git grep: Add "-z/--null" option as in GNU's grep.

diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index 388d4925e6bc4bacb708f75437e9aaa216fcb9cc..f18d33e00b7166104a200fbeaa854fb911273931 100644 (file)
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -116,6 +116,7 @@ The placeholders are:
 - '%cr': committer date, relative
 - '%ct': committer date, UNIX timestamp
 - '%ci': committer date, ISO 8601 format
+- '%d': ref names, like the --decorate option of linkgit:git-log[1]
 - '%e': encoding
 - '%s': subject
 - '%b': body