Mappings for conceallevel=1 toggling

[Hotschke]

Another toggling addition for unimpaired:

diff --git a/plugin/unimpaired.vim b/plugin/unimpaired.vim
index f2c90bb..b7b6d6c 100644
--- a/plugin/unimpaired.vim
+++ b/plugin/unimpaired.vim
@@ -222,6 +222,9 @@ call s:option_map('u', 'cursorcolumn', 'setlocal')
 nnoremap [od :diffthis<CR>
 nnoremap ]od :diffoff<CR>
 nnoremap cod :<C-R>=&diff ? 'diffoff' : 'diffthis'<CR><CR>
+nnoremap [oe :set conceallevel=1<CR>
+nnoremap ]oe :set conceallevel=0<CR>
+nnoremap coe :set <C-R>=&conceallevel ? 'conceallevel=0' : 'conceallevel=1'<CR><CR>
 call s:option_map('h', 'hlsearch', 'set')
 call s:option_map('i', 'ignorecase', 'set')
 call s:option_map('l', 'list', 'setlocal')

Any chance this get merged in? Feel free to pick a different character instead of e.

The mappings could be changed to cycle through the levels.

[tpope]

Feels to me like 2 would be the more appropriate choice? That's the value that most accurately implements the syntax highlighter's intentions.

[Hotschke]

Yes, I agree with you: If a syntax highlighter does not define a conceal character, it should be understood as being done on purpose.

I actually toggle it for tex files. By default it is on: IMHO equations become more readable. But when I edit matrices, I don't want the concealment to have aligned matrix columns.

[tpope]

I could see making coe toggle 2 but [oe and ]oe decrement and increment.

[Hotschke]

I have changed the diff:

diff --git a/doc/unimpaired.txt b/doc/unimpaired.txt
index 3d97242..f99df77 100644
--- a/doc/unimpaired.txt
+++ b/doc/unimpaired.txt
@@ -76,6 +76,7 @@ On    Off     Toggle  Option
 *[ob*  *]ob*   *cob*   'background' (dark is off, light is on)
 *[oc*  *]oc*   *coc*   'cursorline'
 *[od*  *]od*   *cod*   'diff' (actually |:diffthis| / |:diffoff|)
+*[oe*  *]oe*   *coe*   'conceallevel' (actually [oe and ]oe cycle)
 *[oh*  *]oh*   *coh*   'hlsearch'
 *[oi*  *]oi*   *coi*   'ignorecase'
 *[ol*  *]ol*   *col*   'list'
diff --git a/plugin/unimpaired.vim b/plugin/unimpaired.vim
index f2c90bb..e2d1388 100644
--- a/plugin/unimpaired.vim
+++ b/plugin/unimpaired.vim
@@ -222,6 +222,11 @@ call s:option_map('u', 'cursorcolumn', 'setlocal')
 nnoremap [od :diffthis<CR>
 nnoremap ]od :diffoff<CR>
 nnoremap cod :<C-R>=&diff ? 'diffoff' : 'diffthis'<CR><CR>
+" Cycle through 'conceallevel' (local to window)
+nnoremap [oe :setlocal <C-R>='conceallevel='.(&conceallevel+1)%4<CR><CR>
+nnoremap ]oe :setlocal <C-R>='conceallevel='.float2nr(&conceallevel-1-(4*floor((&conceallevel-1)/4.0)))<CR><CR>
+" Toggle between default conceallevel 2 and 0 (local to window)
+nnoremap coe :setlocal <C-R>=&conceallevel ? 'conceallevel=0' : 'conceallevel=2'<CR><CR>
 call s:option_map('h', 'hlsearch', 'set')
 call s:option_map('i', 'ignorecase', 'set')
 call s:option_map('l', 'list', 'setlocal')

[chreekat]

I also used 2. My bikeshed, however, uses , with the obvious mnemonic.

[o ]o co

[dylnmc]

I was looking for exactly this; can we push this into master?

Is it already there, and I missed it?

Just added this to my vimrc:

nnoremap =oe :setlocal conceallevel=<c-r>=&conceallevel == 0 ? '2' : '0'<cr><cr>
nnoremap coe :setlocal conceallevel=<c-r>=&conceallevel == 0 ? '2' : '0'<cr><cr>
nnoremap [oe :setlocal conceallevel=<c-r>=&conceallevel > 0 ? &conceallevel - 1 : 0<cr><cr>
nnoremap ]oe :setlocal conceallevel=<c-r>=&conceallevel < 2 ? &conceallevel + 1 : 2<cr><cr>

Huh ... this actually works well for the two biggest use cases; ie,

• toggling from &conceallevel == 0 to &conceallevel == 1 and vice versa:

  • ]oe and [oe (resp.)

• toggling from &conceallevel == 0 to &conceallevel == 2 and vice versa:

  • coe (or =oe) and (again) coe (or =oe) (... resp. 😄)