Use git grep over grep

[tpwo]

One less dependency is always a nice thing, and it seems that the git grep command features everything that I need right now.

[tpwo]

Also, -I flag should be added, so binary files (i.e. images attached to zettels) are not listed.

[tpwo]

I've found another good side of this change. With this simple syntax in .gitattributes, it is possible to mark any file tracked by Git as binary:

*.svg binary

I just used it to hide .svg results while grepping in my ZK repo.

It also hides such files in Git diffs some might come handy in some situations. More details here.