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Support pathological tmpdirs in TexManager. #21414

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Oct 21, 2021
Merged

Support pathological tmpdirs in TexManager. #21414

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9 changes: 6 additions & 3 deletions lib/matplotlib/texmanager.py
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Original file line number Diff line number Diff line change
Expand Up @@ -258,16 +258,19 @@ def make_dvi(self, tex, fontsize):
basefile = self.get_basefile(tex, fontsize)
dvifile = '%s.dvi' % basefile
if not os.path.exists(dvifile):
texfile = self.make_tex(tex, fontsize)
texfile = Path(self.make_tex(tex, fontsize))
# Generate the dvi in a temporary directory to avoid race
# conditions e.g. if multiple processes try to process the same tex
# string at the same time. Having tmpdir be a subdirectory of the
# final output dir ensures that they are on the same filesystem,
# and thus replace() works atomically.
# and thus replace() works atomically. It also allows referring to
# the texfile with a relative path (for pathological MPLCONFIGDIRs,
# the absolute path may contain characters (e.g. ~) that TeX does
# not support.)
with TemporaryDirectory(dir=Path(dvifile).parent) as tmpdir:
self._run_checked_subprocess(
["latex", "-interaction=nonstopmode", "--halt-on-error",
texfile], tex, cwd=tmpdir)
f"../{texfile.name}"], tex, cwd=tmpdir)
(Path(tmpdir) / Path(dvifile).name).replace(dvifile)
return dvifile

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