[PATCHv2 GSOC 01/11] gitweb: fix esc_url

[Pavan Kumar Sunkara <pavan.sss1991@gmail.com>]

The custom CGI escaping done in esc_url 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.

commit 452e225 has missed fixing esc_url.

Signed-off-by: Pavan Kumar Sunkara <pavan.sss1991@gmail.com>
---
 gitweb/gitweb.perl |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 9446376..518328f 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -1322,8 +1322,7 @@ sub esc_param {
 sub esc_url {
 	my $str = shift;
 	return undef unless defined $str;
-	$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;
 }
-- 
1.7.1.455.g8f441