[GH-ISSUE #1458] option output=logfile mangles screen display for ncurses programs (ie. mutt) #980

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opened 2026-05-05 07:15:18 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 07:15:18 -06:00

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Originally created by @Boruch-Baum on GitHub (Aug 11, 2017).
Original GitHub issue: https://github.com/netblue30/firejail/issues/1458

references:
[1] @chiraag-nataraj's comment to issue 1455

For firejail version 0.9.48 in debian, using mutt configured to edit with emacs client, with the command line invocation:

firejail --debug  --output=~/firejail.log --noblacklist=/usr/bin/emacsclient --noblacklist=/tmp mutt

1] The initial ncurses display in mutt displays partially and mangled.

2] Exiting mutt does not return to a $PS1 prompt until pressing RET.

3] The log file includes a mixture of output from firejail and from what should have been the mutt ncurses display, including control characters.

Originally created by @Boruch-Baum on GitHub (Aug 11, 2017). Original GitHub issue: https://github.com/netblue30/firejail/issues/1458 references: [1] [@chiraag-nataraj's comment to issue 1455](https://github.com/netblue30/firejail/issues/1455#issuecomment-321738549) For firejail version 0.9.48 in debian, using mutt configured to edit with emacs client, with the command line invocation: firejail --debug --output=~/firejail.log --noblacklist=/usr/bin/emacsclient --noblacklist=/tmp mutt 1] The initial ncurses display in mutt displays partially and mangled. 2] Exiting mutt does not return to a $PS1 prompt until pressing RET. 3] The log file includes a mixture of output from firejail and from what should have been the mutt ncurses display, including control characters.

gitea-mirror

2026-05-05 07:15:18 -06:00

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gitea-mirror commented

2026-05-05 07:15:22 -06:00

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@netblue30 commented on GitHub (Aug 13, 2017):

Bug! I was also redirecting stderr to the output file, and this was breaking ncurses screen. Thanks for the bug, I put a fix in git.

@netblue30 commented on GitHub (Aug 13, 2017): Bug! I was also redirecting stderr to the output file, and this was breaking ncurses screen. Thanks for the bug, I put a fix in git.

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Reference: github-starred/firejail#980

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