Merge pull request #5640 from notmatthancock/master

tacaswell · tacaswell · commit 082302203e6f · 2015-12-23T12:02:59.000-05:00
Warning message prior to fc-list command
diff --git a/lib/matplotlib/font_manager.py b/lib/matplotlib/font_manager.py
@@ -270,6 +270,7 @@ def get_fontconfig_fonts(fontext='ttf'):
 
     fontfiles = {}
     try:
+        warnings.warn('Matplotlib is building the font cache using fc-list. This may take a moment.')
         pipe = subprocess.Popen(['fc-list', '--format=%{file}\\n'],
                                 stdout=subprocess.PIPE,
                                 stderr=subprocess.PIPE)
