Vi and Vim Asked on August 31, 2021
I wrote a function to show some special characters with red color:
function! ShowChar()
set list
set listchars=tab:→ ,space:·,nbsp:␣,eol:¶
highlight SpecialKey ctermfg=blue ctermbg=red guifg=blue guibg=red
endfunction
map <f5> :call ShowChar()<CR>
When to press f5, the characters — tab, space, nbsp, eol will be shown with red color, now I want to design a new function key f6, when to press f6 after pressing f5, all the special characters will be shown as previous status, not with red color.
Should I write a new function which called by f6?
set listchars=tab:→ ,space:·,nbsp:␣,eol:¶
highlight SpecialKey ctermfg=blue ctermbg=red guifg=blue guibg=red
nnoremap <f5> :set list!<CR>
Answered by showkey on August 31, 2021
I assume you use termguicolors:
if has("termguicolors")
set termguicolors
endif
You can use this to store the colors of the SpecialKey group each time your colorscheme changes:
augroup SaveSpecialKeyColors
au!
au ColorScheme,VimEnter *
let g:specialkey_fg = synIDattr(hlID('SpecialKey'), "fg#") |
let g:specialkey_bg = synIDattr(hlID('SpecialKey'), "bg#")
augroup end
And a function to toggle:
set listchars=tab:→ ,space:·,nbsp:␣,eol:¶
function! SpecialKeyToggle()
if &list == ""
set list
highlight SpecialKey guifg=blue guibg=red
else
exe "highlight SpecialKey guifg= " g:specialkey_bg "guibg= " g:specialkey_bg
endif
endfunction
nnoremap <f6> :call SpecialKeyToggle()<CR>
You could have a mapping to toggle list (stole this one from tpope's unimpaired):
nnoremap yol setlocal list!
nnoremap is good practice: you only need this function in normal mode (n), and don't want it to be recursive (nore).
Answered by Biggybi on August 31, 2021
function! SpecialKeyWarning()
set list
set listchars=tab:→ ,space:·,nbsp:␣,eol:¶
highlight SpecialKey ctermfg=blue ctermbg=red guifg=blue guibg=red
endfunction
map <f5> :call SpecialKeyWarning()<CR>
function! SpecialKeyNormal()
set nolist
endfunction
map <f6> :call SpecialKeyNormal()<CR>
Answered by showkey on August 31, 2021
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