René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Some Unicode format specifiers are incorrect","articleBody":"# Bug report\n\n### Bug description:\n\nInspired by #146578, I wrote a [checker](https://github.com/sunmy2019/cpython/tree/py-format-checker/Tools/py-format-checker) to check all unicode format strings.\n\nThere are 2 kinds of errors.\n1) There are ~8 real mistakes.\n2) Comply with C99 for va_list: https://en.cppreference.com/w/c/variadic/va_arg.html\nMost of the changes are `%d` \u003c-\u003e `%ld` for `int` and `Py_ssize_t`.\n\nI opened an draft PR https://github.com/python/cpython/pull/146616 containing only the fixes to display what could be changed. We can discuss and cherry pick some fixes in that PR.\n\n\n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\nLinux\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-146616\n* gh-146617\n* gh-146618\n* gh-146619\n* gh-146620\n* gh-146634\n* gh-146647\n* gh-146648\n* gh-146649\n* gh-146650\n* gh-146651\n* gh-146652\n* gh-146653\n* gh-146654\n* gh-146655\n* gh-146658\n* gh-147704\n* gh-147705\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/sunmy2019","@type":"Person","name":"sunmy2019"},"datePublished":"2026-03-29T23:23:20.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/146615/cpython/issues/146615"}