René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: Infinite loop when there is single double quote in matplotlibrc","articleBody":"### Bug summary\r\n\r\nThis code https://github.com/timhoffm/matplotlib/blob/7c378a8f3f30ce57c874a851f3af8af58f1ffdf6/lib/matplotlib/cbook/__init__.py#L403-L415 on the main branch (not released yet) falls into an infinite loop when there is only one double quotation because when `s.find('\"', quote_pos + 1) == -1` `pos == 0`\r\n\r\ncontext:\r\n- https://github.com/matplotlib/matplotlib/pull/22589\r\n- https://github.com/matplotlib/matplotlib/issues/19288\r\n\r\n\r\n### Code for reproduction\r\n\r\n```python\r\nfrom pathlib import Path\r\n\r\nimport matplotlib.pyplot as plt\r\n\r\nPath(\"./test.mplstyle\").write_text('grid.color: \"aa')\r\nplt.style.use(\"./test.mplstyle\")\r\n```\r\n\r\n\r\n### Actual outcome\r\n\r\nThe program doesn't exit.\r\n\r\n### Expected outcome\r\n\r\nShow an error or set `'\"aa'`.\r\n\r\n### Additional information\r\n\r\n_No response_\r\n\r\n### Operating system\r\n\r\n_No response_\r\n\r\n### Matplotlib Version\r\n\r\n3.6.0.dev1816+gb9ae51ca8c.d20220311\r\n\r\n### Matplotlib Backend\r\n\r\n_No response_\r\n\r\n### Python version\r\n\r\nPython 3.10.0\r\n\r\n### Jupyter version\r\n\r\n_No response_\r\n\r\n### Installation\r\n\r\n_No response_","author":{"url":"https://github.com/yy0931","@type":"Person","name":"yy0931"},"datePublished":"2022-03-11T13:29:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/22636/matplotlib/issues/22636"}