CTRL+C/KeyboardInterrupt in editline not working properly on macOS REPL
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- Python
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Description
Bug report
With the following in ~/.editrc:
bind "^R" em-inc-search-prev
Pressing CTRL+R inside the macOS-bundled python (/usr/bin/python3, which is compiled against editline) to enter editline history, and then pressing CTRL+C does not properly remove "bck" and does not write KeyboardInterrupt until CTRL+C is pressed two more times for a total of three times.
In other words, inside an editline history search, CTRL+C needs to be sent three times to get back to the normal REPL state.
This video may help with understanding the issue: https://github.com/Homebrew/homebrew-core/issues/118869#issuecomment-1365364374
Your environment
- CPython versions tested on: 3.9.6
- Operating system and architecture: macOS Monterey 12.6.1 / M1 / arm64
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the issue in the macOS-bundled /usr/bin/python3 REPL with the stated ~/.editrc binding, then trace the editline history-search and CTRL+C handling entry points. Done means one CTRL+C exits the history search cleanly and writes KeyboardInterrupt instead of requiring three presses.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- cli, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100