git-log --author and --committer are not left-anchored by default

I know that I'd prefer a rule where

	"--author=^Junio"

would result in the grep-pattern being "^author Junio", but without the
initial '^' it would be "^author .*Junio".

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/revision.c b/revision.c
index 26dd41873484fdeed9d2bd4825c1a03e2b2553bc..bca122961e0fded660f34e65659d93f00c91bdfc 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -677,6 +677,7 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
 static void add_header_grep(struct rev_info *revs, const char *field, const char *pattern)
 {
        char *pat;
+       const char *prefix;
        int patlen, fldlen;
 
        if (!revs->header_filter) {
@@ -689,8 +690,13 @@ static void add_header_grep(struct rev_info *revs, const char *field, const char
 
        fldlen = strlen(field);
        patlen = strlen(pattern);
-       pat = xmalloc(patlen + fldlen + 3);
-       sprintf(pat, "^%s %s", field, pattern);
+       pat = xmalloc(patlen + fldlen + 10);
+       prefix = ".*";
+       if (*pattern == '^') {
+               prefix = "";
+               pattern++;
+       }
+       sprintf(pat, "^%s %s%s", field, prefix, pattern);
        append_grep_pattern(revs->header_filter, pat,
                            "command line", 0, GREP_PATTERN);
 }