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Commitb9c87f1

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jkseppanQuLogic
andcommitted
Type-1 subsetting
This reduces pdf file sizes when usetex is active, at the cost ofsome complexity in the code. We implement a charstring bytecodeinterpreter to keep track of subroutine calls in font programs.Give dviread.DviFont a fake filename attribute and a get_fontmapmethod for character tracking.In backend_pdf.py, refactor _get_subsetted_psname so it calls a method_get_subset_prefix, and reuse that to create tags for Type-1 fonts.Mark the methods static since they don't use anything from the instance.Recommend merging to main to give people time to test this, not toa 3.10 point release.Closes#127.Co-Authored-By: Elliott Sales de Andrade <quantum.analyst@gmail.com>
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Type 1 fonts are now subsetted in PDF output
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When using the usetex feature with the PDF backend, Type 1 fonts are embedded
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in the PDF output. These fonts used to be embedded in full, but they are now
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subsetted to only include the glyphs that are actually used in the figure.

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