This command is part of the [TclX] package. : '''lempty''' ''list'' Returns whether ''list'' is an empty list. Equivalent to testing if the [llength] of the list is zero. ====== % package require Tclx 8.4 % lempty "1" 0 % lempty [list "1"] 0 % lempty [list] 1 % lempty [list ""] 0 % lempty [list " "] 0 % lempty " " 1 % lempty "" 1 ====== ---- <> Pure Tcl Equivalent [AMG]: `proc lempty list {expr {![[llength $list]]}}` <> Command | TclX