Thank you for teaching me this practical Vim trick. In the past, I usually used
macros to solve similar problems.
However, since I like using the mouse, I just came up with an idea:
I wrote a function and put it into my vimrc:
function! s:ToggleBlockCommentVisual() range
let l:start_line = line("'<")
let l:end_line = line("'>")
if l:start_line > l:end_line
let l:tmp = l:start_line
let l:start_line = l:end_line
let l:end_line = l:tmp
endif
if &filetype ==# 'python'
let l:begin = '"""'
let l:end = '"""'
elseif &filetype ==# 'go'
let l:begin = '/*'
let l:end = '*/'
else
echo "The current file type does not support block comments：" . &filetype
return
endif
let l:prev_line = getline(l:start_line - 1)
let l:next_line = getline(l:end_line + 1)
let l:prev_trim = trim(l:prev_line)
let l:next_trim = trim(l:next_line)
if l:prev_trim ==# l:begin && l:next_trim ==# l:end
call deletebufline(bufnr('%'), l:end_line + 1)
call deletebufline(bufnr('%'), l:start_line - 1)
else
call append(l:end_line, l:end)
call append(l:start_line - 1, l:begin)
endif
endfunction
xnoremap <silent> # :<C-u>call <SID>ToggleBlockCommentVisual()<CR>
Of course, abusing """ code """ is a bad habit of mine—you can change it to
another approach if you like.
After selecting a block of code with the mouse (of course, you need to enable
the mouse with set mouse=a), press Shift + 3 (the # key) to comment that block.
You can also use the same shortcut to uncomment a block that has already been
commented.
--
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