glib:with-option-group ((group &rest args) &body body)

group -- a g:option-group instance to create and initialize
name -- a string with the name for the option group
description -- a string with a description for this option group to be shown in --help output
help-description -- a string with a description for the --help-name option

The g:with-option-group macro allocates a new g:option-group instance, initializes the option group with the given arguments and executes the body that uses the option group. After execution of the body the allocated memory for the option group is released. See the documentation of the g:option-group-new function for more information about the initialization of the new option group.