Adds sw according to sopts, lopts and nlopts.
sw
OptionParser::Switch instance to be added.
sopts
Short style option list.
lopts
Long style option list.
nlopts
Negated long style options list.
Inserts switch at the head of the list, and associates short, long and negated long options. Arguments are:
switch
OptionParser::Switch instance to be inserted.
short_opts
List of short style options.
long_opts
List of long style options.
nolong_opts
List of long style options with “no-” prefix.
prepend(switch, short_opts, long_opts, nolong_opts)
Appends switch at the tail of the list, and associates short, long and negated long options. Arguments are:
switch
OptionParser::Switch instance to be inserted.
short_opts
List of short style options.
long_opts
List of long style options.
nolong_opts
List of long style options with “no-” prefix.
append(switch, short_opts, long_opts, nolong_opts)
Searches list id for opt and the optional patterns for completion pat. If icase is true, the search is case insensitive. The result is returned or yielded if a block is given. If it isn’t found, nil is returned.
Completion for hash key.
Default stringizing method to emit standard error message.
Raises an exception if any arguments given.
Raises an exception if argument is not present.
Parses argument if given, or uses default value.
Returns nil if argument is not present or begins with ‘-’.