gh-125231 register firefox channels as Mozilla controller

[durawat]

Summary

Detect firefox-* browser channels in PATH.

Details

• Scans all directories in $PATH for executables matching firefox-*
• Collects unique channel names (e.g., firefox-dev, firefox-aurora, firefox-beta, firefox-nightly)
• Register them as Mozilla controller

• Issue: webbrowser.open hangs indefinitely when exiting browser defined in BROWSER environment variable #125231

[bedevere-app]

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[python-cla-bot]

All commit authors signed the Contributor License Agreement.

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #32505594 | 📁 Comparing 080f2a9 against main (be9c7cb)

  🔍 Preview build  

3 files changed

± download.html
± library/webbrowser.html
± whatsnew/changelog.html

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.