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I'm a pro user of vim, however, somehow I don't seem to have definitively figured out the use of time based undo, or maybe I don't really like it. Is there a way I can undo a deletion caused by Ctrl-w W3I will be really grateful for the help.

Thanks.

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If you're referring to undoing ^W deletes made as part of an insert operation, I'm with you in wanting to know. I guess you could remap it to something that saves the value in a script- or buffer-local variable, but I don't think there's a way to do this built into vim. But I'm confused by your mention of time-based undo, ie g- and g+, which AFAIK is not related to the use of i_^W. – intuited May 29 '10 at 22:56
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up vote 2 down vote

The tip title refers to Ctrl+U which is similar but not quite the same as Ctrl+W. However the same method can be used for both.

Recover from accidental Ctrl+U.

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up vote 1 down vote accepted 
:inoremap <C-w> <C-g>u<C-w>

u sets undo point to the current point. And then C-w does the deletion work.

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