Vim freezes after Ctrl-S

Question

I have been using neovim for a long time and I have been using Ctrl + s to save and Ctrl + q to quit.

nmap <c-s> :w<CR>
imap <c-s> <Esc>:w<CR>a

nmap <c-q> :q<CR>
imap <c-q> <Esc>:q<CR>

Due to the unexpected behavior of nvim with coc I switched to vim. It's using the same configuration but Ctrl + s freezes the editor and Ctrl + q is required to unfreeze it. I'm using Simple Terminal and it does not freeze for Ctrl + s.

NVIM v0.4.2
VIM - Vi IMproved 8.1

Also, there is no question here. But your terminal is intercepting the ctrl q and ctrl s before vim ever sees them. — Wildcard, Sep 28 '19 at 18:36

score 18 · Accepted Answer · answered Sep 28 '19 at 19:14

18

It is probably your terminal. It looks like it is configured to have flow control enabled. Disable it.

Flow control was used in the old days, when things were slow enough that we could pause a scrolling screen. ctrl-s is pause/scroll-lock, ctrl-q is continue.

answered Sep 28 '19 at 19:14

ctrl-alt-delor

27,993

2

"I'm sorry Dave I'm afraid I can't do that" "Why not, HAL?" "Because you pressed CTRL-S". – David Tonhofer Sep 29 '19 at 12:12
2

Use stty -ixon to disable flow control. See also https://unix.stackexchange.com/a/515257/43878 – Daniel Sep 09 '20 at 18:47

Vim freezes after Ctrl-S

1 Answers1