René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`tarfile.TarFile.add()` does not normalize symlink targets on Windows","articleBody":"# Bug report\n\n### Bug description:\n\nIn #138309 `tarfile.TarFile.extract()` has been modified to replace `/` in symlink targets with `\\` on Windows. I believe that the opposite normalization should be done in `tarfile.TarFile.add()`.\n\nI have noticed this in a downstream project that extracts tar archives generated by `git dist`, adds some additional files, and recreates the archive. When the git repository contains a symbolic link, the repacked archive contains symbolic link with the wrong path separators.\n\nBefore #138309, the extracted symbolic links on Windows were not functional (I believe) but the repacked archive had the same content as the original one. After #138309, this is not true anymore.\n\n### CPython versions tested on:\n\n3.15\n\n### Operating systems tested on:\n\nWindows\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-151671\n* gh-153517\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/dnicolodi","@type":"Person","name":"dnicolodi"},"datePublished":"2026-06-18T18:41:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/151669/cpython/issues/151669"}