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

context -- a g:option-context instance to create and initialize
parameter -- an optional string which is displayed in the first line of --help output

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