CMDLIST         ::=     COMMAND

                |       CMDLIST [ && PIPELINE ]...

                |       CMDLIST [ || PIPELINE ]...

                |       CMDLIST [ ; PIPELINE ]...

                |       CMDLIST & [ PIPELINE & ]...

                |       ( CMDLIST )

                |       { CMDLIST ; }

                |       FUNCTIONDEF

FUNCTIONDEF     ::=     function IDENT { CMDLIST; }

                |       IDENT () { CMDLIST; }

COMMAND         ::=     if CMDLIST; then CMDLIST;

                        [ elif CMDLIST; then CMDLIST; ]...

                        [ else CMDLIST; ] fi

                |       case WORD in [ PATTERN ) CMDLIST ;; ]... esac

                |       for IDENT [ in WORD... ] ; do CMDLIST; done

                |       select IDENT [ in WORD... ] ; do CMDLIST; done

                |       while CMDLIST; do CMDLIST; done

                |       until CMDLIST; do CMDLIST; done

                |       when WHENARGS { CMDLIST; }

                |       (( EXPRESSION ))

                |       time PIPELINE

                |       IDENT=VALUE... COMMAND

                |       FUNCTIONCALL

                |       BUILTIN

                |       UNIXCMD