Disallow \ in output_base in the plot directive

asmeurer · asmeurer · commit 7f56c947f8b0 · 2025-06-06T11:26:48.000-06:00
diff --git a/lib/matplotlib/sphinxext/plot_directive.py b/lib/matplotlib/sphinxext/plot_directive.py
@@ -638,7 +638,7 @@ def _parse_srcset(entries):
 def check_output_base_name(env, output_base):
     docname = env.docname
 
-    if '.' in output_base or '/' in output_base:
+    if '.' in output_base or '/' in output_base or '\\' in output_base:
         raise PlotError(
             f"The image-basename '{output_base}' is invalid. "
             f"It must not contain dots or slashes.")
