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@voyeg3r
Last active March 30, 2022 16:14
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" source: https://stackoverflow.com/a/24046914/2571881
let s:comment_map = {
\ "c": '\/\/',
\ "cpp": '\/\/',
\ "go": '\/\/',
\ "java": '\/\/',
\ "javascript": '\/\/',
\ "lua": '--',
\ "scala": '\/\/',
\ "php": '\/\/',
\ "python": '#',
\ "ruby": '#',
\ "rust": '\/\/',
\ "sh": '#',
\ "desktop": '#',
\ "fstab": '#',
\ "conf": '#',
\ "profile": '#',
\ "bashrc": '#',
\ "bash_profile": '#',
\ "mail": '>',
\ "eml": '>',
\ "bat": 'REM',
\ "ahk": ';',
\ "vim": '"',
\ "tex": '%',
\ }
function! ToggleComment()
if has_key(s:comment_map, &filetype)
let comment_leader = s:comment_map[&filetype]
if getline('.') =~ '^\s*$'
" Skip empty line
return
endif
if getline('.') =~ '^\s*' . comment_leader
" Uncomment the line
execute 'silent s/\v\s*\zs' . comment_leader . '\s*\ze//'
else
" Comment the line
execute 'silent s/\v^(\s*)/\1' . comment_leader . ' /'
endif
else
echo "No comment leader found for filetype"
endif
endfunction
nnoremap <Leader>t :call ToggleComment()<CR>
vnoremap <Leader>t :call ToggleComment()<CR>
@dave-kennedy
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dave-kennedy commented Jul 23, 2021

@backermanbd I think I understand your first point. If I have this code:

static int do_something() {
    struct dir* d = malloc(sizeof(*d));

    if (!d) {
        return -ENOMEM;
    }

And I put my cursor on line 3 and do gc}, this is the result:

static int do_something() {
    struct dir* d = malloc(sizeof(*d));

//     if (!d) {
//         return -ENOMEM;
//     }

For comparison, if I put my cursor on on line 4:

static int do_something() {
    struct dir* d = malloc(sizeof(*d));

    // if (!d) {
    //     return -ENOMEM;
    // }

You want it to behave like the second result regardless of whether you had your cursor on line 3 or 4.

If I were you I'd create an issue here: https://github.com/tpope/vim-commentary/issues. Chances are good you're not the only person who finds this behavior irksome. You'll probably get more traction there. Maybe I'll even take a poke at it. Or you can fix it yourself and help everybody. This is the strength of open source software.

As for your second point, try putting this in your .vimrc:

autocmd BufEnter *.c,*.cpp setlocal commentstring=//\ %s

Or create a file under ~/.vim/after/ftplugin/c.vim with these contents:

setlocal commentstring=//\ %s

Make sure it's exactly like that, including the %s at the end.

@anqin
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anqin commented Mar 29, 2022

@backermanbd have you fixed the issue?

I have same problem when I used in CPP files.

To @mizlan The fixing has some bugs

@mizlan
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mizlan commented Mar 29, 2022

What are the bugs?

@anqin
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anqin commented Mar 30, 2022

@mizlan

When uncomment the lines, the indent spaces is dismissed. For example,

static int do_something() {
struct dir* d = malloc(sizeof(*d));

// if (!d) {
// return -ENOMEM;
// }

After uncommented,

static int do_something() {
struct dir* d = malloc(sizeof(*d));

if (!d) {
return -ENOMEM;
}

@mizlan
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mizlan commented Mar 30, 2022

Ah. I never addressed the uncomment portion of the original code in my diff.

Change the uncomment code to:

execute 'silent s/\v\s*\zs' . comment_leader . ' \ze//'

(i.e., change the match-any-whitespace to a match-space regex.

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