Merge branch 'jk/mailinfo-iterative-unquote-comment'

The code to parse the From e-mail header has been updated to avoid
recursion.

* jk/mailinfo-iterative-unquote-comment:
  mailinfo: avoid recursion when unquoting From headers
  t5100: make rfc822 comment test more careful

mailinfo.c

@@ -59,6 +59,7 @@ static void parse_bogus_from(struct mailinfo *mi, const struct strbuf *line)
 static const char *unquote_comment(struct strbuf *outbuf, const char *in)
 {
 	int take_next_literally = 0;
+	int depth = 1;
 
 	strbuf_addch(outbuf, '(');
 
@@ -72,11 +73,14 @@ static const char *unquote_comment(struct strbuf *outbuf, const char *in)
 				take_next_literally = 1;
 				continue;
 			case '(':
-				in = unquote_comment(outbuf, in);
+				strbuf_addch(outbuf, '(');
+				depth++;
 				continue;
 			case ')':
 				strbuf_addch(outbuf, ')');
-				return in;
+				if (!--depth)
+					return in;
+				continue;
 			}
 		}
 

t/t5100/comment.expect

@@ -1,4 +1,4 @@
-Author: A U Thor (this is (really) a comment (honestly))
+Author: (this is (really) a "comment" (honestly)) A U Thor
 Email: [email protected]
 Subject: testing comments
 Date: Sun, 25 May 2008 00:38:18 -0700

t/t5100/comment.in

@@ -1,5 +1,5 @@
 From 1234567890123456789012345678901234567890 Mon Sep 17 00:00:00 2001
-From: "A U Thor" <[email protected]> (this is \(really\) a comment (honestly))
+From: (this is \(really\) a "comment" (honestly)) "A U Thor" <[email protected]>
 Date: Sun, 25 May 2008 00:38:18 -0700
 Subject: [PATCH] testing comments