Add corner case tests for diff-index and diff-files

diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt
index 71a73354f8cfa960f641d9563ee8af405b4f881f..a97f0557f4aa6cf1d795470d7bbe94ce35abc56a 100644 (file)
--- a/Documentation/git-grep.txt
+++ b/Documentation/git-grep.txt
@@ -78,7 +78,7 @@ OPTIONS
 -l | --files-with-matches | --name-only | -L | --files-without-match::
        Instead of showing every matched line, show only the
        names of files that contain (or do not contain) matches.
-       For better compatability with git-diff, --name-only is a
+       For better compatibility with git-diff, --name-only is a
        synonym for --files-with-matches.
 
 -c | --count::