[vim/vim] Garbled output on serial terminals with XON/XOFF flow control (PR #14542)
Anton Sharonov (ant0sha)
Problem: When used terminal with XON/XOFF flow control, vim tries to
still make CTRL-S mapping available, which results in severe
screen corruption, especially on large redraws, and even
spurious inputs
Solution: Disallow CTRL-S mapping if such terminal is recognized.
Don't remove IXON from the bitmask inversion.
closes: #12674 (well, at least CTRL-S mapping is disabled, cannot test vt420 corruption because I do not have such hardware)
When started with TERM=vt420:
TERM=vt420 vim
subsequent
:set termcap
shows t_xon=y
mapping
map <C-S> :echo "abc"<CR>
does nothing (after <C-S> output freezes and subsequent <C-Q>
unfreezes it)
When started with TERM=xterm:
TERM=xterm vim
subsequent
:set termcap
shows t_xon=
mapping
map <C-S> :echo "abc"<CR>
works (after <C-S> one see abc string echo-ed)
You can view, comment on, or merge this pull request online at:
https://github.com/vim/vim/pull/14542
Commit Summary
- ff2ad4b Garbled output on serial terminals with XON/XOFF flow control
File Changes
(4 files)
- M src/optiondefs.h (1)
- M src/os_unix.c (3)
- M src/term.c (2)
- M src/termdefs.h (6)
Patch Links:
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Christian Brabandt
thanks, I have made a few minor changes, mostly documentation and tests.
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Christian Brabandt
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