Function returns 1 if start state was resolved or 0 otherwise. Concanate argument strings and return result as a new string. Get value of environment variable str . Returns an empty string if variable var is undefined. Count the length of argument strings or lists.
Function never returns.
Convert arguments to strings and print them to the output. Argument source can be string or list. Convert string string to a new regular expression. Returns the resulting string. Like regsub but replace all matches of regular expression regexp from string string with string subst .