xdiff: Match GNU diff behaviour when deciding hunk comment worthiness of lines

Petr Baudis · Junio C Hamano · commit 70da769a4607 · 2006-10-25T12:57:33.000-07:00
This removes the '#' and '(' tests and adds a '$' test instead although I have
no idea what it is actually good for - but hey, if that's what GNU diff does...

Pasky only went and did as Junio sayeth.

Signed-off-by: Petr Baudis &lt;pasky@suse.cz&gt;
Signed-off-by: Junio C Hamano &lt;junkio@cox.net&gt;
diff --git a/xdiff/xemit.c b/xdiff/xemit.c
@@ -86,8 +86,7 @@ static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll) {
 		if (len > 0 &&
 		    (isalpha((unsigned char)*rec) || /* identifier? */
 		     *rec == '_' ||	/* also identifier? */
-		     *rec == '(' ||	/* lisp defun? */
-		     *rec == '#')) {	/* #define? */
+		     *rec == '$')) {	/* mysterious GNU diff's invention */
 			if (len > sz)
 				len = sz;
 			while (0 < len && isspace((unsigned char)rec[len - 1]))
