Georg Brandl avatar Georg Brandl committed ee2d5b1

Add a comment explaining part of visit_image.

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         if node.has_key('scale'):
+            # Try to figure out image height and width.  Docutils does that too,
+            # but it tries the final file name, which does not necessarily exist
+            # yet at the time the HTML file is written.
             if Image and not (node.has_key('width')
                               and node.has_key('height')):
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