Unable to hide signcolumn on first run of command-t.

[codybuell]

Trying to figure out a way to set signcolumn=no in the command-t window. I have signcolumn=yes set by default and am using an autocommand to disable if the new window is command-t. This does the trick but only after the first time command-t is opened. If I broaden the autocommand to not check for filetype then it will work on the first command-t call but all new buffers / windows have the signcolumn disabled too. Have also tried adding setlocal signcolumn=no in ftplugin/command-t.vim with no luck. Any ideas?

" autocommand in question, works on second opening of command-t window
au BufWinEnter * if &l:filetype ==? 'command-t' | setlocal signcolumn=no nonu nornu | endif
" this also has the same effect, doesn't work on first call of CommandT
au BufWinEnter * if commandt#CheckBuffer(bufnr('%')) | setlocal signcolumn=no nonu nornu |endif

Version info

~ $ cd .vim/pack/bundle/opt/command-t; git log --format="%H" -n 1
ea7a889bda2849ba87fc12053bf6dd14467d7b72
~ $
~ $ nvim --version
NVIM v0.5.0-dev+nightly-406-gc1fbc2ddf
Build type: Release
LuaJIT 2.1.0-beta3
Compilation: clang -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DNDEBUG -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fno-common -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -DMIN_LOG_LEVEL=3 -I/tmp/neovim-20210301-48181-11rfrks/build/config -I/tmp/neovim-20210301-48181-11rfrks/src -I/usr/local/include -I/usr/local/opt/luv/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/usr/local/opt/gettext/include -I/tmp/neovim-20210301-48181-11rfrks/build/src/nvim/auto -I/tmp/neovim-20210301-48181-11rfrks/build/include
Compiled by [email protected]

Features: +acl +iconv +tui
See ":help feature-compile"

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "/usr/local/Cellar/neovim/HEAD-c1fbc2d_1/share/nvim"

Run :checkhealth for more info
~ $
~ $ tmux -V
tmux 3.2-rc2
~ $
~ $ ruby -v
ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin20]
~ $
~ $ nvim +CheckHealth

health#nvim#check
========================================================================
## Configuration
  - OK: no issues found

## Performance
  - OK: Build type: Release

## Remote Plugins
  - OK: Up to date

## terminal
  - INFO: key_backspace (kbs) terminfo entry: key_backspace=^H
  - INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~
  - INFO: $TERM_PROGRAM='tmux'
  - INFO: $COLORTERM='truecolor'

## tmux
  - OK: escape-time: 0
  - INFO: Checking stuff
  - OK: focus-events: on
  - INFO: $TERM: tmux-256color

health#provider#check
========================================================================
## Clipboard (optional)
  - OK: Clipboard tool found: pbcopy

## Python 2 provider (optional)
  - INFO: `g:python_host_prog` is not set.  Searching for python2 in the environment.
  - INFO: Executable: /usr/bin/python2
  - INFO: Python version: 2.7.16
  - INFO: pynvim version: 0.4.3
  - OK: Latest pynvim is installed.

## Python 3 provider (optional)
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - INFO: Multiple python3 executables found.  Set `g:python3_host_prog` to avoid surprises.
  - INFO: Executable: /usr/local/bin/python3
  - INFO: Other python executable: /usr/bin/python3
  - INFO: Python version: 3.9.2
  - INFO: pynvim version: 0.4.3
  - OK: Latest pynvim is installed.

## Python virtualenv
  - OK: no $VIRTUAL_ENV

## Ruby provider (optional)
  - INFO: Ruby: ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin20]
  - INFO: Host: /usr/local/bin/neovim-ruby-host
  - OK: Latest "neovim" gem is installed: 0.8.1

## Node.js provider (optional)
  - INFO: Node.js: v12.18.4
  - INFO: Nvim node.js host: /Users/pbuell/.nvm/versions/node/v12.18.4/lib/node_modules/neovim/bin/cli.js
  - OK: Latest "neovim" npm/yarn package is installed: 4.9.0

## Perl provider (optional)
  - ERROR: perl provider error:
    - ADVICE:
      - "Neovim::Ext" cpan module is not installed

Minimal config from screen capture

" ~/.devimrc.vim
set rtp-=~/.vim
set rtp-=~/.vim/after
set rtp-=~/.config/nvim
set rtp-=~/.config/nvim/after
set rtp^=$VIMDEVPATH
set rtp+=$VIMDEVPATH/after
set vif=NONE
set sdf=NONE
set gcr=
filetype plugin indent on
syntax enable
set signcolumn=yes nu rnu
au BufWinEnter * if &l:filetype ==? 'command-t' | setlocal signcolumn=no nonu nornu | endif

VIMDEVPATH=~/.vim/pack/bundle/opt/command-t nvim -Nu ~/.devimrc.vim 

[shivanshukmr]

Try using this:

augroup commandt
  autocmd!
  autocmd User CommandTWillShowMatchListing set signcolumn=no
  autocmd User CommandTDidHideMatchListing set signcolumn=yes
augroup END

[codybuell]

@shivanshukmr That works but has the side effect of toggling the main window's sign column.

[wincent]

I think it should probably be off in the match window by default, like we already do for a bunch of other settings (see also Settings). It's a window-local setting, so I don't think it should be too problematic to add to the list.

[wincent]

@codybuell: can you try out this change and see if it works for you?

It works in my very light testing, but I am a signcolumn=auto user, so I am not a heavy user of that feature.

[codybuell]

@wincent that works, thanks!