Re: [PATCH 2/n] gitweb: Use '&iquot;' instead of '?' in esc_path

Jakub Narebski wrote:

3. Use Character Escape Codes (CEC), using alphabetic and octal
   backslash sequences like those used in C. Probably need to escape
   backslash (quoting character) too. Has the advantage of being widely
   understood in POSIX world. Has the disadvantage of need for escape
   sequence table/hash. Has the advantage that it works for all
   characters - simple octal backslash sequence if they have no special
   escape sequence.

Here is example code for this:

	sub esc_path {
		my $str = shift;

		sub quot {
			my $seq = shift;
			my %es = (
				"\t" => '\t', # tab            (HT, TAB)
				"\n" => '\n', # newline        (NL)
				"\r" => '\r', # return         (CR)
				"\f" => '\f', # form feed      (FF)
				"\b" => '\b', # backspace      (BS)
				"\a" => '\a', # alarm (bell)   (BEL)
				"\e" => '\e', # escape        (ESC)
				"\013" => '\v', # vertical tab (VT)
			);

			if (exists $es{seq}) {
				return $es{$seq};
			}
			return sprintf("\\%03o", ord($seq));
		}
		
		$str = esc_html($str);
		$str =~ s/([[:cntrl:]])/'<span class="cntrl">' . quot($1) . '</span>'/eg;
		return $str;
	}

-- 
Jakub Narebski