58
+lpd)
+
+Refactors some code to make it usable by the PDF linearizer.
+(lib/pdf_main.ps [1.3]: 2000/03/19 17:26:42 lpd)
+
+Speeds up loading embedded Type 1 fonts a little. (lib/pdf_base.ps [1.5],
+lib/pdf_font.ps [1.4]: 2000/03/24 07:42:16 lpd)
+
+Speeds up reading embedded Type 1 fonts a little more.
+(lib/pdf_font.ps [1.5]: 2000/03/24 16:28:26 lpd)
+
+</pre><h2><a name="6.20 Interpreter"></a>Interpreter</h2><pre>
+
+Fixes problems:
+	- Font substitution was broken. (lib/gs_fonts.ps [1.3]: 2000/03/19
+00:22:05 lpd)
+	- The CFF reader gave an error if a font included any Subrs (it's
+very surprising that this hasn't surfaced before, but apparently Acrobat
+Distiller always produces CFF fonts with no Subrs); the CFF reader didn't
+default lenIV to -1 for Type 1 CharStrings; the CFF reader wasn't able to
+read CIDFonts. (lib/gs_cff.ps [1.3], lib/gs_cidfn.ps [1.4]: 2000/03/19
+00:45:40 lpd)
+	- EXTEND_NAMES had stopped working, because not all places that
+needed the index of a name ref used name_index rather than r_size
+(ilocate.c), and because the high_index value in the name sub-table was set
+incorrectly (iname.c). (ilocate.c [1.2], iname.c [1.2]: 2000/03/19 01:33:23
+lpd)
+	- The attribute check for Functions being executed was incorrect
+(always succeeded). (zfunc.c [1.2]: 2000/03/19 02:12:37 lpd)
+	- s_add_filter didn't ensure enough buffering. This entailed moving
+the NullEncode/Decode filters to stream.[hc]. (sfilter1.c [1.2]: 2000/03/19
+03:15:02 lpd)
+	- The parameters of SubFileDecode filters weren't initialized fully
+(required by a change in this version). (zfilter.c [1.3]: 2000/03/19
+04:03:45 lpd)
+	- The AutoPositionEPSFiles Distiller parameter was misspelled
+AutoPositionEPSFile. (lib/gs_pdfwr.ps [1.2]: 2000/03/19 05:03:31 lpd)
+	- Enumerating the elements of a dictionary-based parameter list
+returned garbage for the keys. (iparam.c [1.2]: 2000/03/19 15:13:13 lpd)
+	- .buildfont0 should not check CIDSystemInfo compatibility. The
+PLRM3 says PostScript interpreters do not make this check, even though the
+PLRM2 says compatibility is required (!). (zfcmap.c [1.2]: 2000/03/19
+16:53:50 lpd)
+	- If log2_transfer_map_size > 8, identity transfer functions
+returned garbage. The fix requires that if a client wants to set a transfer
+function to the identity mapping, it must call gx_set_identity_transfer
+rather than simply setting the procedure to gs_identity_transfer.
+(zcolor.c [1.2]: 2000/03/19 17:14:47 lpd)
+	- Separation color spaces didn't store the separation name.
+(zcssepr.c [1.2]: 2000/03/19 17:21:36 lpd)
+	- The addition of the dummy cid_Setup procedure in gs 6.01 was
+accidentally commented out. (lib/gs_cidfn.ps [1.5]: 2000/03/21 00:11:55 lpd)
+	- The test for whether an CIDFontType 2 outline string was large
+enough to include prefixed metrics was backwards, which would have caused
+problems with any font that used MetricsCount. (zfcid.c [1.3]: 2000/03/21
+00:43:17 lpd)
+	- A couple of places in the Windows code didn't correctly handle
+Ghostscript version numbers of the form #.0#. (dwsetup.cpp [1.2]: 2000/03/22
+21:45:03 lpd)
+	- In some cases, re-registering an existing font or CIDFont with
+definefont would cause an invalidfont error. (zbfont.c [1.4],
+zfont42.c [1.3]: 2000/03/28 18:20:39 lpd)
+	- Re-registering a CIDFont with definefont, or defining a CIDFont
+with definefont instead of /CIDFont defineresource, caused an invalidfont
+error or a crash. (lib/gs_cidfn.ps [1.9], lib/gs_fonts.ps [1.4]: 2000/03/28
+18:21:50 lpd)
+	- The new C BuildGlyph code for CIDFontType 0 fonts didn't handle
+GlyphDirectory or Type 2 CharStrings correctly. (lib/gs_cidfn.ps [1.12],
+zfcid.c [1.8]: 2000/03/31 23:21:57 lpd)
+	- The internaldict "operator" was allocated in local VM, preventing
+it from being bound into procedures allocated in global VM.
+(lib/gs_init.ps [1.6]: 2000/04/04 22:16:02 lpd)
+	- If there was a CIDInit ProcSet defined in the filesystem, the code
+for initializing the built-in CIDInit ProcSet became confused.
+(lib/gs_cidfn.ps [1.13]: 2000/04/04 22:17:33 lpd)
+	- Fixes several problems in resourceforall and resource loading: the
+operands of resourceforall were restored even in the case of an error in the
+client's procedure; the name Instances had special meaning for some Adobe
+code; resourceforall caused an invalidaccess error if an operand was in
+local VM but the current VM was global; loading a resource from a file could
+cause a typecheck error if the file left values on the operand stack.
+(interp.c [1.3], lib/gs_ccfnt.ps [1.2], lib/gs_res.ps [1.3]: 2000/04/04
+22:26:02 lpd)
+	- resourceforall didn't enumerate external (loadable) instances, and
+would enumerate an instance twice if it had both a local and a global
+definition. (lib/gs_res.ps [1.4]: 2000/04/05 21:07:02 lpd)
+	- The implementation of resourcestatus wasn't compatible with some
+badly written code in an Adobe font downloader that assumes that the
+implementation of resourcestatus in Generic and Font is the same.
+(lib/gs_res.ps [1.5]: 2000/04/05 21:20:07 lpd)
+	- The just-checked-in fixed for resourceforall didn't work properly
+for the IdiomSet category. (They probably failed for other categories that
+had no instances, but we didn't check this.) (lib/gs_res.ps [1.6]:
+2000/04/05 21:51:43 lpd)
+	- Some Adobe font downloading code assumed that loading a resource
+file would never leave extra values on the stack; our implementation didn't
+ensure this (by popping them if needed). (lib/gs_res.ps [1.8]: 2000/04/06
+04:50:28 lpd)
+	- If an alphabetic font defined and used a .notdef character,
+pdfwrite always converted it to a bitmap. (lib/gs_lgo_e.ps [1.2]: 2000/04/07
+02:48:23 lpd)
+
+Provides a gs_atan2_degrees procedure to parallel sin and cos.
+(zmath.c [1.2]: 2000/03/18 23:10:39 lpd)
+
+Speeds up string garbage collection by scanning unmodified string regions
+faster. (igcstr.c [1.2]: 2000/03/18 23:29:32 lpd)
+
+Adds the ImagemaskTrapping parameter to the trapping state.
+(lib/gs_trap.ps [1.2]: 2000/03/18 23:35:53 lpd)
+
+Increments the version number to 6.20, in anticipation of the next release.
+(We do this at the beginning of the development for a release, not the end.)
+(lib/gs_init.ps [1.4]: 2000/03/19 00:27:22 lpd)
+
+Adds a pseudo-encoding for the CFF StandardStrings that represent
+characters. (lib/gs_cff.ps [1.2], lib/gs_css_e.ps [1.1]: 2000/03/19 00:38:50
+lpd)
+
+Refactors the code for getting Type 1/2/4 font parameters so it can be used
+for FDArray entries of CIDFontType 0 fonts. (ifont1.h [1.2], zfont1.c [1.2]:
+2000/03/19 02:07:45 lpd)
+
+Speeds up Function evaluation slightly, by preallocating space for a
+reasonable number of operands and results on the C stack rather than always
+allocating it on the heap. (zfunc.c [1.3]: 2000/03/19 02:16:58 lpd)
+
+Adds a public procedure for determining whether a PostScript object is a
+Function, and if so, returning the pointer to the gs_function_t structure.
+(ifunc.h [1.2], zfunc.c [1.4]: 2000/03/19 02:22:01 lpd)
+
+Splits out the [T]BCP filter interface into a separate file. (zfbcp.c [1.2]:
+2000/03/19 02:40:18 lpd)
+
+Adds a skip_count parameter to the SubFileDecode filter, giving the number
+of initial bytes or records to skip over. (Needed for printing FunctionType
+4 functions, possibly useful for other things.) (sfilter1.c [1.3]:
+2000/03/19 03:20:18 lpd)
+
+Replaces the implementation of FunctionType 4 functions at the PostScript
+language level with one that uses the new library-based facilities.
+(zdevice2.c [1.2], zfunc4.c [1.2]: 2000/03/19 06:56:23 lpd)
+
+Changes the key type returned by parameter list enumeration to include a
+persistence flag, makes C parameter lists support non-persistent keys, and
+upgrades GC descriptors so that parameter lists can be used non-transiently;
+updates implementors of parameter lists to call gs_param_list_init to
+initialize the common members, which is now required. (iparam.c [1.3]:
+2000/03/19 15:16:11 lpd)
+
+Makes Separation and DeviceN color spaces convert their tint transform
+function to a FunctionType 4 Function if possible, for better accuracy and
+to allow writing in PDF files. (lib/gs_lev2.ps [1.2], lib/gs_ll3.ps [1.2]:
+2000/03/19 15:28:34 lpd)
+
+Makes st_indexed_map private. Clients must now use the constructor procedure
+alloc_indexed_map rather than allocating instances directly.
+(zcsindex.c [1.2]: 2000/03/19 16:37:28 lpd)
+
+Refactors the code for building fonts so it can be used for FDArray entries
+of CIDFontType 0 fonts. (bfont.h [1.2], zbfont.c [1.2]: 2000/03/19 16:45:47
+lpd)
+
+Adds a .fileposition operator that will read the position even of
+non-positionable streams, needed for the PDF linearizer. (zfileio.c [1.3]:
+2000/03/20 04:30:49 lpd)
+
+Starts to move support for CIDFontType 0 and 2 into C code, needed by the
+PDF writer for handling CID-keyed fonts. Implements GlyphDirectory for
+CIDFonts. Makes GDBytes and CIDMapOffset optional for CIDFontType 0 fonts
+that have a GlyphDirectory (not documented in the PLRM, but clearly
+correct). Implements Adobe 3011 features: integer and dictionary CIDMaps,
+and the MetricsCount entry, in CIDFontType 2 fonts (but only in the C code,
+which isn't hooked in yet, not in the PostScript code in gs_cidfn.ps.)
+(icid.h [1.1], ifont.h [1.2], ifont42.h [1.1], zcid.c [1.2], zfcid.c [1.1],
+zfcmap.c [1.3], zfont42.c [1.2]: 2000/03/20 19:53:06 lpd)
+
+Hooks the new CIDMap code into the BuildGlyph procedure for CIDFontType 2
+fonts. (Contrary to a previous log comment, MetricsCount is already hooked
+in.) Support for CIDFontType 2 fonts is now implemented entirely in C, as
+for Type 42 fonts. (lib/gs_cidfn.ps [1.6], zfcid.c [1.2]: 2000/03/21
+00:32:15 lpd)
+
+Extends the C support for CIDFontType 0 fonts to include those with FontType
+2 subfonts in the FDArray (an Adobe 3011 addition, specifically for CFF
+fonts). (ifont2.h [1.1], zfcid.c [1.4], zfont2.c [1.2]: 2000/03/21 07:43:42
+lpd)
+
+Changes Subr loading for CIDFontType 0 fonts from lazy to immediate, so that
+C code can be guaranteed access to the Subrs. (In every CIDFontType 0 font
+that we have seen, SubrCount is 5, so this has no significant time or space
+cost.) Also adds support for FDBytes > 1 in GlyphDirectory definitions.
+(lib/gs_cidfn.ps [1.7]: 2000/03/21 20:06:44 lpd)
+
+Splits off the ReusableStreamDecode filter as a separate module, since
+CIDFontType 0 fonts will use it even in LanguageLevels below 3.
+(lib/gs_frsd.ps [1.1], lib/gs_ll3.ps [1.3], zfrsd.c [1.1]: 2000/03/21
+21:34:57 lpd)
+
+Makes file streams remember the file name, needed for efficiently
+implementing reusable streams. (zfile.c [1.3], zfileio.c [1.4]: 2000/03/23
+02:13:40 lpd)
+
+Changes the new .filename operator to return true/false rather than causing
+an error; redefines findlibfile in terms of a simpler .libfile operator +
+.filename. (lib/gs_init.ps [1.5], zfile.c [1.4], zfileio.c [1.5]: 2000/03/23
+18:47:17 lpd)
+
+Finishes implementing the file case of ReusableStreamDecode. This required
+adding the ability to restrict file-reading streams to a subfile.
+(lib/gs_frsd.ps [1.2], sfilter1.c [1.4], zfileio.c [1.6], zfrsd.c [1.2]:
+2000/03/24 03:59:42 lpd)
+
+Changes the implementation of incrementally loaded CIDFontType 0 fonts to
+use a ReusableStreamDecode filter, in anticipation of moving the BuildGlyph
+procedure for these fonts from PostScript to C. (lib/gs_cidfn.ps [1.8],
+zbfont.c [1.3], zfcid.c [1.5]: 2000/03/27 16:36:24 lpd)
+
+Changes the get_outline / glyph_data procedure for getting encoded font
+outline data to return an indication of whether the outline data were just
+allocated and can be freed by the client. (This is a possibly
+non-backward-compatible change.) (zfcid.c [1.6]: 2000/03/28 18:47:02 lpd)
+
+Changes the procs structure of gs_type1_data to an in-line structure rather
+than a pointer to a const structure. (Needed for moving CIDFontType 0
+support into C.) (zfont1.c [1.3]: 2000/03/29 22:10:31 lpd)
+
+Finishes moving support for CIDFontType 0 fonts from PostScript to C.
+(ifont.h [1.3], ifont42.h [1.2], lib/gs_cidfn.ps [1.10], zfcid.c [1.7],
+zfont42.c [1.4]: 2000/03/31 04:55:18 lpd)
+
+Allows dictionaries as the value of CIDMap resources. (Also removes an
+unrelated obsolete comment.) (lib/gs_cidfn.ps [1.11]: 2000/03/31 05:11:30
+lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files. (ichar1.h [1.2],
+ifcid.h [1.1], zchar1.c [1.2], zfcid.c [1.9], zfcid0.c [1.1],
+zfcid1.c [1.1], zfont1.c [1.4]: 2000/04/02 07:38:46 lpd)
+
+Makes the .writefont9 operator (used only for testing) available in both
+DEBUG and PROFILE configurations. (zfcid0.c [1.2]: 2000/04/03 02:37:55 lpd)
+
+Extends .forceput to handle arrays as well as dictionaries, required to fix
+a bug with internaldict. (zdict.c [1.2], zgeneric.c [1.2]: 2000/04/04
+22:13:23 lpd)
+
+Works around an Adobe code assumption that the default FindResource
+procedure does *not* call the ResourceStatus procedure if the requested
+instance is already defined in VM. (lib/gs_res.ps [1.7]: 2000/04/05 23:31:54
+lpd)
+
+Implements the framework for superexec (but none of the actual access check
+bypasses). (icontext.c [1.2], icstate.h [1.2], zcontrol.c [1.2]: 2000/04/06
+04:40:06 lpd)
+
+Extends the undocumented CCRun procedure to take an additional argument, a
+Private dictionary, required by some Adobe font downloading code.
+(lib/gs_type1.ps [1.3]: 2000/04/06 05:25:10 lpd)
+
+</pre><h2><a name="6.20 Streams"></a>Streams</h2><pre>
+
+Fixes problems:
+	- s_add_filter didn't ensure enough buffering. This entailed moving
+the NullEncode/Decode filters to stream.[hc]. (sfilter.h [1.3],
+stream.c [1.3], stream.h [1.3]: 2000/03/19 03:15:02 lpd)
+	- When FPU_TYPE <= 0, the image interpolation code lost too much
+accuracy, producing color streaks in the output. (Fix by DanCoby.)
+(siscale.c [1.2]: 2000/03/29 20:34:45 lpd)
+	- Fixes a couple of typos in the recently checked-in image
+interpolation fix. (siscale.c [1.3]: 2000/03/30 06:55:26 lpd)
+
+Splits out the [T]BCP filter interface into a separate file. (sbcp.c [1.2],
+sbcp.h [1.1], sfilter.h [1.2]: 2000/03/19 02:40:18 lpd)
+
+Adds a skip_count parameter to the SubFileDecode filter, giving the number
+of initial bytes or records to skip over. (Needed for printing FunctionType
+4 functions, possibly useful for other things.) (sfilter.h [1.4]: 2000/03/19
+03:20:18 lpd)
+
+Changes the key type returned by parameter list enumeration to include a
+persistence flag, makes C parameter lists support non-persistent keys, and
+upgrades GC descriptors so that parameter lists can be used non-transiently;
+updates implementors of parameter lists to call gs_param_list_init to
+initialize the common members, which is now required. (spsdf.c [1.2]:
+2000/03/19 15:16:11 lpd)
+
+Makes file streams remember the file name, needed for efficiently
+implementing reusable streams. (stream.c [1.4], stream.h [1.4]: 2000/03/23
+02:13:40 lpd)
+
+Finishes implementing the file case of ReusableStreamDecode. This required
+adding the ability to restrict file-reading streams to a subfile.
+(sfxfd.c [1.2], sfxstdio.c [1.2], stream.c [1.5], stream.h [1.5]: 2000/03/24
+03:59:42 lpd)
+
+Changes a few initializations to suppress warnings from one picky compiler
+that doesn't like ptr = buf - 1 where buf is an array. (spsdf.c [1.3]:
+2000/03/28 02:01:34 lpd)
+
+</pre><h2><a name="6.20 Library"></a>Library</h2><pre>
+
+Fixes problems:
+	- Two comments in the file were incorrect. (gsiparm3.h [1.2]:
+2000/03/19 02:46:11 lpd)
+	- param_coerce_typed, which works with any parameter list
+implementation, was incorrectly described as associated with the default
+implementation. (gsparam.h [1.2]: 2000/03/19 03:37:08 lpd)
+	- TrueType fonts didn't use vhea/vmtx if WMode = 1. Also makes
+gs_font_type42 subclassable, for implementing CIDFontType 2 fonts, and makes
+its procedure for getting a glyph's side bearing and width virtual, required
+to support MetricsCount in CIDFontType 2 fonts. (gstype42.c [1.3],
+gxfont42.h [1.2]: 2000/03/19 03:58:51 lpd)
+	- ImageType 4 images didn't give an error for out-of-range MaskColor
+values. The file also had an unnecessary #include. (gximage4.c [1.2]:
+2000/03/19 04:10:09 lpd)
+	- If log2_transfer_map_size > 8, identity transfer functions
+returned garbage. The fix requires that if a client wants to set a transfer
+function to the identity mapping, it must call gx_set_identity_transfer
+rather than simply setting the procedure to gs_identity_transfer.
+(gxclrast.c [1.3], gxcmap.c [1.2], gxfmap.h [1.2]: 2000/03/19 17:14:47 lpd)
+	- Fixes a warning about aliasing produced by one extremely picky
+compiler. (gsnogc.c [1.2]: 2000/03/22 21:39:32 lpd)
+	- Filling or clipping with ridiculously large (out-of-bounds)
+coordinates could cause an internal overflow that produced incorrect
+results. (This is probably not the last such bug.) (gxfill.c [1.2]:
+2000/03/30 07:03:59 lpd)
+
+Provides a gs_atan2_degrees procedure to parallel sin and cos.
+(gsmisc.c [1.2], gxfarith.h [1.2]: 2000/03/18 23:10:39 lpd)
+
+Improves the 8x8 bitmap "flipping" procedure to take advantage of 32-bit
+ints. (gsutil.c [1.2]: 2000/03/18 23:16:16 lpd)
+
+Adds a public procedure for restricting a color to its legal range.
+(gscspace.c [1.2], gscspace.h [1.2], gxcspace.h [1.2]: 2000/03/18 23:19:17
+lpd)
+
+Adds the new ImagemaskTrapping parameter to the trapping state.
+(gstrap.c [1.2], gstrap.h [1.2]: 2000/03/18 23:26:17 lpd)
+
+Increments the version number to 6.20, in anticipation of the next release.
+(We do this at the beginning of the development for a release, not the end.)
+(gscdef.c [1.2]: 2000/03/19 00:27:22 lpd)
+
+Adds a pseudo-encoding for the CFF StandardStrings that represent
+characters. (gsccode.h [1.2]: 2000/03/19 00:38:50 lpd)
+
+Adds a bit_index procedure to the implementation of device halftones,
+required for writing halftones in PDF files. (The only implementors are
+internal ones.) (gxdht.h [1.2], gxhtbit.c [1.2]: 2000/03/19 05:10:55 lpd)
+
+Adds a public procedure for getting a palette entry of an Indexed color
+space, used when writing Indexed color spaces in PDF files.
+(gscindex.h [1.1], gscolor2.c [1.2], gscolor2.h [1.2]: 2000/03/19 05:20:28
+lpd)
+
+Reimplements "PostScript calculator" (FunctionType 4) functions entirely in
+C, to allow them to be written out in PDF files. (gsfunc4.c [1.1],
+gsfunc4.h [1.1], gsstruct.h [1.2]: 2000/03/19 05:25:53 lpd)
+
+Moves gx_device_color_equal to the public API, for detecting redundant color
+setting when writing PDF files. (gsdcolor.h [1.2], gxdcolor.c [1.2],
+gxdcolor.h [1.2]: 2000/03/19 06:46:08 lpd)
+
+Changes the default value of BufferSpace to 4 Mb. In desktop applications,
+this is a reasonable value that can substantially improve performance
+(especially for color printers); embedded applications will want to set
+BufferSpace themselves in any case. (gdevprn.h [1.2]: 2000/03/19 06:51:13
+lpd)
+
+Adds virtual procedures for Functions to write their parameters to a
+parameter list, and to access their data source and subfunctions. This is
+needed for writing Functions in PDF files. This change is also a
+prerequisite for the C implemention of FunctionType 4 functions, even though
+it appears later in the change log. (gsdsrc.h [1.2], gsfunc.c [1.2],
+gsfunc.h [1.2], gsfunc0.c [1.2], gsfunc3.c [1.2], gsparam.c [1.2],
+gsparam.h [1.3], gxfunc.h [1.2]: 2000/03/19 07:24:53 lpd)
+
+Splits off "vanilla" Functions into separate files, in anticipation of
+removing them (they were only used to implement PostScript Calculator
+Functions). (gsfunc.c [1.3], gsfunc.h [1.3], gsfuncv.c [1.1],
+gsfuncv.h [1.1]: 2000/03/19 07:33:08 lpd)
+
+Adds a procedure for allocating a C parameter list. (gscparam.c [1.2],
+gsparam.h [1.4]: 2000/03/19 15:00:05 lpd)
+
+Undoes a premature change that depends on an update not yet checked in.
+(gscparam.c [1.3]: 2000/03/19 15:07:59 lpd)
+
+Changes the key type returned by parameter list enumeration to include a
+persistence flag, makes C parameter lists support non-persistent keys, and
+upgrades GC descriptors so that parameter lists can be used non-transiently;
+updates implementors of parameter lists to call gs_param_list_init to
+initialize the common members, which is now required. (gscparam.c [1.4],
+gsparam.c [1.3], gsparam.h [1.5]: 2000/03/19 15:16:11 lpd)
+
+Adds a procedure for copying one parameter list to another.
+(gsparamx.c [1.2], gsparamx.h [1.2]: 2000/03/19 15:35:31 lpd)
+
+Records the CTM used for sampling HalftoneType 1 spot functions. This is
+needed for recognizing the standard spot functions when producing PDF
+output. Also factors the code for initializing spot functions for the
+benefit of the PDF writer. (gshtscr.c [1.2], gxdht.h [1.3], gzht.h [1.2]:
+2000/03/19 15:43:36 lpd)
+
+Adds a proc_data member to the map for Separation and Indexed color spaces.
+(gscolor2.c [1.3], gxcolor2.h [1.2]: 2000/03/19 16:23:46 lpd)
+
+Makes st_indexed_map private. Clients must now use the constructor procedure
+alloc_indexed_map rather than allocating instances directly.
+(gscolor2.c [1.4], gscsepr.c [1.2], gxclrast.c [1.2], gxcolor2.h [1.3]:
+2000/03/19 16:37:28 lpd)
+
+Adds procedures for building and accessing DeviceN color spaces.
+(gscdevn.c [1.2], gscdevn.h [1.1]: 2000/03/19 17:02:37 lpd)
+
+Exports the 'blend' operators of the Type 1 interpreter, for use by the Type
+1 / Type 2 font writer. (gstype1.c [1.3], gxtype1.c [1.2], gxtype1.h [1.3]:
+2000/03/19 18:46:44 lpd)
+
+Starts to move support for CIDFontType 0 and 2 fonts into C code. (These
+header files are the ones needed to compile the new gdevpsf* files; they
+don't interact with any existing code.) (gxcid.h [1.1], gxfcid.h [1.1]:
+2000/03/20 06:40:22 lpd)
+
+Moves font-writing support into a new module (gdevpsf*), changing the source
+file names. Adds the ability to write CFF fonts, with either Type 1 or Type
+2 CharStrings; unfortunately, Acrobat Reader appears not to accept CFF fonts
+with Type 1 CharStrings. Adds the ability to convert Type 1 CharStrings to
+Type 2, including optimizing sequences of Type 1 operators into a single
+Type 2 operator. Implements writing CIDFontType 0 CFF fonts (CIDFonts) [NOT
+TESTED]. Starts (just barely) to remove more unneeded information from
+embedded TrueType fonts. (gxttf.h [1.1]: 2000/03/20 07:02:12 lpd)
+
+Starts to move support for CIDFontType 0 and 2 into C code, needed by the
+PDF writer for handling CID-keyed fonts. Implements GlyphDirectory for
+CIDFonts. Makes GDBytes and CIDMapOffset optional for CIDFontType 0 fonts
+that have a GlyphDirectory (not documented in the PLRM, but clearly
+correct). Implements Adobe 3011 features: integer and dictionary CIDMaps,
+and the MetricsCount entry, in CIDFontType 2 fonts (but only in the C code,
+which isn't hooked in yet, not in the PostScript code in gs_cidfn.ps.)
+(gsfcid.c [1.1], gsfcmap.c [1.3], gxfcmap.h [1.2], gxfont1.h [1.2]:
+2000/03/20 19:53:06 lpd)
+
+Changes a few initializations to suppress warnings from one picky compiler
+that doesn't like ptr = buf - 1 where buf is an array. (gxclpath.c [1.2]:
+2000/03/28 02:01:34 lpd)
+
+Changes the get_outline / glyph_data procedure for getting encoded font
+outline data to return an indication of whether the outline data were just
+allocated and can be freed by the client. (This is a possibly
+non-backward-compatible change.) (gxfcid.h [1.2], gxfont42.h [1.3]:
+2000/03/28 18:47:02 lpd)
+
+Changes the procs structure of gs_type1_data to an in-line structure rather
+than a pointer to a const structure. (Needed for moving CIDFontType 0
+support into C.) (gstype1.c [1.4], gstype2.c [1.3], gxfont1.h [1.3],
+gxtype1.c [1.3]: 2000/03/29 22:10:31 lpd)
+
+Finishes moving support for CIDFontType 0 fonts from PostScript to C.
+(gxfcid.h [1.3]: 2000/03/31 04:55:18 lpd)
+
+Finishes implementing the ability to write CIDFontType 0 CFFs. This involved
+a surprising number of changes in other font-related files. (gsfcid.c [1.2],
+gxfcid.h [1.4]: 2000/04/02 07:38:46 lpd)
+
+<hr>
+
 <h1><a name="Version6.01"></a>Version 6.01 (2000-03-17)</h1>
 
 This is a bug-fix release for 6.0.
@@ -844,7 +1948,7 @@ full details of the terms of using, copying, modifying, and redistributing
 Aladdin Ghostscript.
 
 <p>
-Ghostscript version 6.01, 17 March 2000
+Ghostscript version 6.20, 6 April 2000
 
 </font>
 
diff --git a/gs/doc/News.htm b/gs/doc/News.htm
index 6e10378a8..bd808695c 100644
--- a/gs/doc/News.htm
+++ b/gs/doc/News.htm
@@ -55,12 +55,32 @@ overview</a>.
 
 <!-- [2.0 begin contents] ================================================== -->
 
-<pre>
-<h1><a name="Version6.20"></a>Version 6.20 (2000-xx-xx)</h1>
+<h1><a name="Version6.20"></a>Version 6.20 (2000-04-06)</h1>
+
+<p>
+This fileset includes the first steps towards bringing the pdfwrite driver
+closer to matching Acrobat Distiller 4.  Highlights:
+
+<ul>
+
+<li> Reimplementation of CIDFontType 0 support in C rather than PostScript;
+
+<li> Parsing (but not functional implementation) of nearly all the Acrobat
+Distiller 4 parameters;
 
-This fileset includes major additions and revisions to bring the pdfwrite
-driver closer to matching Acrobat Distiller 4.  This also requires upgrading
-several aspects of the library and the PostScript and PDF interpreters.
+<li> Implementation of AutoRotatePages and DCTEncode filtering in the PDF
+writer;
+
+<li> A PDF linearizer ("optimizer").
+
+</ul>
+
+<p>
+All problems registered on SourceForge numbered 103963 or lower are closed,
+except for the following: 101549, 101814, 101829, 101905, 101955, 102046,
+102047, 102132, 102146, 102735, 102901, 103016, 103528, 103963.
+
+<pre>
 
 <h2><a name="6.20_Incompatible_changes"></a>Incompatible changes</h2>
 
@@ -131,7 +151,7 @@ full details of the terms of using, copying, modifying, and redistributing
 Aladdin Ghostscript.
 
 <p>
-Ghostscript version 6.20, xx xxxxxx 2000
+Ghostscript version 6.20, 6 April 2000
 
 </font>
author	L Peter Deutsch <lpd@ghostscript.com>	2000-04-07 05:33:20 +0000
committer	L Peter Deutsch <lpd@ghostscript.com>	2000-04-07 05:33:20 +0000
commit	808fbd59d49b66dff57e20e4f7a50bebd17ee63a (patch)
tree	26b7c57ca7ee44165f085e490f257b14ed3ff539
parent	64bbbf83ceab1ac14ebbb33bd52063575524da81 (diff)
download	ghostpdl-808fbd59d49b66dff57e20e4f7a50bebd17ee63a.tar.gz