preg_match() use is overkill in path_is_absolute()
|Reported by:||coffee2code||Owned by:||duck_|
path_is_absolute() utilizes preg_match() to check if the first character of a path string is either of two possibilities. This is way overkill for such a simple case. The alternative I've proposed via the attached patch is more performant and makes the intention of the code clearer (rather than obscured in a regular expression).