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How can I deltect if there is a file modification in VIM upon exiting (:q)? If there is a file modification Vim echos

E37: No write since last change (add ! to override) 

I want to override this message with a custom message and an action similar to

File modified: Do you wish to save the file? (y)Yes (n)No (c)Cancel

I have modified Vim's behavior to save file on Ctrl-s and quit on Ctrl-w

Now I am looking for a solution if the file is already modified and user is quitting it with Ctrl-w I want Vim to prompt to save.

Here is the content of my .vimrc file:

map <C-S> :w<CR>
imap <C-S> <Esc>:w<CR>i

map <C-w> :q<CR>
imap <C-w> <Esc>:q<CR>
share|improve this question
What about using :confirm quit? – daniel kullmann Aug 2 '12 at 7:46
@danielkullmann Works!! never knew about that. However, how can I map that to Ctrl-w to confirm quit when there is a modification in file? – Ashwin kumar Aug 2 '12 at 7:49
up vote 5 down vote accepted

You could use :confirm quit, e.g.

map <C-w> :confirm quit<CR>

By the way: C-w is a bad choice for a shortcut, because it is used as the start of other shortcuts, e.g. C-w v for splitting vertically. That's why you experience a short delay before the dialog pops open: after you press C-w, vim waits a short time for other keypresses, before it decides that you really just wanted to press C-w.

share|improve this answer
Awesome. and thanks for the tip. will avoid using Ctrl-w.. How about Ctrl-q?? Any thoughts? – Ashwin kumar Aug 2 '12 at 8:00
See :help c_CTRL-Q. Looks fine, if you're using the GUI version of vim, which you seem to do (Ctrl-S is also used for terminal control flow). – daniel kullmann Aug 2 '12 at 11:15

You've already got a specific answer. Here's a generic one:

You can find examples (and complete working packages) of pretty nearly every kind of vim enhancement you can think of at http://www.vim.org/scripts/index.php

share|improve this answer
Thanks for the link. Will surely check it out.. :-) – Ashwin kumar Aug 2 '12 at 8:44

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