oscardelben / git-diff-grep Goto Github PK

Add usage if user forgets parameters.

$ gdg "+ 10"
/bin/git-diff-grep: line 57: [: +: unary operator expected
Usage: git-diff-grep [OPTIONS]
-c INTEGER Set number of commits (default: 100)

The script seems to always be diffing against my checkout which means that if I do a grep against the past 100 commits and 50 commits into the history it finds one with a match, it will continue finding that same match and diff for the next 49 commits. I changed instances of git diff to git diff-tree -p to remedy this. I also changed the initial search to grep -q "^[+-].*$query.*" which ensures that source context doesn't cause a commit to match.

I feel like I may be missing something obvious or this is a platform-specific issue because the script flat doesn't do what it claims on my system. If these are actual bugs and not platform quirks I will be happy to create a pull request for the changes.