gitweb: Do not use esc_html in esc_path

Do not use esc_html in esc_path subroutine to avoid double quoting;
expand esc_html body (except quoting) in esc_path.

Move esc_path before quot_cec and quot_upr. Add some comments.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

gitweb/gitweb.perl

@@ -585,7 +585,21 @@ sub esc_html ($;%) {
 	return $str;
 }
 
-# Make control characterss "printable".
+# quote control characters and escape filename to HTML
+sub esc_path {
+	my $str = shift;
+	my %opts = @_;
+
+	$str = to_utf8($str);
+	$str = escapeHTML($str);
+	if ($opts{'-nbsp'}) {
+		$str =~ s/ / /g;
+	}
+	$str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
+	return $str;
+}
+
+# Make control characters "printable", using character escape codes (CEC)
 sub quot_cec {
 	my $cntrl = shift;
 	my %es = ( # character escape codes, aka escape sequences
@@ -605,22 +619,14 @@ sub quot_cec {
 	return "<span class=\"cntrl\">$chr</span>";
 }
 
-# Alternatively use unicode control pictures codepoints.
+# Alternatively use unicode control pictures codepoints,
+# Unicode "printable representation" (PR)
 sub quot_upr {
 	my $cntrl = shift;
 	my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 	return "<span class=\"cntrl\">$chr</span>";
 }
 
-# quote control characters and escape filename to HTML
-sub esc_path {
-	my $str = shift;
-
-	$str = esc_html($str);
-	$str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
-	return $str;
-}
-
 # git may return quoted and escaped filenames
 sub unquote {
 	my $str = shift;