Fix PGF with special character paths.

QuLogic · QuLogic · commit 3431a22ca627 · 2021-01-21T05:44:09.000-05:00
Fixes #17765.
diff --git a/lib/matplotlib/backends/backend_pgf.py b/lib/matplotlib/backends/backend_pgf.py
@@ -50,7 +50,7 @@ def get_fontspec():
             # 1) Forward slashes also work on Windows, so don't mess with
             # backslashes.  2) The dirname needs to include a separator.
             path = pathlib.Path(fm.findfont(family))
-            latex_fontspec.append(r"\%s{%s}[Path=%s]" % (
+            latex_fontspec.append(r"\%s{%s}[Path=\detokenize{%s}]" % (
                 command, path.name, path.parent.as_posix() + "/"))
 
     return "\n".join(latex_fontspec)
