Previous: getopt-long Reference, Up: getopt-long
option-refSearch options for a command line option named key and return its value, if found. If the option has no value, but was given, return
#t. If the option was not given, return default. options must be the result of a call togetopt-long.
option-ref always succeeds, either by returning the requested
option value from the command line, or the default value.
The special key '() can be used to get a list of all
non-option arguments.