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Editorial Team
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Asked: 2026-06-05T19:36:42+00:00

In Vim, when I comment a multi-line visual selection using NERDCommenter, the blank lines

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In Vim, when I comment a multi-line visual selection using NERDCommenter, the blank lines in the selection are not commented. In the example below, I select all 5 lines and type “\cl” (for NERDCommenterAlignLeft), but the 3rd line, which is blank, is not commented.

Before:

" Normalize Markdown : Remove Trailing # From Headers
nnoremap <Leader>qq :%s/ \+#\+ *$//gc<CR>

" Normalize Markdown : Remove Trailing Whitespace
nnoremap <Leader>qw :%s/\s\+$//gc<CR>

After:

" " Normalize Markdown : Remove Trailing # From Headers
" nnoremap <Leader>qq :%s/ \+#\+ *$//gc<CR>

" " Normalize Markdown : Remove Trailing Whitespace
" nnoremap <Leader>qw :%s/\s\+$//gc<CR>
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1 Answer

  1. Editorial Team

    This is how it has been implemented in NERDCommenter plugin. If you open the plugin file (NERD_commenter.vim) and look for a function named s:CanCommentLine, you will see that it has the following check:

    " make sure we don't comment lines that are just spaces or tabs or empty.
if theLine =~ "^[ \t]*$"
    return 0
endif

    So, before the plugin goes ahead to comment a line, it checks if it is an empty line. If so, the plugin does not comment it and skips to the next line.

    A quickfix would be to simply remove this part of the code from your plugin file.

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