René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"matplotlib.sphinxext.plot_directive generates incorrect links when using dirhtml builder","articleBody":"When using the `dirhtml` builder in sphinx with the `.. plot::` directive, the generated links are relative to the source file tree not the output, i.e. the source file name become a directory containing index.html, however the relative path generated is based on the location of the source file\r\nhttps://github.com/matplotlib/matplotlib/blob/ae73a46cc46045d7edac52ef3e8876515802f10d/lib/matplotlib/sphinxext/plot_directive.py#L740\r\n\r\nI fixed this locally using the the following hack, however I don't think this is the appropriate solution there should be some way to make the directive use the output path not the input path, which would remove the need for a hack solution. Hence I'm posting this as a issue rather than a patch.\r\n\r\n```python\r\n    if setup.app.builder.name == 'dirhtml':\r\n        subdir = os.path.basename(os.path.splitext(rst_file)[0])\r\n        dest_dir_link = os.path.join(relpath(setup.confdir, os.path.join(rst_dir, subdir)),\r\n                                     source_rel_dir).replace(os.path.sep, '/')\r\n    else:\r\n        dest_dir_link = os.path.join(relpath(setup.confdir, rst_dir),\r\n                                     source_rel_dir).replace(os.path.sep, '/')\r\n```","author":{"url":"https://github.com/glenfletcher","@type":"Person","name":"glenfletcher"},"datePublished":"2019-04-03T04:05:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/13858/matplotlib/issues/13858"}