[vim/vim] Control arrow keys don't move word per word when used with alacritty (Issue #9254)

Gaëtan

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Dec 2, 2021, 11:03:43 AM12/2/21

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Steps to reproduce

Install alacritty
Install vim
Run vim in alacritty
Put random content into it
Try to use arrow + Left key or arrow + Right key
it deletes lines instead of moving to left or right word

Expected behaviour

moving to left or right word

Operating system

Ubuntu 20.04.3

Version of Vim

8.1-2269

Logs and stack traces

No response

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lacygoill

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Dec 2, 2021, 12:59:06 PM12/2/21

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What's TERM?

Try this:

" Enable modified arrow keys, see  :help xterm-modifier-keys
execute "silent! set <xUp>=\<Esc>[@;*A"
execute "silent! set <xDown>=\<Esc>[@;*B"
execute "silent! set <xRight>=\<Esc>[@;*C"
execute "silent! set <xLeft>=\<Esc>[@;*D"

See :help xterm-modifier-keys.

Gaëtan

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Dec 2, 2021, 1:02:44 PM12/2/21

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What's TERM?

❯ echo $TERM

alacritty

FYI this below works but feels like a workaround

map <ESC>[1;5A <C-Up>

map <ESC>[1;5B <C-Down>

map <ESC>[1;5C <C-Right>

map <ESC>[1;5D <C-Left>

imap <ESC>[1;5A <C-Up>

imap <ESC>[1;5B <C-Down>

imap <ESC>[1;5C <C-Right>

imap <ESC>[1;5D <C-Left>

Try this:

" Enable modified arrow keys, see  :help xterm-modifier-keys

execute "silent! set <xUp>=\<Esc>[@;*A"

execute "silent! set <xDown>=\<Esc>[@;*B"

execute "silent! set <xRight>=\<Esc>[@;*C"

execute "silent! set <xLeft>=\<Esc>[@;*D"

See :help xterm-modifier-keys.

this doesn't fix it

lacygoill

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Dec 2, 2021, 1:11:34 PM12/2/21

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this doesn't fix it

Try to set 'ttymouse' to sgr, and try to reproduce with no config (and on master).

This works for me:

$ TERM=alacritty vim -Nu NONE +'execute "silent! set <xUp>=\<Esc>[@;*A"' +'nnoremap <C-Up> :echomsg "C-Up"<CR>' +'set ttymouse=sgr'

Pressing <C-Up> causes Vim to print C-Up on the command-line.

Gaëtan

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Dec 3, 2021, 5:54:41 AM12/3/21

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I moved my .vimrc and .vim folder, git clone vim repo, compiled it so i'm on default configuration. I ran

❯ cat test

ewihfgoiweh fbhguasihfui fugwqefghuo fuqgwhefgh9o

❯ TERM=alacritty ./vim -Nu NONE +'execute "silent! set <xUp>=\<Esc>[@;*A"' +'nnoremap <C-Up> :echomsg "C-Up"<CR>' +'set ttymouse=sgr' test

And control C-Left or C-Right doesn't move to the next/previous word but it doesn't delete lines like it was doing before

lacygoill

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Dec 3, 2021, 1:35:29 PM12/3/21

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And control C-Left or C-Right doesn't move to the next/previous word

My command was only meant to test <C-Up>. It did not set <xLeft> nor <xRight>, which are necessary for <C-Left> or <C-Right> to work.

A recent patch (8.2.3727) has fixed an issue which should help you. Could you make another test on master? And use this snippet:

" Enable modified arrow keys, see  :help xterm-modifier-keys
execute "set <xUp>=\<Esc>[@;*A"
execute "set <xDown>=\<Esc>[@;*B"
execute "set <xRight>=\<Esc>[@;*C"
execute "set <xLeft>=\<Esc>[@;*D"

Yes, it's the same one that I posted earlier. At the time I posted it, it didn't work for you because of an issue which was fixed in 8.2.3727. Now, it should work. If it doesn't work, post the output of :set! termcap.

Gaëtan

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Dec 3, 2021, 2:00:01 PM12/3/21

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And control C-Left or C-Right doesn't move to the next/previous word

My command was only meant to test <C-Up>. It did not set <xLeft> nor <xRight>, which are necessary for <C-Left> or <C-Right> to work.

Sorry, I didn't pay attention to the command 🤦

A recent patch (8.2.3727) has fixed an issue which should help you. Could you make another test on master? And use this snippet:
" Enable modified arrow keys, see  :help xterm-modifier-keys

execute "set <xUp>=\<Esc>[@;*A"

execute "set <xDown>=\<Esc>[@;*B"

execute "set <xRight>=\<Esc>[@;*C"

execute "set <xLeft>=\<Esc>[@;*D"

I compiled, and i'm running VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Dec 3 2021 19:45:48) Included patches: 1-3729 without .vimrc except the snippet above, and not .vim (no plugins). Ran ./vim test and it fixed the issue! thank you a lot for your time. Now I have to wait Ubuntu pushing 8.2 x)

AFAICT we can close this issue.

Christian Brabandt

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Dec 3, 2021, 2:12:17 PM12/3/21

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Closed #9254.

lacygoill

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Dec 3, 2021, 2:13:46 PM12/3/21

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Now I have to wait Ubuntu pushing 8.2 x)

No you don't have to wait for 8.2. You can fix your issue right now, by setting 'ttymouse' to sgr, and by setting <xUp> & friends:

set ttymouse=sgr
execute "set <xUp>=\<Esc>[@;*A"
execute "set <xDown>=\<Esc>[@;*B"
execute "set <xRight>=\<Esc>[@;*C"
execute "set <xLeft>=\<Esc>[@;*D"

lacygoill

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Dec 3, 2021, 2:15:32 PM12/3/21

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by setting 'ttymouse' to sgr

If that doesn't work, clear <DecMouse> manually:

set <DecMouse>=
execute "set <xUp>=\<Esc>[@;*A"
execute "set <xDown>=\<Esc>[@;*B"
execute "set <xRight>=\<Esc>[@;*C"
execute "set <xLeft>=\<Esc>[@;*D"

If that still doesn't work, again, post the output of :set! termcap.

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