How to search in vim for a pattern that is NOT case sensitive

file searchvim

I occasionally search through files in vim or less using / or ? but as far as I can tell, the search patterns are case sensitive.

So for example, /foo won't find the same things that /FOO will. Is there an way way to make it less strict? How can I search in vim or less for a pattern that is NOT case sensitive?

Best Answer

In vi or vim you can ignore case by :set ic, and all subsequent searches will consider the setting until you reset it by :set noic. In less there are options -i and -I to ignore case.

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There isn't a native feature of :s that does this as far as I know, but if you're willing to install add-ons, you could look at Michael Geddes' keepcase plugin.

Replace using VIM, reuse part of the search pattern

\0 is the whole match. To use only part of it you need to set it like this and use \1

.s/(\([0-9]*\))/{\1}/

More detailed instruction you can find here or in vim help.

Best Answer

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Case-preserving search and replace in vim

Replace using VIM, reuse part of the search pattern

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