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Title: Reject leading dashes in webbrowser.open() · Issue #143930 · python/cpython · GitHub

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Description: Linked PRs gh-143931

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Reject leading dashes in webbrowser.open()https://patch-diff.githubusercontent.com/python/cpython/issues/143930#top
stdlibStandard Library Python modules in the Lib/ directoryhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22stdlib%22
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on Jan 16, 2026https://github.com/python/cpython/issues/143930#issue-3823056840
gh-143930: Reject leading dashes in webbrowser URLs #143931https://github.com/python/cpython/pull/143931
stdlibStandard Library Python modules in the Lib/ directoryhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22stdlib%22
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