1 $Id: CHANGES,v 1.9 2005/08/24 10:54:02 taco Exp $
2 By John Hobby and others. Public domain (see README).
4 ----------------------------------------------------------------------
5 What is new in the alpha release of MPlib (0.10.0):
6 ----------------------------------------------------------------------
8 * The source is converted to cweb, and split into a library part
9 (mpdir/lib/*.w) and a frontend executable (mpdir/mpost.w).
11 * The front end executable is named "newmpost", this takes
12 care of configuring the MPlib library via C code, and uses
13 kpathsea for file searching. There is no change file involved,
14 and the web2c runtime library is not used.
16 * Some of the internal arrays now grow dynamically when needed:
19 * the string pool and number of strings
20 * the font memory and number of fonts
21 * the number of "readfrom" and "write" files
22 * the path segment size
23 * the input nesting stack
24 * the number of new internals
25 * the TFM writing arrays (but these are limited by TFM format)
27 Still not doing that (so these can only be changed in --ini mode):
31 * the number of simultaneous macro parameters
32 * the level of "input" file nesting
34 * The following command-line options are ignored by the front-end
40 -[no-]parse-first-line
46 The other web2c command-line options should work as normal.
48 * the mpware tools are not in this distribution, their functionality
49 will eventually be assimilated into the frontend application.
51 * the build process depends on a local "ctangle" command being in the
52 path, for now. The confiration and building system is not yet complete.
54 * API documentation is still missing, but the MetaPost input language
57 ----------------------------------------------------------------------
58 What is new in version 1.002:
59 ----------------------------------------------------------------------
61 * Version 1.001 introduced a memory allocation error in mpto that could
62 result in the program looping endlessly
64 ----------------------------------------------------------------------
65 What is new in version 1.001:
66 ----------------------------------------------------------------------
68 * The default cmyk 'black' color now uses only black, not all four
69 ink colors (after a discussion on the mailing list).
71 * Some issues were reported with the new turningnumber algorithm,
72 all known problems are now fixed.
74 * Gábor Braun discovered that mpost did not always download the font
75 encodings into all the created output files.
77 * Akira Kakuto and Hartmut Henkel found some small issues in mpto
78 regarding trailing and leading whitespace.
80 * A fix for the 'Helvetica' entries in trfonts.map was provided by
81 Werner Lemberg, and Michail Vidiassov supplied two extra font
82 entries for troff.map (Symbol and ZapfDingbats). Karl Berry
83 provided the new file troff-updmap.map, to be used by the updmap
86 * Mpost now supports web2c's --output-directory option.
88 * Any warnings about missing fonts and characters are now always
89 written to the terminal as well as to the log.
91 * Now that makempx is a C program, it needed a different install line
92 in build.sh. Also, Olaf Mersmann contributed a patch to recognize
95 * Luigi Scarso found some typing errors in the web source that prevented
96 clean weaving of the source.
98 * Stephan Hennig fixed a number of problems in the manual (mpman.tex)
99 and the introduction paper (mpintro.tex). He also wrote new sections on
100 how to preview metapost graphics and on how to use metapost graphics
101 inside other documents. On top of that, the manual is now hypertext-aware,
102 and fixes for a whole series of small problems have been applied.
104 ----------------------------------------------------------------------
105 What is new in version 1.000:
106 ----------------------------------------------------------------------
108 * The use of DSC (document structuring) comments has been
109 been cleaned up, thanks to comments by Michail Vidiassov.
111 * By setting prologues to 2 or 3, you can ask MetaPost to
112 reencode and include the used labels fonts in the output,
113 thus creating proper Encapsulated PostScript files even
114 if labels are present.
116 * Support for greyscale and cmykcolor models is added.
118 * The new drawing options "withprescript" and withpostscript"
119 allow the user to attach PostSCript special text to a specific
122 * Setting the new internal "mpprocset" to 1 will make MetaPost
123 create a somewhat extended preamble that defines shortcuts
124 for the postscript commands (e..g "l" instead of "lineto").
125 For big images, this can help shrink the output a bit.
127 * The pool file is now integrated in the executable, so there
128 is not separate 'mp.pool' anymore, except at build time.
130 * Groff support is redone, and dmp now uses kpathsea searching.
131 Groff related changes are thanks to the efforts of Werner
132 Lemberg and Michail Vidiassov
134 * makempx is now a compiled executable on all systems,
135 thank you Akira Kakuto
137 * The error for 'special's longer then 255 characters
138 is removed, so specials can now be of any length.
140 * There is new turningnumber implementation that attempts
141 to find the mathematically correct "turningnumber" of a
142 path. The formulae are derived from a mailinglist discussion
143 between (especially) Dan Luecking and Giuseppe Bilotta.
145 * The manual is updated and modernized. It is currently
146 maintained by Stephan Hennig and Troy Henderson.
148 ------------------------------------------------------------------
149 Changes in version 0.920:
150 ----------------------------------------------------------------------
152 * Fixed a long-standing bug in web2c where changing values of the
153 memory_size setting in web2c could cause crashes and other random
154 problems. The memory array size is now written to the dump file
155 and loading is aborted if the values do not match.
156 * Implement configurable figure output filename templates.
157 * Implement cmyk, greyscale, and marking only color models.
158 * The mpost executable is now version 0.920
160 ----------------------------------------------------------------------
161 Changes in version 0.902:
162 ----------------------------------------------------------------------
163 * Fix a bug in mpto resulting in correctly placed labels (with
164 thanks to Dan Luecking)
165 * Fix a bug blocking compilation of dmp on MacOSX
166 * The mpost,dmp,mpto executables are now version 0.902
169 ----------------------------------------------------------------------
170 Changes in version 0.901:
171 ----------------------------------------------------------------------
172 * A corrected bugfix for bug item 3 from version 0.9 (the old fix
173 made metapost fail the trap test)
174 * Included mpost.mp for mem generation
175 * Updated the trap test output.
176 * The mpost executable is now version 0.901
178 ----------------------------------------------------------------------
179 What is new in version 0.9:
180 ----------------------------------------------------------------------
181 1. There is a new internal quantity called mpversion that reports the
182 current metapost version, and the version information is also written
183 to the PostScript file.
184 2. The LaTeX sources of the mpman, mpintro, and mpgraph manuals have
185 become part of the distribution package.
186 3. TEX.mp now has TeX format support through a pair of macros called
187 TEXPRE() and TEXPOST(). This llows you to process the contents of
188 the TEX() macro with, for example, LaTeX (instead of plain TeX).
189 An example is given in the manual.
190 4. metapost now writes a %%HiReSBoundingBox comment
191 5. The EPS output no longer contains actual spaces within PostScript
192 strings as for example output by label("a space"), but their
193 octal escape (\040) instead.
194 6. The EPS output now also has a %%BeginProlog DSC comment
195 as well as %%EndProlog
196 7. The comments in the Web source have been changed to point out
197 that on modern machines, acquiring the random seed has actually
198 become a system-dependant operation (a granularity of whole seconds
199 is not small enough on new machines).
200 8. The 'newer' command now accepts more than 2 arguments, testing
201 each of the files in turn.
203 ----------------------------------------------------------------------
204 Bugfixes in version 0.9:
205 ----------------------------------------------------------------------
206 1. Documentation improvements: all known errata and typos have been
207 removed, better explanations of e.g. dash patterns and dotlabel have
208 been provided, and a number of omissions has been rectified.
209 2. The BoundingBox was not computed correctly when a filldraw command
210 with a noticeable pen size was used at the edge of the picture.
211 3. Paths starting with degenerate constructions like (0,0)--(0,0)--(0,0)
212 could overflow memory.
213 4. The PostScript output could accidentally contain 8-bit characters
214 within PostScript strings in previous versions because a test was
215 shared between terminal printing and PostScript printing.
216 5. A bug has been found in the assignment of serial numbers to independant
217 variables in metafont 2.71828. This bug affected MP as well, and the
218 same patch has been applied.
219 6. The turningnumber was sometimes wrong in unexpected ways. The new
220 implementation is still sometimes wrong (when there are strange path
221 segments involved), but in a much more predictable way: the new code
222 always draws straight lines between the actual points, and calculates
223 the turningnumber based on that path instead of the actual path. The
224 effect is that cusps and loops within segments are now completely
225 ignored. A more thorough fix of turningnumber is planned for the
227 7. There was an 'off by one' error in dvitomp wrt. the interpretation
229 8. mpto uses a new TeX macro for the generation of labels, making it
230 more robust wrt. strange user code within the actual label text.
231 9. A missing colon in boxes.mp has been added
232 10. A missing save in mfplain.mp has been added
233 11. The generisize in boxes.mp has been fixed so that it now accepts [[ as
234 a valid variable name
236 ----------------------------------------------------------------------
238 ----------------------------------------------------------------------
239 The only change was to fix the code for transforming a picture that
240 contains a filldraw. Version 0.64 introduced a bug that caused an
241 inappropriate memory reference in that case.
243 ----------------------------------------------------------------------
244 What is new in Version 0.64:
245 ----------------------------------------------------------------------
246 1. A new primitive command closefrom filename closes a readfrom file
247 so that subsequent calls to readfrom with that file name will go back
248 to the beginning of the file.
249 2. The ^^ notation for unprintable characters is now used only when printing
250 on the terminal or the log file. Internal computations and the write
251 command are all 8-bit clean. (This is partly due to material in mp.ch
252 that changes the initialization of the xchr array. Without these
253 system-dependent changes, the write command would map all non-ascii
254 characters to spaces.)
255 3. Arithmetic overflow during a comparison such as 20000>-20000 is now
256 ignored. This avoids extraneous error message when using the graph.mp
258 4. Transformations with negative determinants now work properly on pictures
259 drawn with polygonal pens.
260 5. When the readfrom operator is applied to a file that does not exist,
261 an attempt to close a non-open file could cause problems in some
262 implementations. This has now been fixed.
263 6. Using draw picture_expression withpen where the picture_expression
264 was a scaled picture containing dashed lines, the dash lengths would
265 change. This bug has been fixed.
266 7. The dashpart operator could return an invalid picture or a picture that
267 is not properly scaled. This has also been fixed.
268 8. The |char_base| variable could become negative when using fonts that
269 do not start at character 0. There was also bad Pascal code in function
270 b_open_in. This has all been fixed.
271 9. Dvitomp has been fixed to avoid a font data structure problem that
272 could cause some characters to come out in the wrong font when you
273 mix virtual and non-virtual fonts.
274 10. Dvitomp now correctly prints font names when there is a checksum
275 mismatch, and it aborts instead of just printing an error if a tfm
277 11. In plain.mp, the drawdblarrow macro now uses filldraw so that it works
278 better with large pen sizes.
280 ----------------------------------------------------------------------
282 ----------------------------------------------------------------------
283 When prologues is negative, the output files use full precision for
284 coordinates in "%%BoundingBox" comments. In btex..etex blocks,
285 "number too large" and "invalid character" errors are suppressed.
286 The result of btex..etex is now guaranteed to be in a setbounds path
287 so that a for...within iteration will always treat it as a unit.
289 There are also some obscure bug fixes involving string compaction when
290 scanning a file name or when mp is compiled in debug mode. Some possible
291 identifier name conflicts and range check errors have also been fixed.
294 ----------------------------------------------------------------------
296 ----------------------------------------------------------------------
297 This version fixes an obscure bug that could cause certain perfectly valid
298 strings to be printed as "???" or " NONEXISTENT". It also includes a minor
299 fix to the PATHEXPAND code that prevents running out of file descriptors.
302 ----------------------------------------------------------------------
303 What is new in Version 0.63:
304 ----------------------------------------------------------------------
305 1. Backslashes in the PostScript output are rendered correctly. They used
306 to come out as (\) instead of (\\).
307 2. Recycling an independent variable should no longer cause spurious overflows.
308 (This bug was recently found in mf.web.)
309 3. Pythagorean addition should now be faster in certain trivial cases.
310 4. Rotating text by arbitrary angles should no longer cause bad PostScript
311 output. The problem was that arguments to "fshow" could be inaccurate.
312 5. Obscure bugs inherited from mf.web are now fixed. These involve
313 balancing parentheses showing on the terminal, reporting the correct
314 line number in case of buffer overflow, and removing spurious reference
315 counts that could effect end-of-job statistics.
316 6. Fonts with ec=255 should no longer cause mp's PostScript output routines
318 7. When mp's string mechanism was heavily used, file names could occaisonally
319 be printed on the terminal and log file as "(?)". This has been fixed.
320 8. Setting PATHEXPAND in site.h causes mp, dvitomp and dmp to understand "//"
321 in path variables as "search multiple levels of subdirectories". This is
322 for compatibility with recent versions of the Web2c TeX distribution.
323 9. A typo in mpware/makempx and mpware/troffmpx has been fixed. Previous
324 versions of these scripts would not run on some systems.
325 10. Data files *.d have been added to the doc directory. These are used by
326 doc/mpgraph.mp which generates figures for "Drawing Graphs with MetaPost".
327 11. Typos in mpintro.tex and mp.web's TeX material have been fixed.
328 12. Files examples.mp, mpintro.tex and mpintro.bib have moved from mplib to
330 13. The author's email address now appears in the README file.
333 ----------------------------------------------------------------------
334 Macros added to the mplib directory between Versions 0.50 and 0.62:
335 ----------------------------------------------------------------------
336 rboxes.mp is a slightly more general version of boxes.mp
337 TEX.mp provides a way of running tex dynamically instead of as a pre-processor
338 graph.mp, format.mp, and sarith.mp are documented in doc/mpgraph.ps
339 (This is the same as ftp://netlib.att.com/netlib/att/cs/cstr/164.ps.Z)
340 marith.mp, string.mp, texnum.mp, and troffnum.mp are low-level packages
341 used by graph.mp, format.mp, and sarith.mp.
344 ----------------------------------------------------------------------
345 Other minor bug fixes subsequent to Version 0.60
346 ----------------------------------------------------------------------
347 1. plain.mp has been fixed so that the x**y works properly when x<0 and y is
349 2. Programs mptotex.c and mptotr.c which extract btex..etex material have been
350 fixed so they work properly with input files that do not end with a newline
352 3. Program dmp.c which handles troff output from btex..etex blocks has been
353 modified to avoid outputting any non-ASCII characters that the C function
355 4. Program dmp.c no longer gets troff graphics specials confused with text.
356 This seldom matters because btex..etex blocks are unlikely to contain
358 5. Pictures containing clipped subpictures could come out with some colors
359 in the subpicture wrong.
360 6. Colors in PostSript output were not being restricted to the standard 0..1
362 7. Transforming a path or a pen should no longer generate extraneous overflow
363 errors in certain unusual situations.
364 8. Drawing with a degenerate 2-vertex polygonal pen such as penrazor should
365 no longer cause an infinite loop in certain unusual situations.
366 9. There were some bugs in the mfplain macros. (These macros are designed
367 to similate plain METAFONT.) The drawing and filling macros now apply
368 currenttransform to the path but not the pen rather than vice versa.
369 The predefined modes now set o_correction to 1.0.
370 10. For security reasons, mp can no longer read or write files whose names
374 ----------------------------------------------------------------------
375 Changes to the MetaPost language between Version 0.50 and Version 0.60
376 ----------------------------------------------------------------------
377 1. New operator `readfrom <filename>' and new command
378 `write <string expression> to <filename>' do file I/O. Plain defines
379 a special string EOF that readfrom returns to indicate end-of-file
380 and write..to understands as well.
381 2. New iteration type `for p within <picture expression>: <loop text> endfor'
382 iterates through the interior components of the picture. An `interior
383 component' is a single pen stroke, filled outline, or piece of typeset
384 text. A part of the picture enclosed in a clipping or setbounds path
385 also counts as an interior component. If the whole picture is enclosed
386 in such a path, the for..within iteration looks inside. Note that a
387 picture generated by btex..etex is enclosed in a setbounds path.
388 3. The length operator now applies to pictures. It returns the number of
390 4. New boolean operators stroked, filled, textual, clipped, bounded test
391 the first component of a picture. A picture enclosed in a clipping or
392 setbounds path counts as a single component.
393 5. Part extraction operators now work for pictures. Standard operators
394 redpart, greenpart, bluepart apply to the color of the first component
395 and xpart, ypart, xxpart, xypart, yxpart, yypart extract parts of the
396 tranformation that has been applied to a text component. If `textual p'
397 is false, the transform components are all zero; if `clipped p' or
398 `bounded p' is true, the color parts are all zero. Additional operators
399 fontpart, textpart, pathpart, penpart, dashpart extract other information
400 from the first component of a picture. They all return null values when
401 the first component has the wrong type: fontpart and textpart return
402 null strings; pathpart returns the path (0,0); penpart returns nullpen;
403 and dashpart returns nullpicture.
404 6. The construction `dashed nullpicture' is now a no-op. It used to be
406 7. The clip and setbounds statements used to ignore operations on empty
407 pictures. Now they do not.
408 8. Structuring comments in the PostScript output are now based on EPSF-3.0
409 as described in the 2nd Edition of the PostScript Reference Manual.
410 When prologues is 0, some structuring comments are included but the
411 output is not flagged a `conforming document'. Previous versions of
412 MetaPost behaved similarly but used slightly different structuring
414 9. When warningcheck is 0, numeric tokens and results from the hex and
415 oct operators can be as large as 32767.99998. The old limit of about
416 4096 applies only when warningcheck is positive.
417 10. Various optimizations should make the output a little more compact.
418 11. For PostScript engines that obey the scan-conversion rules documented
419 in the 2nd edition PostScript Language Reference Manual, hrules and
420 vrules in btex..etex blocks should now come out to exactly the right
421 number of pixels. The change affects all pen strokes drawn in MetaPost
422 It is implemented via PostScripts dtransform and idtransform operators.
423 12. A bug involving setbounds and MetaPost's corner operators has been fixed.
424 13. Degenerate elliptical pens no longer cause PostScript to divide by zero.
425 14. Fixed a very obscure bug involving readstring and end-of-file.
426 15. String compaction statistics are now printed correctly when the job
427 terminates with tracingstats positive.
431 ----------------------------------------------------------------------
432 Changes to the source files between Version 0.50 and Version 0.60
433 ----------------------------------------------------------------------
435 CHANGES to ./README.MP
436 The installation instructions should now be clearer. They also explain
437 how to cope with verious versions of WEB2C.
440 I removed unused entries and clarified instructions in commentary material.
441 Confusing comments about possibly merging it with the WEB2C version of site.h
442 were removed--I think such merging is a bad idea.
444 CHANGES TO ./Makefile, mp/Makefile, mpware/Makefile:
445 Improved default settings, simplified the `install' recipe,
446 fixed a few missing depencies, portability problems, etc.
449 mp/mp.defines, mpware/mpware.defines, mpware/dvitompext.c
450 TO mp/mp.def, mpware/mpware.def, mpware/dvimpext.c
451 (The names also changed in the Makefiles and convert scripts)
453 CHANGES TO mp/mp.web, mp/mp.ch, mp/mp.def, mp/mpext.c:
454 Lots of new features were added as noted above. The only new system-
455 dependencies are for `readfrom' and `write...to'.
456 The change file now increases max_read_files; it doesn't bother with
457 max_write_files, but perhaps it should. There is a new change entitled
458 "Path selector for..readfrom file". From the web2C sources I borrowed
459 a change "`logname' is declared in <unistd.h> in some systems". I also
460 added a PASCAL-like eof() routine to mpext, removed a change entitled
461 "avoid using eof() in read_psname_table" and added a new change
462 "[48.1199] `eof'...[in read_mem_file]".
464 Reorganization of math routines in the mp directory:
465 I moved the floating-point math routines from mpext.c to mpath.c. A
466 C-language version of the standard math routines was moved from mpmath.c
467 to a new file pmath.c for use in mathtest only. This required chages to
468 mathtest.c and time.c (also used only for mathtest). The point of all
469 this is that there is now just one copy of the floating-point math routines
470 and it is used for mathtest and (optionally) for mp itself.
472 Routines in doc and mp/trapdir:
473 The output was updated to Version 0.60. Another test file mptrap.mp
474 tests new features. There have also been minor updates to the manual,
475 although the new features for Version 0.60 are not included yet.
477 CHANGES to macros in mplib:
478 A minor change to boxes.mp should make it more robust. Changed default
479 setting of tracinglostchars in mfplain.mp and plain.mp. Added a string
480 constant EOF to plain.mp for use with readfrom and write..to.
481 Changed mproof.tex to make it more portable as suggested by Knuth.
483 CHANGES to mpware/dvitomp.web, mpware/dvitomp.ch:
484 The web file was changed to output rules as horizontal or vertical
485 penstrokes with butt endcaps. This also affected dvitomp.ch. Also in
486 dvitomp.ch, put terminal output on stdout instead of stderr and require
487 the output file to be given on the command line.
489 CHANGES to mpware/makempx, mpware/troffmpx:
490 Added comments explaining what path names need fixing. Portability improvements
491 and dvitomp's output change affect makempx only.
493 CHANGES to mpware/mptotex.c mpware/mptotr.c mpware/testex.err mpware/testex.mp:
494 Ignore an initial newline in the TeX (or troff) material to avoid generating
495 a blank line in the output file. The test file now covers this case.
497 CHANGE to mpware/newer.c
498 Minor changes to make it compile in strict ANSI/POSIX environments.