I usually find myself when using helm-projectile-grep to narrow my search down to a specific file type.

For example: I do a search for "container" but only want to show the results in the .style files. I haven't been able to find if you can do this with helm-projectile-grep but it does seem like it should be possible.

2 Answers 2


It is possible with the helm-ag package, which passes every "--" prefixed field to ag as CLI arguments.

To filter by file type use its extension as an argument. So calling helm-projectil-ag with:

--style container

will do the trick.

Additional examples:

--hidden search-pattern

Will include hidden files during search for search-pattern

--ignore=*.html container

Will ignore all html files. Note that --ignore accepts glob pattern instead of regexp.


To use helm-ag you should install ag, which is multi-platform, uses perl-like regexp by default and is way faster than grep.

  • this doesnt work with helm-projectile-ag
    – RichieHH
    Aug 23, 2020 at 19:57
  • @RichieHH yes, and I have never stated that.
    – atevm
    Aug 26, 2020 at 12:05

Unlike RichieHH stated in a comment under atevm's answer in 2020, it now do work with helm-projectile-ag too 🎉

For example, I managed to search for a string in all php files with :

stringIsearchFor -G=*.php

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