On 2020-05-30, lacygoill wrote:
> Describe the bug
>
> We can't map a key to C-s; it makes Vim freeze.
>
> To Reproduce
>
> Start Vim with this shell command:
>
> vim -Nu NONE +'nno <c-s> :echo "hit ctrl-s"<cr>'
>
> Press C-s: nothing happens, and Vim freezes until you press C-q.
>
> Expected behavior
>
> hit ctrl-s is echo'ed on the command-line, and Vim doesn't freeze.
>
> Environment
>
> • Vim version: 8.2 Included patches: 1-855
> • OS: Ubuntu 16.04.6 LTS
> • Terminal: XTerm(322)
>
> Additional context
>
> To avoid this pitfall, I have this line in my ~/.zshrc:
>
> stty -ixon
>
> It has always worked until the commit d6cd5ff. The latter has probably
> introduced a regression.
As far as I can tell, this is expected behavior. Search the help
for Ctrl-S and Ctrl-Q and you'll find notes that these are both used
for flow control.
:helpgrep \cctrl.[sq]
I've had the following in my ~/.bashrc for years to avoid
fat-fingering Ctrl-S while using Vim and wondering what happened,
and also to enable forward searching in emacs-mode readline
interfaces.
stty stop undef
I've left Ctrl-Q alone, just in case. -ixon would have worked as
well.
Regards,
Gary
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