[PATCH] gitweb: fix esc_param

[Giuseppe Bilotta <giuseppe.bilotta@gmail.com>]

The custom CGI escaping done in esc_param failed to escape UTF-8
properly. Fix by using CGI::escape on each sequence of matched
characters instead of sprintf()ing a custom escaping for each byte.

Additionally, the space -> + escape was being escaped due to greedy
matching on the first substitution. Fix by adding space to the
list of characters not handled on the first substitution.

Finally, remove an unnecessary escaping of the + sign.
---
 gitweb/gitweb.perl |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

The issues with this routine were exposed by Stephen's
"author as search link" patch. This should fix them.

Since the idea of esc_param is to replicate CGI::escape except for the /
character (if I read the comment correclty), a possible alternative
would be to just use CGI::escape on the whole string and then undo the
escaping for the / character.

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 6237865..6593e5c 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -1115,8 +1115,7 @@ sub to_utf8 {
 # correct, but quoted slashes look too horrible in bookmarks
 sub esc_param {
 	my $str = shift;
-	$str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
-	$str =~ s/\+/%2B/g;
+	$str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
 	$str =~ s/ /\+/g;
 	return $str;
 }
-- 
1.6.3.rc1.192.gdbfcb