Simplify the file name as much as possible without changing the meaning. Shortcuts (on MS-Windows) or symbolic links (on Unix) are not resolved. If the first path component in {filename} designates the current directory, this will be valid for the result as well. A trailing path separator is not removed either. Example: simplify("./dir/.././/file/") == "./file/" Note: The combination "dir/.." is only removed if "dir" is a searchable directory or does not exist. On Unix, it is also removed when "dir" is a symbolic link within the same directory. In order to resolve all the involved symbolic links before simplifying the path name, use |resolve()|.