How to add/maintain line break at end of file while saving in VIM

Question

This feature is one of the concerns while editing others projects, editors like textmate and sublime I believe add line break for last line, but when I edit end portions of a file with vim and save it I sometimes forget to add the final line break.

So, how do I automate this and make sure files always have at least one new line at the end.

Hmm, I've tested vim and, if open a file and force its writing, last newline is always added. Do you have specific options which prevent vim against this fix? — Netch
– Netch, Commented Jan 5, 2014 at 8:57
@Netch I've checked .vimrc I do not have any such options, I'd like to know how to explicitly tell VIM to add new lines at the end. — Sathish Manohar
– Sathish Manohar, Commented Jan 5, 2014 at 9:46

kTT · Accepted Answer · 2014-01-05 09:46:57Z

5

I don't remember if there is solution for this build in vim. Check below snippet. It will add empty line at the end of file.

function! AddLastLine()
    if getline('$') !~ "^$"
        call append(line('$'), '')
    endif
endfunction

autocmd BufWritePre * call AddLastLine()

answered Jan 5, 2014 at 9:46

kTT

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2 Comments

Sathish Manohar Over a year ago

Works perfect! out of curiosity. the last line autocmd BufWritePre * call AddLastLine() means when saving all kinds of files right? how to customize this further to work only on/excluding specific filetypes. Thanks a ton.

kTT Over a year ago

Use autocmd BufWritePre *.c\|*.cpp\|*.java\|*.py call AddLastLine() but it will works only for specified extensions, you want filetypes so the better way is this autocmd FileType c,cpp,java,python autocmd BufWritePre * call AddLastLine().

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