parse-optional ( options command-line -- command-line' )

Vocabulary

command-line.parser.private

Inputs

options	an object
command-line	an object

Outputs

command-line'

an object

Definition

USING: kernel namespaces sequences splitting ;

IN: command-line.parser.private

:: parse-optional ( options command-line -- command-line' )
    command-line unclip [ 45 = ] trim-head "no-" ?head
    [ options find-option ] dip
    [ f swap ] [ [ option-value ] keep ] if option-variable set
    ;