Turn off highlight on CursorMoved and InsertEnter without remapping (doesn't break search operator pending mode)

Question

Turn off highlight on CursorMoved and InsertEnter without remapping (doesn't break search operator pending mode)

purpleP opened this issue 8 years ago · 6 comments

Thanks to guys from neovim I've found a way to automatically turn off search highlight when it's no longer needed (for me).

Notice how I check if the cursor is on something that have been searched previously. In your plugin you're using if expand("<cword>") =~ @/ which wouldn't work if someone searched for more than one word.

So in case someone is wondering this would turn off highlight if you've moved cursor with anything except next/previous match motion or if you've entered insert mode (in operator pending mode also, yey!)

noremap <expr> <Plug>(StopHL) execute('nohlsearch')[-1]
noremap! <expr> <Plug>(StopHL) execute('nohlsearch')[-1]

fu! HlSearch()
    let s:pos = match(getline('.'), @/, col('.') - 1) + 1
    if s:pos != col('.')
        call StopHL()
    endif
endfu

fu! StopHL()
    if !v:hlsearch || mode() isnot 'n'
        return
    else
        sil call feedkeys("\<Plug>(StopHL)", 'm')
    endif
endfu

augroup SearchHighlight
au!
    au CursorMoved * call HlSearch()
    au InsertEnter * call StopHL()
augroup end

Answer 1 · 2016-12-24T09:30:52.000Z

This works amazingly well and is a lot cleaner than what I did. Can I use it as starting point for a new branch?

Answer 2 · 2016-12-24T10:07:54.000Z

Please take a look at branch "purplep": https://github.com/romainl/vim-cool/tree/purplep.

Answer 3 · 2016-12-25T20:36:14.000Z

@romainl Yes, of course you can. I've leared about OptionSet event from you code. Cool.

Answer 4 · 2016-12-26T20:09:18.000Z

I merged the "purplep" branch into "master". Thanks a lot!

Answer 5 · 2021-07-15T13:34:31.000Z

Thanks to guys from neovim I've found a way to automatically turn off search highlight when it's no longer needed (for me).

Notice how I check if the cursor is on something that have been searched previously. In your plugin you're using if expand("<cword>") =~ @/ which wouldn't work if someone searched for more than one word.

So in case someone is wondering this would turn off highlight if you've moved cursor with anything except next/previous match motion or if you've entered insert mode (in operator pending mode also, yey!)
noremap <expr> <Plug>(StopHL) execute('nohlsearch')[-1]
noremap! <expr> <Plug>(StopHL) execute('nohlsearch')[-1]

fu! HlSearch()
    let s:pos = match(getline('.'), @/, col('.') - 1) + 1
    if s:pos != col('.')
        call StopHL()
    endif
endfu

fu! StopHL()
    if !v:hlsearch || mode() isnot 'n'
        return
    else
        sil call feedkeys("\<Plug>(StopHL)", 'm')
    endif
endfu

augroup SearchHighlight
au!
    au CursorMoved * call HlSearch()
    au InsertEnter * call StopHL()
augroup end

nice.. thanks a lot @purpleP

Answer 6 · 2021-07-21T16:56:45.000Z

Thanks to guys from neovim I've found a way to automatically turn off search highlight when it's no longer needed (for me).
Notice how I check if the cursor is on something that have been searched previously. In your plugin you're using if expand("<cword>") =~ @/ which wouldn't work if someone searched for more than one word.
So in case someone is wondering this would turn off highlight if you've moved cursor with anything except next/previous match motion or if you've entered insert mode (in operator pending mode also, yey!)
noremap <expr> <Plug>(StopHL) execute('nohlsearch')[-1]
noremap! <expr> <Plug>(StopHL) execute('nohlsearch')[-1]

fu! HlSearch()
    let s:pos = match(getline('.'), @/, col('.') - 1) + 1
    if s:pos != col('.')
        call StopHL()
    endif
endfu

fu! StopHL()
    if !v:hlsearch || mode() isnot 'n'
        return
    else
        sil call feedkeys("\<Plug>(StopHL)", 'm')
    endif
endfu

augroup SearchHighlight
au!
    au CursorMoved * call HlSearch()
    au InsertEnter * call StopHL()
augroup end
nice.. thanks a lot @purpleP

🙏