Unescapes a whole escaped string.
If any of the characters in illegal_characters or the character zero appears as an escaped character in escaped_string
then that is an error and null will be returned. This is useful it you want to avoid
for instance having a slash being expanded in an escaped path element, which might confuse pathname handling.
| escaped_string |
an escaped string to be unescaped. |
| illegal_characters |
a string of illegal characters not to be allowed, or null. |
|
an unescaped version of |