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Improve output of dvi debug parsing.#29828
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To test, run e.g.```pythonfrom pylab import *set_loglevel("debug")figtext(.5, .5, r"gff\textwon$\frac12$", usetex=True)show()```Grab the path of the dvi file that appears last in the log, then run```bashpython -mmatplotlib.dviread /path/to/dvi```Prior to this patch, the output was```=== new page === (w: 1668654, h: 553676, d: 225994)font: 'cmss10'scale: 0.625xyglyphchrw(glyphs)9830401441792103g3276811310721144179211.382295font: 'tcss1000'scale: 0.625xyglyphchrw(glyphs)16930161441792142.618800font: 'cmr7'scale: 0.4375xyglyphchrw(glyphs)2390459118375649126123523904591667786502261235xyhw(boxes)2390459129105826213261235```With this patch, the output is```=== NEW PAGE === (w: 1668654, h: 553676, d: 225994)--- GLYPHS ---font: cmss10 (scale: 0.625) at /usr/local/texlive/2025/texmf-dist/fonts/type1/public/amsfonts/cm/cmss10.pfb x y glyph chr w 983040 1441792 103 g 327681 1310721 1441792 11 ff 382295font: tcss1000 (scale: 0.625) at /usr/local/texlive/2025/texmf-dist/fonts/type1/public/cm-super/sfss1000.pfb x y glyph chr w 1693016 1441792 142 ₩ 618800font: cmr7 (scale: 0.4375) at /usr/local/texlive/2025/texmf-dist/fonts/type1/public/amsfonts/cm/cmr7.pfb x y glyph chr w 2390459 1183756 49 1 261235 2390459 1667786 50 2 261235--- BOXES --- x y h w 2390459 1291058 26213 261235```Most importantly, glyphs are now resolved to their unicoderepresentation (essentially by resolving the glyph name, similarly tothe process described in Text.glyph_name_or_index), whereas many complexglyphs were just output as "." before. Furthermore, full font paths areprinted, and the output is slightly better aligned.These improvements will be more significant with the future support for{xe,lua}tex, which can load a much wider variety of glyphs.timhoffm approved these changesMar 29, 2025
dc05767 intomatplotlib:main 44 checks passed
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Again, mostly maintenance work in preparation for#29807.
To test, run e.g.
Grab the path of the dvi file that appears last in the log, then run
Prior to this patch, the output was
With this patch, the output is
Most importantly, glyphs are now resolved to their unicode representation (essentially by resolving the glyph name, similarly to the process described in Text.glyph_name_or_index), whereas many complex glyphs were just output as "." before. Furthermore, full font paths are printed, and the output is slightly better aligned.
These improvements will be more significant with the future support for {xe,lua}tex, which can load a much wider variety of glyphs.
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