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.
Since 2.16
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. Since 2.16