return 0
				}
			} else {
				return 0
			}
		}
	}
	if {![catch [list set type [image type ${cmd}]]]} {
	if {![catch {set type [image type $cmd]}]} {
		switch -- ${type} {
			photo {
				set result [PhotoObj ${text} ${start} ${end} ${line} ${pos}]
				return 1
			}
			default {
				# let the fallback completers do the job.

			set alias [uplevel [info level] \
			subst [lindex [lindex [QuoteQuotes ${line}] 0] 0]]

			# make `alias' a fully qualified name.
			# this can raise an error, if alias is
			# no valid command.
			#
			if {[catch [list set alias [namespace origin $alias]]]} {
			if {[catch {set alias [namespace origin $alias]}]} {
				return ""
			}

			# strip leading ::'s.
			#
			regsub -all {^::} $alias {} alias
			set namespc [namespace qualifiers $alias]

# proc complete(regexp) {text start end line pos mod} {
#     We're not on windoze here ...
# }

proc complete(regsub) {text start end line pos mod} {
	set prev [PreviousWord ${start} ${line}]
	if {[llength ${prev}] && "--" != $prev && \
		("-" == [string index ${prev} 0] || 1 == ${pos)}} {
		("-" == [string index ${prev} 0] || 1 == ${pos})} {
		set cmds [RemoveUsedOptions ${line} {
			-all -nocase --} {--}]
		if {[llength ${cmds}]} {
			return [string trim [CompleteFromList ${text} ${cmds}]]
		}
	} else {
		set virtual_pos [expr ${pos} - [FirstNonOption ${line}]]

	return [CompleteFromList ${text} [RemoveUsedOptions ${line} {
		-nobackslashes -nocommands -novariables <string>}]]
}

proc complete(switch) {text start end line pos mod} {
	set prev [PreviousWord ${start} ${line}]
	if {[llength ${prev}] && "--" != ${prev} && \
		("-" == [string index ${prev} 0] || 1 == ${pos)}} {
		("-" == [string index ${prev} 0] || 1 == ${pos})} {
		set cmds [RemoveUsedOptions ${line} {
			-exact -glob -regexp --} {--}]
		if {[llength ${cmds}]} {
			return [string trim [CompleteFromList ${text} ${cmds}]]
		}
	} else {
		set virtual_pos [expr ${pos} - [FirstNonOption ${line}]]