René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: \\genfrac has bad spacing with (high) custom ruler","articleBody":"### Bug summary\n\nUsing a high horizontal ruler overwrites denominator\n\n### Code for reproduction\n\n```python\nimport matplotlib.pyplot as plt\r\nplt.text(0.5, 0.5, r'$\\genfrac{}{}{10}{}{foo}{bar}$')\r\nplt.draw()\n```\n\n\n### Actual outcome\n\n![image](https://user-images.githubusercontent.com/8114497/148686253-76f63c58-f3c5-4b6c-b3d8-1cccb4563bc4.png)\r\n\n\n### Expected outcome\n\nThis is from LaTeX rendering, but actually not that good either. It seems like the distance is also scaled with the height of the bar.\r\n\r\n![image](https://user-images.githubusercontent.com/8114497/148686276-88fa39c6-e6a8-4b71-b1f0-94bf20ae1cb8.png)\r\n\n\n### Additional information\n\nUsing\r\n```\r\n        vlist = Vlist([cnum,                      # numerator\r\n                       Vbox(0, thickness * 2.0),  # space\r\n                       Hrule(state, rule),        # rule\r\n                       Vbox(0, thickness * 2.0 + 2 * rule),  # space\r\n                       cden                       # denominator\r\n                       ])\r\n```\r\nin `_genfrac` (that is, adding 2 * rule to the second spacer) gives\r\n\r\n![image](https://user-images.githubusercontent.com/8114497/148686385-29a36104-8d13-40b0-8b6f-84c20792647d.png)\r\n\r\nWhich I guess it at least somewhat consistent and no overwrite. The question is if one can/want to do better?\r\n\r\nI can include this is #22171 if it seems like a reasonable solution.\n\n### Operating system\n\nWindows 10\n\n### Matplotlib Version\n\n3.6.0.dev1270+g46d2a1e.d20220109\n\n### Matplotlib Backend\n\nmodule://matplotlib_inline.backend_inline\n\n### Python version\n\n3.9.9\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\ngit checkout","author":{"url":"https://github.com/oscargus","@type":"Person","name":"oscargus"},"datePublished":"2022-01-09T14:25:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/22172/matplotlib/issues/22172"}