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Comment: src/tclreadline/tclreadline.c src/tclreadline/tclreadlineCompleter.tcl
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Timelines: family | ancestors | descendants | both | trunk
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SHA1: 7e22ff2cc09cfed68a43d93d2a09a46b1b2ca626
User & Date: johannes@zellner.org on 1999-09-18 02:31:19
Other Links: manifest | tags
Context
1999-09-19
10:48
share/vim/ft/tcl_ft.vim src/tclreadline/tclreadlineCompleter.tcl check-in: f06e7a16c7 user: johannes@zellner.org tags: trunk
1999-09-18
02:31
src/tclreadline/tclreadline.c src/tclreadline/tclreadlineCompleter.tcl check-in: 7e22ff2cc0 user: johannes@zellner.org tags: trunk
1999-09-17
16:42
.login .tclshrc tcl_ft.vim vim_ft.vim tclreadlineCompleter.tcl check-in: d67d766fd4 user: johannes@zellner.org tags: trunk
Changes

Modified tclreadline.c from [42d7384f97] to [035d2f38c0].

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 /* ==================================================================

    FILE: "/disk01/home/joze/src/tclreadline/tclreadline.c"
    LAST MODIFICATION: "Thu Sep 16 15:43:29 1999 (joze)"
    (C) 1998, 1999 by Johannes Zellner, <johannes@zellner.org>
    $Id$
    ---

    tclreadline -- gnu readline for tcl
    Copyright (C) 1999  Johannes Zellner




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 /* ==================================================================

    FILE: "/home/joze/src/tclreadline/tclreadline.c"
    LAST MODIFICATION: "Fri Sep 17 23:34:52 1999 (joze)"
    (C) 1998, 1999 by Johannes Zellner, <johannes@zellner.org>
    $Id$
    ---

    tclreadline -- gnu readline for tcl
    Copyright (C) 1999  Johannes Zellner

Modified tclreadlineCompleter.tcl from [1c598840ba] to [e0fb9f8efc].

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# -*- tclsh -*-
# FILE: "/disk01/home/joze/src/tclreadline/tclreadlineCompleter.tcl"
# LAST MODIFICATION: "Fri Sep 17 18:41:10 1999 (joze)"
# (C) 1998, 1999 by Johannes Zellner, <johannes@zellner.org>
# $Id$
# ---
#
# tclreadline -- gnu readline for tcl
# Copyright (C) 1999  Johannes Zellner
#

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# -*- tclsh -*-
# FILE: "/home/joze/src/tclreadline/tclreadlineCompleter.tcl"
# LAST MODIFICATION: "Sat Sep 18 04:27:54 1999 (joze)"
# (C) 1998, 1999 by Johannes Zellner, <johannes@zellner.org>
# $Id$
# ---
#
# tclreadline -- gnu readline for tcl
# Copyright (C) 1999  Johannes Zellner
#
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		}
		if {!$trace} {
			return 0
		}
		if {![winfo exists .tclreadline_trace.text]} {
			toplevel .tclreadline_trace
			text .tclreadline_trace.text \
			-yscrollcommand { tclreadline::TraceReconf }

			scrollbar .tclreadline_trace.scroll \
			-orient vertical \
			-command { .tclreadline_trace.text yview }
			pack .tclreadline_trace.text -side left -expand yes -fill both
			pack .tclreadline_trace.scroll -side right -expand yes -fill y
		} else {
			raise .tclreadline_trace
		}
		return 1
	}







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		}
		if {!$trace} {
			return 0
		}
		if {![winfo exists .tclreadline_trace.text]} {
			toplevel .tclreadline_trace
			text .tclreadline_trace.text \
				-yscrollcommand { tclreadline::TraceReconf } \
				-wrap none
			scrollbar .tclreadline_trace.scroll \
				-orient vertical \
				-command { .tclreadline_trace.text yview }
			pack .tclreadline_trace.text -side left -expand yes -fill both
			pack .tclreadline_trace.scroll -side right -expand yes -fill y
		} else {
			raise .tclreadline_trace
		}
		return 1
	}
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	}
	return [string trim $result]
}

#**
# invoke cmd with a (hopefully) invalid string and
# parse the error message to get an option list.




#
# @param cmd
# @return list of options for cmd






















































































# @date Sep-14-1999
#
proc TrySubCmds {cmd} {
	set trystring ____
	set result ""
	if [catch {set result [eval ${cmd} ${trystring}]} msg] {
		set tcmd [string trim ${cmd}]
		# puts stderr msg=$msg
		if {[regexp {(bad|ambiguous) .*"____": *must *be( .*$)} ${msg} \

			all junk raw]
		} {; # XXX see tclIndexObj.c XXX
			regsub -all -- , ${raw} { } raw







			set len [llength ${raw}]

			set len_2 [expr ${len} - 2]







			for {set i 0} {${i} < ${len}} {incr i} {



				set word [lindex ${raw} ${i}]

				if {"or" != ${word} && ${i} != ${len_2}} {
					lappend result ${word}
				}





















































			}
		} elseif {[regexp "wrong # args: should be \"${tcmd}\(.*\)\"" \
			${msg} all hint]


		} {; # XXX see tclIndexObj.c XXX


			set result [string trim $hint]

		} else {






			# check, if it's a blt error msg ...


























			#

			set msglst [split ${msg} \n]








			foreach line ${msglst} {
				if {[regexp "${tcmd}\[ \t\]\+\(\[^ \t\]*\)\[^:\]*$" \

					${line} all sub]
				} {

					lappend result [list ${sub}]
				}
			}


		}











	}








	return ${result}
}

proc FirstNonOption {line} {
	set expr_pos 1
	foreach word [lrange ${line} 1 end] {; # 0 is the command itself
		if {"-" != [string index ${word} 0]} {
			break







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	}
	return [string trim $result]
}

#**
# invoke cmd with a (hopefully) invalid string and
# parse the error message to get an option list.
# The strings are carefully chosen to match the
# results produced by known tcl routines. It's a
# pity, that not all object commands generate
# standard error messages!
#
# @param   cmd
# @return  list of options for cmd
# @date    Sep-14-1999
#
proc TrySubCmds {text cmd} {

	set trystring ----
	set bla 0

	# try the command with and w/o trystring.
	# Some commands, e.g.
	#     .canvas bind
	# return an error if invoked w/o arguments
	# but not, if invoked with arguments. Breaking
	# the loop is eventually done at the end ...
	#
	for {set str ${trystring}} {1} {set str ""} {

		set code [catch {set result [eval ${cmd} ${str}]} msg]
		set result ""

		if {$code} {
			set tcmd [string trim ${cmd}]
			# puts stderr msg=$msg
			# XXX see
			#         tclIndexObj.c
			#         tkImgPhoto.c
			# XXX
			if {[regexp \
				{(bad|ambiguous|unrecognized) .*"----": *must *be( .*$)} \
				${msg} all junk raw]
			} {
				regsub -all -- , ${raw} { } raw
				set len [llength ${raw}]
				set len_2 [expr ${len} - 2]
				for {set i 0} {${i} < ${len}} {incr i} {
					set word [lindex ${raw} ${i}]
					if {"or" != ${word} && ${i} != ${len_2}} {
						lappend result ${word}
					}
				}
				if {[string length ${result}] && \
					-1 == [string first ${trystring} ${result}]
				} {
					return [TryFromList ${text} ${result}]
				}

			} elseif {[regexp \
				"wrong # args: should be \"?${tcmd}\[^ \t\]*\(.*\[^\"\]\)" \
				${msg} all hint]

			} {

				# XXX see tclIndexObj.c XXX
				if {-1 == [string first ${trystring} ${hint}]} {
					return [DisplayHints [list <[string trim $hint]>]]
				}
			} else {
				# check, if it's a blt error msg ...
				#
				set msglst [split ${msg} \n]
				foreach line ${msglst} {
					if {[regexp "${tcmd}\[ \t\]\+\(\[^ \t\]*\)\[^:\]*$" \
						${line} all sub]
					} {
						lappend result [list ${sub}]
					}
				}
				if {[string length ${result}] && \
					-1 == [string first ${trystring} ${result}]
				} {
					return [TryFromList ${text} ${result}]
				}
			}
		}
		if {"" == ${str}} {
			break
		}
	}
	return ""
}

#**
# try to get options for commands which
# allow `configure' (cget).
# @param command.
# @param optionsT where the table will be stored.
# @return number of options
# @date Sep-14-1999
#
proc OptionTable {cmd optionsT} {
	upvar $optionsT options
	# first we build an option table.
	# We always use `configure' here,
	# because cget will not return the
	# option table.

	#
	if {[catch [list set option_table [eval ${cmd} configure]] msg]} {

		return 0
	}
	foreach optline ${option_table} {
		if {5 != [llength ${optline}]} continue else {
			lappend options(switches) [lindex ${optline} 0]
			lappend options(value)    [lindex ${optline} 4]
		}
	}
	return [llength ${option_table}]
}

#**
# try to complete a `cmd configure|cget ..' from the command's options.
# @param   text start line cmd, standard tclreadlineCompleter arguments.
# @return  a tclreadline completer formatted string.
# @date    Sep-14-1999
#
proc CompleteFromOptions {text start line} {

	# check if either `configure' or `cget' is present.
	#
	set lst [ProperList ${line}]
	foreach keyword {configure cget} {
		set idx [lsearch ${lst} ${keyword}]
		if {-1 != ${idx}} {
			break
		}
	}
	if {-1 == ${idx}} {
		return
	}

	if {[regexp {(cget|configure)$} ${line}]} {
		# we are at the end of (configure|cget)
		# but there's no space yet.
		#
		return ${text}
	}

	# separate the command, but exclude (cget|configure)
	# because cget won't return the option table. Instead
	# OptionTable always uses `configure' to get the
	# option table.
	#
	set cmd [lrange ${lst} 0 [expr ${idx} - 1]]

	TraceText $cmd
	if {0 < [OptionTable ${cmd} options]} {

		set prev [PreviousWord ${start} ${line}]
		if {-1 != [set found [lsearch -exact $options(switches) ${prev}]]} {

			# complete only if the user has not
			# already entered something here.
			#
			if {![llength ${text}]} {
				# use this double list to quote option
				# values which have to be quoted.
				#
				return [list [list [lindex $options(value) ${found}]]]
			}

		} else {
			return [CompleteFromList ${text} \
			[RemoveUsedOptions ${line} $options(switches)]]
		}
	}
	return ""
}

proc ObjectClassCompleter {text start end line pos} {
	set cmd [Lindex ${line} 0]
	if {"." == [string index ${line} 0]} {
		# it's a widget. Try to get it's class name.
		#
		if {![catch [list set class [winfo class [Lindex ${line} 0]]]]} {
			if {[string length [info proc ${class}Obj]]} {
				return [${class}Obj ${text} ${start} ${end} ${line} ${pos}]
			}
		}
	}
	if {![catch [list image type ${cmd}]]} {
		return [ImageObj ${text} ${start} ${end} ${line} ${pos}]
	}
}

proc CompleteFromOptionsOrSubCmds {text start end line pos} {
	set from_opts [CompleteFromOptions ${text} ${start} ${line}]
	if {[string length ${from_opts}]} {
		return ${from_opts}
	} else {
		# puts stderr \n\n[lrange [ProperList ${line}] 0 [expr $pos - 1]]\n
		return [TrySubCmds ${text} \
		[lrange [ProperList ${line}] 0 [expr $pos - 1]]]
	}
	return ""
}

#**
# TODO: shit. make this better!
# @param  text, a std completer argument (current word).
# @param  fullpart, the full text of the current position.
# @param  lst, the list to complete from.
# @param  pre, leading `quote'.
# @param  sep, word separator.
# @param  post, trailing `quote'.
# @return a formatted completer string.
# @date   Sep-15-1999
#
proc CompleteListFromList {text fullpart lst pre sep post} {

	# puts stderr ""
	# puts stderr text=|$text|
	# puts stderr lst=|$lst|
	# puts stderr pre=|$pre|
	# puts stderr sep=|$sep|
	# puts stderr post=|$post|

	if {![string length ${fullpart}]} {

		# nothing typed so far. Insert a $pre
		# and inhibit further completion.
		#
		return [list ${pre} {}]

	} elseif {[regexp ${post} ${text}]} {

		# finalize, append the post and a space.
		#
		set diff \
		[expr [CountChar ${fullpart} ${pre}] - [CountChar ${fullpart} ${post}]]
		for {set i 0} {${i} < ${diff}} {incr i} {
			append text ${post}
		}
		append text " "
		return ${text}

	} elseif {![regexp -- ^\(.*\[${pre}${sep}\]\)\(\[^${pre}${sep}\]*\)$ \
		${text} all left right]
	} {
		set left {}
		set right ${text}
	}

	# TraceVar left
	# TraceVar right

	# puts stderr \nleft=|$left|
	# puts stderr \nright=|$right|
	set exact_matches [MatchesFromList ${right} ${lst}]
	# TODO this is awkward. Think of making it better!
	#
	if {1 == [llength ${exact_matches}] && -1 != [lsearch ${lst} ${right}]
	} {
		#set completion [CompleteFromList ${right} [list ${sep} ${post}] 1]
		return [list ${left}${right}${sep} {}]
	} else {
		set completion [CompleteFromList ${right} ${lst} 1]
	}
	# puts stderr \ncompletion=|$completion|
	if {![string length [lindex $completion 0]]} {
		return [concat [list ${left}] [lrange $completion 1 end]]
	} elseif {[string length ${left}]} {
		return [list ${left}]${completion}
	} else {
		return ${completion}
	}
	return ""
}

proc FirstNonOption {line} {
	set expr_pos 1
	foreach word [lrange ${line} 1 end] {; # 0 is the command itself
		if {"-" != [string index ${word} 0]} {
			break
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	}
	set new ""
	foreach word ${opts} {
		if {-1 == [string first ${word} ${line}]} {
			lappend new ${word}
		}
	}
















	return [string trim ${new}]
}

proc Alert {} {
	puts -nonewline \a
	flush stdout
}







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	}
	set new ""
	foreach word ${opts} {
		if {-1 == [string first ${word} ${line}]} {
			lappend new ${word}
		}
	}

	# check if the last word in the line is an options
	# and if this word is at the very end of the line,
	# that means no space after.
	# If this is so, the word is stuffed into the result,
	# so that it can be completed -- probably with a space.
	#
	set last [Lindex ${line} end]
	if {[expr [string last ${last} ${line}] + [string length ${last}]] == \
		[string length ${line}]
	} {
		if {-1 != [lsearch ${opts} ${last}]} {
			lappend new ${last}
		}
	}

	return [string trim ${new}]
}

proc Alert {} {
	puts -nonewline \a
	flush stdout
}
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		set new_start [lindex $sub 0]
		set new_end [expr $end - ($start - $new_start)]
		set new_line [lindex $sub 1]
		# puts stderr "(SplitLine) $new_start $new_end $new_line"
		return [ScriptCompleter $part $new_start $new_end $new_line]

	} elseif {0 == [set pos [PartPosition part start end line]]} {






		# puts stderr "(PartPosition) $part $start $end $line"
		set all [CommandCompletion ${part}]
		# puts stderr "(ScriptCompleter) all=$all"
		#puts \nmatches=$matches\n
		# return [Format $all $part]
		return [TryFromList $part $all]







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		set new_start [lindex $sub 0]
		set new_end [expr $end - ($start - $new_start)]
		set new_line [lindex $sub 1]
		# puts stderr "(SplitLine) $new_start $new_end $new_line"
		return [ScriptCompleter $part $new_start $new_end $new_line]

	} elseif {0 == [set pos [PartPosition part start end line]]} {

		# XXX
		#     note that line will be [string trimleft'ed]
		#     after PartPosition.
		# XXX

		# puts stderr "(PartPosition) $part $start $end $line"
		set all [CommandCompletion ${part}]
		# puts stderr "(ScriptCompleter) all=$all"
		#puts \nmatches=$matches\n
		# return [Format $all $part]
		return [TryFromList $part $all]
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					# returned an empty string. Fall thru and try
					# further fallback completers.
					#
				} else {
					# return also empty strings, if
					# they're from a specific completer.
					#

					return ${script_result}
				}
			}
			# set namespc ""; # no qualifiers for tclreadline_complete_unknown
		}

		# as we've reached here no valid specific completer
		# was found. Check, if it's a proc and return the
		# arguments.
		#



		if {[string length [uplevel [info level] info proc $alias]]} {

			set args [uplevel [info level] info args $alias]

			set arg [lindex $args [expr $pos - 1]]
			if {"" != $arg && "args" != $arg} {
				if {[uplevel [info level] info default $alias $arg junk]} {

					return [DisplayHints ?$arg?]
				} else {
					return [DisplayHints <$arg>]
				}
			}
		}








		# Ok, also no proc. Try to do the same as for widgets now:
		# try to complete from the option table if the subcommand
		# is `configure' or `cget' otherwise try to get further
		# subcommands.
		#
		return [CompleteFromOptionsOrSubCmds $part $start $end $line $pos]







>










>
>
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>
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>


|
>







>
>
>
>
>
>







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					# returned an empty string. Fall thru and try
					# further fallback completers.
					#
				} else {
					# return also empty strings, if
					# they're from a specific completer.
					#
					TraceText script_result=|${script_result}|
					return ${script_result}
				}
			}
			# set namespc ""; # no qualifiers for tclreadline_complete_unknown
		}

		# as we've reached here no valid specific completer
		# was found. Check, if it's a proc and return the
		# arguments.
		#
		if {![string length ${namespc}]} {
			set namespc ::
		}
		if {[string length [uplevel [info level] \
			namespace eval ${namespc} [list ::info proc $alias]]]} {
			set args [uplevel [info level] \
			namespace eval ${namespc} [list info args $alias]]
			set arg [lindex $args [expr $pos - 1]]
			if {"" != $arg && "args" != $arg} {
				if {[uplevel [info level] namespace eval \
					${namespc} [list info default $alias $arg junk]]} {
					return [DisplayHints ?$arg?]
				} else {
					return [DisplayHints <$arg>]
				}
			}
		}

		# check if the command is an object of known class.
		# 
		set res [ObjectClassCompleter $part $start $end $line $pos]
		if {[string length ${res}]} {
			return ${res}
		}

		# Ok, also no proc. Try to do the same as for widgets now:
		# try to complete from the option table if the subcommand
		# is `configure' or `cget' otherwise try to get further
		# subcommands.
		#
		return [CompleteFromOptionsOrSubCmds $part $start $end $line $pos]
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}

proc complete(set) {text start end line pos mod} {
	switch -- $pos {
		1 { return [VarCompletion ${text}] }
		2 {
			if {$text == "" || $text == "\"" || $text == "\{"} {
				set line [QuoteQuotes $line]
				if {[catch [list set value [list [uplevel [info level] \
					set [Lindex $line 1]]]] msg]
				} {
					return ""
				} else {
					return [Quote $value ${text}]
				}







|







2991
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}

proc complete(set) {text start end line pos mod} {
	switch -- $pos {
		1 { return [VarCompletion ${text}] }
		2 {
			if {$text == "" || $text == "\"" || $text == "\{"} {
				# set line [QuoteQuotes $line]
				if {[catch [list set value [list [uplevel [info level] \
					set [Lindex $line 1]]]] msg]
				} {
					return ""
				} else {
					return [Quote $value ${text}]
				}
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# tclreadline and import some commands.
#
namespace eval tclreadline {
	catch {
		namespace import \
		::tclreadline::DisplayHints \
		::tclreadline::CompleteFromList \
		::tclreadline::Lindex

	}
}

proc tclreadline::complete(readline) {text start end line pos mod} {
	set cmd [Lindex $line 1]
	switch -- $pos {
		1 { return [CompleteFromList ${text} {







|
>







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# tclreadline and import some commands.
#
namespace eval tclreadline {
	catch {
		namespace import \
		::tclreadline::DisplayHints \
		::tclreadline::CompleteFromList \
		::tclreadline::Lindex \
		::tclreadline::CompleteBoolean
	}
}

proc tclreadline::complete(readline) {text start end line pos mod} {
	set cmd [Lindex $line 1]
	switch -- $pos {
		1 { return [CompleteFromList ${text} {
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	regsub {^([^\.])} ${pattern} {\.\1} pattern
	if {![string length ${pattern}]} {
		set pattern .
	}
	if {[winfo exists ${pattern}]} {
		return [concat ${pattern} [winfo children ${pattern}]]
	} else {
		regsub {.[^.]*$} $pattern {} pattern
		if {[winfo exists ${pattern}]} {
			return [concat ${pattern} [winfo children ${pattern}]]
		} else {
			return ""
		}
	}
}







|







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	regsub {^([^\.])} ${pattern} {\.\1} pattern
	if {![string length ${pattern}]} {
		set pattern .
	}
	if {[winfo exists ${pattern}]} {
		return [concat ${pattern} [winfo children ${pattern}]]
	} else {
		regsub {.[^.]*$} $pattern {.} pattern
		if {[winfo exists ${pattern}]} {
			return [concat ${pattern} [winfo children ${pattern}]]
		} else {
			return ""
		}
	}
}
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		if {-1 == [lsearch $toplevels $toplevel]} {
			lappend toplevels $toplevel
		}
	}
	return $toplevels
}

#**
# try to get options for commands which
# allow `configure' (cget).
# @param command.
# @param optionsT where the table will be stored.
# @return number of options
# @date Sep-14-1999
#
proc OptionTable {cmd optionsT} {
	upvar $optionsT options
	# first we build an option table.
	# We always use `configure' here,
	# because cget will not return the
	# option table.
	#
	if {[catch [list set option_table [eval ${cmd} configure]] msg]} {
		return 0
	}
	foreach optline ${option_table} {
		if {5 != [llength ${optline}]} continue else {
			lappend options(switches) [lindex ${optline} 0]
			lappend options(value)    [lindex ${optline} 4]
		}
	}
	return [llength ${option_table}]
}

#**
# try to complete a `cmd configure|cget ..' from the command's options.
# @param text start line cmd, standard tclreadlineCompleter arguments.
# @return a tclreadline completer formatted string.
# @date Sep-14-1999
#
proc CompleteFromOptions {text start line} {

	# check if either `configure' or `cget' is present.
	#
	set lst [ProperList ${line}]
	foreach keyword {configure cget} {
		set idx [lsearch ${lst} ${keyword}]
		if {-1 != ${idx}} {
			break
		}
	}
	if {-1 == ${idx}} {
		return
	}

	# separate the command, but exclude (cget|configure)
	# because cget won't return the option table. Instead
	# OptionTable always uses `configure' to get the
	# option table.
	#
	set cmd [lrange ${lst} 0 [expr ${idx} - 1]]

	TraceText $cmd
	if {0 < [OptionTable ${cmd} options]} {

		set prev [PreviousWord ${start} ${line}]
		if {-1 != [set found [lsearch -exact $options(switches) ${prev}]]} {

			# complete only if the user has not
			# already entered something here.
			#
			if {![llength ${text}]} {
				# use this double list to quote option
				# values which have to be quoted.
				#
				return [list [list [lindex $options(value) ${found}]]]
			}

		} else {
			return [CompleteFromList ${text} \
			[RemoveUsedOptions ${line} $options(switches)]]
		}
	}
	return ""
}

proc CompleteFromOptionsOrSubCmds {text start end line pos} {
	set from_opts [CompleteFromOptions ${text} ${start} ${line}]
	if {[string length ${from_opts}]} {
		return ${from_opts}
	} else {
		# puts stderr \n\n[lrange [ProperList ${line}] 0 [expr $pos - 1]]\n
		set cmds [TrySubCmds [lrange [ProperList ${line}] 0 [expr $pos - 1]]]
		if {[llength ${cmds}]} {
			return [TryFromList ${text} ${cmds}]
		}
	}
	return ""
}

# TODO
# write a dispatcher here, which gets the widget class name
# and calls specific completers.
#
proc complete(WIDGET_COMMAND) {text start end line pos mod} {
	return [CompleteFromOptionsOrSubCmds ${text} ${start} ${end} ${line} ${pos}]
}


proc EventuallyInsertLeadingDot {text fallback} {
	if {![string length ${text}]} {
		return [list . {}]
	} else {
		return [DisplayHints $fallback]
	}
}

#**
# TODO: shit. make this better!
# @param  text, a std completer argument (current word).
# @param  fullpart, the full text of the current position.
# @param  lst, the list to complete from.
# @param  pre, leading `quote'.
# @param  sep, word separator.
# @param  post, trailing `quote'.
# @return a formatted completer string.
# @date   Sep-15-1999
#
proc CompleteListFromList {text fullpart lst pre sep post} {

	# puts stderr ""
	# puts stderr text=|$text|
	# puts stderr lst=|$lst|
	# puts stderr pre=|$pre|
	# puts stderr sep=|$sep|
	# puts stderr post=|$post|

	if {![string length ${fullpart}]} {

		# nothing typed so far. Insert a $pre
		# and inhibit further completion.
		#
		return [list ${pre} {}]

	} elseif {[regexp ${post} ${text}]} {

		# finalize, append the post and a space.
		#
		set diff \
		[expr [CountChar ${fullpart} ${pre}] - [CountChar ${fullpart} ${post}]]
		for {set i 0} {${i} < ${diff}} {incr i} {
			append text ${post}
		}
		append text " "
		return ${text}

	} elseif {![regexp -- ^\(.*\[${pre}${sep}\]\)\(\[^${pre}${sep}\]*\)$ \
		${text} all left right]
	} {
		set left {}
		set right ${text}
	}

	# TraceVar left
	# TraceVar right

	# puts stderr \nleft=|$left|
	# puts stderr \nright=|$right|
	set exact_matches [MatchesFromList ${right} ${lst}]
	# TODO this is awkward. Think of making it better!
	#
	if {1 == [llength ${exact_matches}] && -1 != [lsearch ${lst} ${right}]
	} {
		#set completion [CompleteFromList ${right} [list ${sep} ${post}] 1]
		return [list ${left}${right}${sep} {}]
	} else {
		set completion [CompleteFromList ${right} ${lst} 1]
	}
	# puts stderr \ncompletion=|$completion|
	if {![string length [lindex $completion 0]]} {
		return [concat [list ${left}] [lrange $completion 1 end]]
	} elseif {[string length ${left}]} {
		return [list ${left}]${completion}
	} else {
		return ${completion}
	}
	return ""
}

#**
# SpecificSwitchCompleter
# ---
# @param    text   -- the word to complete.
# @param    start  -- the char index of text's start in line
# @param    line   -- the line gathered so far.
# @param    switch -- the switch to complete for.







<
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|
|
<
>









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3501
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3516








































































3517
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3520
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3523
		if {-1 == [lsearch $toplevels $toplevel]} {
			lappend toplevels $toplevel
		}
	}
	return $toplevels
}






























































































# TODO
# write a dispatcher here, which gets the widget class name
# and calls specific completers.
#
# proc complete(WIDGET_COMMAND) {text start end line pos mod} {
# 	return [CompleteFromOptionsOrSubCmds ${text} ${start} ${end} ${line} ${pos}]

# }

proc EventuallyInsertLeadingDot {text fallback} {
	if {![string length ${text}]} {
		return [list . {}]
	} else {
		return [DisplayHints $fallback]
	}
}









































































#**
# SpecificSwitchCompleter
# ---
# @param    text   -- the word to complete.
# @param    start  -- the char index of text's start in line
# @param    line   -- the line gathered so far.
# @param    switch -- the switch to complete for.
3437
3438
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3440
3441
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3443


3444

3445
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3451
			# ${start} ${end} ${line} ${pos} ${mod}]
		}
		-relief {
			return [CompleteFromList ${text} {
				raised sunken flat ridge solid groove
			}]
		}


		default { return [DisplayHints <[String range ${prev} 1 end]>] }

	}
}

#**
# CompleteWidgetConfigurations
# ---
# @param    text  -- the word to complete.







>
>
|
>







3537
3538
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3554
			# ${start} ${end} ${line} ${pos} ${mod}]
		}
		-relief {
			return [CompleteFromList ${text} {
				raised sunken flat ridge solid groove
			}]
		}
		default {
			set prev [PreviousWord ${start} ${line}]
			return [DisplayHints <[String range ${prev} 1 end]>]
		}
	}
}

#**
# CompleteWidgetConfigurations
# ---
# @param    text  -- the word to complete.
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3482


















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		2 {
			if {"-displayof" == [PreviousWord ${start} ${line}]} {
				return [CompleteFromList ${text} [ToplevelWindows]]
			}
		}
	}
}



















proc complete(bind) {text start end line pos mod} {
	switch -- ${pos} {
		1 {
			set widgets [WidgetChildren ${text}]
			set toplevels [ToplevelWindows]
			if {[catch {set toplevelClass [winfo class .]}]} {
				set toplevelClass ""
			}
			set rest {
				Button Canvas Checkbutton Entry Frame Label
				Listbox Menu Menubutton Message Radiobutton
				Scale Scrollbar Text
				all
			}
			return [CompleteFromList ${text} \
			[concat ${toplevels} ${widgets} ${toplevelClass} $rest]]
		}
		2 {
			set modifiers {
				Alt Control Shift Lock Double Triple
				B1 B2 B3 B4 B5 Button1 Button2 Button3 Button4 Button5
				M M1 M2 M3 M4 M5        
				Meta Mod1 Mod2 Mod3 Mod4 Mod5
			}
			set events {
				Activate Button ButtonPress ButtonRelease
				Circulate Colormap Configure Deactivate Destroy
				Enter Expose FocusIn FocusOut Gravity
				Key KeyPress KeyRelease Leave Map Motion
				MouseWheel Property Reparent Unmap Visibility
			}
			set sequence [concat ${modifiers} ${events}]
			return [CompleteListFromList ${text} \
			[Lindex $line 2] ${sequence} < - >]
		}
		3 {
			# return [DisplayHints {<script> <+script>}]
			return [BraceOrCommand ${text} \
			${start} ${end} ${line} ${pos} ${mod}]
		}
	}
	return ""
}

proc complete(bindtags) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [CompleteFromList ${text} [WidgetChildren ${text}]] }
		2 {



			return [CompleteListFromList ${text} [Lindex ${line} 2] \
			[bindtags [Lindex ${line} 1]] \{ { } \}]
		}
	}
	return ""
}

proc complete(button) {text start end line pos mod} {
	switch -- ${pos} {







>
>
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>
>
>
>
>
>
>
>
>
>
>
>
>
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>



















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<

|












>
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>

|







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		2 {
			if {"-displayof" == [PreviousWord ${start} ${line}]} {
				return [CompleteFromList ${text} [ToplevelWindows]]
			}
		}
	}
}

proc CompleteSequence {text fulltext} {
	set modifiers {
		Alt Control Shift Lock Double Triple
		B1 B2 B3 B4 B5 Button1 Button2 Button3 Button4 Button5
		M M1 M2 M3 M4 M5        
		Meta Mod1 Mod2 Mod3 Mod4 Mod5
	}
	set events {
		Activate Button ButtonPress ButtonRelease
		Circulate Colormap Configure Deactivate Destroy
		Enter Expose FocusIn FocusOut Gravity
		Key KeyPress KeyRelease Leave Map Motion
		MouseWheel Property Reparent Unmap Visibility
	}
	set sequence [concat ${modifiers} ${events}]
	return [CompleteListFromList ${text} ${fulltext} ${sequence} < - >]
}

proc complete(bind) {text start end line pos mod} {
	switch -- ${pos} {
		1 {
			set widgets [WidgetChildren ${text}]
			set toplevels [ToplevelWindows]
			if {[catch {set toplevelClass [winfo class .]}]} {
				set toplevelClass ""
			}
			set rest {
				Button Canvas Checkbutton Entry Frame Label
				Listbox Menu Menubutton Message Radiobutton
				Scale Scrollbar Text
				all
			}
			return [CompleteFromList ${text} \
			[concat ${toplevels} ${widgets} ${toplevelClass} $rest]]
		}
		2 {






			set fulltext [Lindex $line 2]







			return [CompleteSequence ${text} ${fulltext}]

		}
		default {
			# return [DisplayHints {<script> <+script>}]
			return [BraceOrCommand ${text} \
			${start} ${end} ${line} ${pos} ${mod}]
		}
	}
	return ""
}

proc complete(bindtags) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [CompleteFromList ${text} [WidgetChildren ${text}]] }
		2 {
			# set current_tags \
			# [RemoveUsedOptions ${line} [bindtags [Lindex ${line} 1]]]
			set current_tags [bindtags [Lindex ${line} 1]]
			return [CompleteListFromList ${text} [Lindex ${line} 2] \
			$current_tags \{ { } \}]
		}
	}
	return ""
}

proc complete(button) {text start end line pos mod} {
	switch -- ${pos} {
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3595
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				-onvalue -selectcolor -selectimage -state -variable
				-width
			}]
		}
	}
	return ""
}


















































proc complete(entry) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [EventuallyInsertLeadingDot ${text} <pathName>] }
		default {
			return [CompleteWidgetConfigurations ${text} ${start} ${line} {
				-background -borderwidth -cursor -exportselection







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				-onvalue -selectcolor -selectimage -state -variable
				-width
			}]
		}
	}
	return ""
}

proc complete(clipboard) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [CompleteFromList ${text} {append clear}] }
		default {
			set sub [Lindex ${line} 1]
			set prev [PreviousWord ${start} ${line}]
			switch -- ${sub} {
				append {
					switch -- ${prev} {
						-displayof {
							return [CompleteFromList ${text} [ToplevelWindows]]
						}
						-format { return [DisplayHints <format>] }
						-type { return [DisplayHints <type>] }
						default {
							set opts [RemoveUsedOptions ${line} {
								-displayof -format -type --
							} {--}]
							if {![string length ${opts}]} {
								return [DisplayHints <data>]
							} else {
								return [CompleteFromList ${text} ${opts}]
							}
						}
					}
				}
				clear {
					switch -- ${prev} {
						-displayof {
							return [CompleteFromList ${text} [ToplevelWindows]]
						}
						default {
							return [CompleteFromList ${text} \
							[RemoveUsedOptions ${line} {
								-displayof
							}]]
						}
					}
				}
			}
		}
	}
}

proc complete(destroy) {text start end line pos mod} {
	set remaining [RemoveUsedOptions ${line} [WidgetChildren ${text}]]
	return [CompleteFromList ${text} ${remaining}]
}

proc complete(entry) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [EventuallyInsertLeadingDot ${text} <pathName>] }
		default {
			return [CompleteWidgetConfigurations ${text} ${start} ${line} {
				-background -borderwidth -cursor -exportselection
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3627
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				-highlightthickness -relief -takefocus -background
				-class -colormap -container -height -visual -width
			}]
		}
	}
	return ""
}





























































































proc complete(label) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [EventuallyInsertLeadingDot ${text} <pathName>] }
		default {
			return [CompleteWidgetConfigurations ${text} ${start} ${line} {
				-anchor -background -bitmap -borderwidth -cursor -font







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3779
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				-highlightthickness -relief -takefocus -background
				-class -colormap -container -height -visual -width
			}]
		}
	}
	return ""
}

proc complete(image) {text start end line pos mod} {
set sub [Lindex ${line} 1]
	switch -- ${pos} {
		1 { return [TrySubCmds ${text} image] }
		2 {
			switch -- ${sub} {
				create { return [CompleteFromList ${text} [image types]] }
				delete -
				height -
				type -
				width { return [CompleteFromList ${text} [image names]] }
				names {}
				types {}
			}
		}
		3 {
			switch -- ${sub} {
				create {
					set type [Lindex ${line} 2]
					switch -- ${type} {
						bitmap {
							return [CompleteFromList ${text} {
								?name? -background -data -file
								-foreground -maskdata -maskfile
							}]
						}
						photo {
							return [CompleteFromList ${text} {
								?name? -data -format -file -gamma
								-height -palette -width
							}]
						}
						default {}
					}
				}
				delete { return [CompleteFromList ${text} [image names]] }
				default {}
			}
		}
		default {
			switch -- ${sub} {
				create {
					set type [Lindex ${line} 2]
					set prev [PreviousWord ${start} ${line}]
					# puts stderr prev=$prev
					switch -- ${type} {
						bitmap {
							switch -- ${prev} {
								-background -
								-foreground { return [DisplayHints <color>] }
								-data -
								-maskdata { return [DisplayHints <string>] }
								-file -
								-maskfile { return "" }
								default {
									return [CompleteFromList ${text} \
									[RemoveUsedOptions ${line} {
										-background -data -file
										-foreground -maskdata -maskfile
									}]]
								}
							}
						}
						photo {
							switch -- ${prev} {
								-data { return [DisplayHints <string>] }
								-file { return "" }
								-format { return [DisplayHints <format-name>] }
								-gamma { return [DisplayHints <value>] }
								-height -
								-width { return [DisplayHints <number>] }
								-palette {
									return [DisplayHints <palette-spec>]
								}
								default {
									return [CompleteFromList ${text} \
									[RemoveUsedOptions ${line} {
										-data -format -file -gamma
										-height -palette -width
									}]]
								}
							}
						}
					}
				}
				delete { return [CompleteFromList ${text} [image names]] }
				default {}
			}
		}
	}
}

proc complete(label) {text start end line pos mod} {
	switch -- ${pos} {
		1 { return [EventuallyInsertLeadingDot ${text} <pathName>] }
		default {
			return [CompleteWidgetConfigurations ${text} ${start} ${line} {
				-anchor -background -bitmap -borderwidth -cursor -font
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3879
				-use -visual -width
			}]
		}
	}
	return ""
}

proc complete(image) {text start end line pos mod} {
set sub [Lindex ${line} 1]
	switch -- ${pos} {
		1 { return [CompleteFromList ${text} [TrySubCmds image]] }
		2 {
			switch -- ${sub} {
				create { return [CompleteFromList ${text} [image types]] }
				delete -
				height -
				type -
				width { return [CompleteFromList ${text} [image names]] }
				names {}
				types {}
			}
		}
		3 {
			switch -- ${sub} {
				create {
					set type [Lindex ${line} 2]
					switch -- ${type} {
						bitmap {
							return [CompleteFromList ${text} {
								?name? -background -data -file
								-foreground -maskdata -maskfile
							}]
						}
						photo {
							# TODO
						}
						default {}
					}
				}
				default {}
			}
		}
		default {
			switch -- ${sub} {
				create {
					set type [Lindex ${line} 2]
					set prev [PreviousWord ${start} ${line}]
					# puts stderr prev=$prev
					switch -- ${type} {
						bitmap {
							switch -- ${prev} {
								-background -
								-foreground { return [DisplayHints <color>] }
								-data -
								-maskdata { return [DisplayHints <string>] }
								-file -
								-maskfile { return "" }
								default {
									return [CompleteFromList ${text} \
									[RemoveUsedOptions ${line} {
										-background -data -file
										-foreground -maskdata -maskfile
									}]]
								}
							}
						}
						photo {
							# TODO
						}
					}
				}
			}
		}
	}
}

proc complete(winfo) {text start end line pos mod} {
	set cmd [lindex ${line} 1]
	switch -- ${pos} {
		1 {
			set cmds [TrySubCmds winfo]
			if {[llength ${cmds}]} {
				return [TryFromList ${text} ${cmds}]
			}
		}
		2 {
			return [TryFromList ${text} [WidgetChildren ${text}]]
		}
	}
	return ""
}
















































































































































































































































































































































































































































































































































































































}; # namespace tclreadline







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				-use -visual -width
			}]
		}
	}
	return ""
}






































































proc complete(winfo) {text start end line pos mod} {
	set cmd [lindex ${line} 1]
	switch -- ${pos} {
		1 {
			return [TrySubCmds ${text} winfo]



		}
		2 {
			return [TryFromList ${text} [WidgetChildren ${text}]]
		}
	}
	return ""
}

# ==== ObjCmd completers ==========================
#
# @note when a proc is commented out, the fallback
#       completers do the job rather well.
#
# =================================================


# proc ImageObj {text start end line pos} {
# 	set type [image type [Lindex ${line} 0]]
# 	switch -- ${type} {
# 		bitmap {}
# 		photo {}
# 	}
# 	return ""
# }

# proc ButtonObj {text start end line pos} {
# 	return ""
# }

proc CompleteFromBitmaps text {
	set inames [image names]
	set bitmaps ""
	foreach name $inames {
		if {"bitmap" == [image type $name]} {
			lappend bitmaps ${name}
		}
	}
	if {[string length ${bitmaps}]} {
		return [CompleteFromList \
		${text} ${bitmaps}]
	} else {
		return [DisplayHints <bitmaps>]
	}
}

proc CompleteAnchor text {
	return [CompleteFromList ${text} {
		n ne e se s sw w nw center
	}]
}

proc CompleteJustify text {
	return [CompleteFromList ${text} {
		left center right
	}]
}

proc CanvasItem {text start end line pos prev type} {

	switch -- ${type} {
		arc {
			switch -- ${prev} {
				-extent { return [DisplayHints <degrees>] }
				-fill -
				-outline { return [DisplayHints <color>] }
				-outlinestipple -
				-stipple {
					set inames [image names]
					set bitmaps ""
					foreach name $inames {
						if {"bitmap" == [image type $name]} {
							lappend bitmaps ${name}
						}
					}
					if {[string length ${bitmaps}]} {
						return [CompleteFromList \
						${text} ${bitmaps}]
					} else {
						return [DisplayHints <bitmaps>]
					}
				}
				-start { return [DisplayHints <degrees>] }
				-style { return [DisplayHints <type>] }
				-tags { return [DisplayHints <tagList>] }
				-width { return [DisplayHints <outlineWidth>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-extent -fill -outline -outlinestipple
						-start -stipple -style -tags -width
					}]]
				}
			}
		}
		bitmap {
			switch -- ${prev} {
				-anchor { return [CompleteAnchor ${text}] }
				-background -
				-foreground { return [DisplayHints <color>] }
				-bitmap { return [CompleteFromBitmaps ${text}] }
				-tags { return [DisplayHints <tagList>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-anchor -background -bitmap
						-foreground -tags
					}]]
				}
			}
		}
		image {
			switch -- ${prev} {
				-anchor { return [CompleteAnchor ${text}] }
				-image {
					set images [image names]
					if {[string length ${images}]} {
						return [CompleteFromList ${text} ${images}]
					} else {
						return [DisplayHints <image>]
					}
				}
				-tags { return [DisplayHints <tagList>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-anchor -image -tags
					}]]
				}
			}
		}
		line {
			switch -- ${prev} {
				-arrow {
					return [CompleteFromList ${text} {
						none first last both
					}]
				}
				-arrowshape { return [DisplayHints <shape>] }
				-capstyle {
					return [CompleteFromList ${text} {
						butt projecting round
					}]
				}
				-fill { return [DisplayHints <color>] }
				-joinstyle {
					return [CompleteFromList ${text} {
						bevel miter round
					}]
				}
				-smooth { return [CompleteBoolean ${text}] }
				-splinesteps { return [DisplayHints <number>] }
				-stipple { return [CompleteFromBitmaps ${text}] }
				-tags { return [DisplayHints <tagList>] }
				-width { return [DisplayHints <lineWidth>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-arrow -arrowshape -capstyle -fill -joinstyle
						-smooth -splinesteps -stipple -tags -width
					}]]
				}
			}
		}
		oval {
			switch -- ${prev} {
				-fill -
				-outline { return [DisplayHints <color>] }
				-stipple { return [CompleteFromBitmaps ${text}] }
				-tags { return [DisplayHints <tagList>] }
				-width { return [DisplayHints <lineWidth>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-fill -outline -stipple -tags -width
					}]]
				}
			}
		}
		polygon {
			switch -- ${prev} {
				-fill -
				-outline { return [DisplayHints <color>] }
				-smooth { return [CompleteBoolean ${text}] }
				-splinesteps { return [DisplayHints <number>] }
				-stipple { return [CompleteFromBitmaps ${text}] }
				-tags { return [DisplayHints <tagList>] }
				-width { return [DisplayHints <outlineWidth>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-fill -outline -smooth -splinesteps
						-stipple -tags -width
					}]]
				}
			}
		}
		rectangle {
			switch -- ${prev} {
				-fill -
				-outline { return [DisplayHints <color>] }
				-stipple { return [CompleteFromBitmaps ${text}] }
				-tags { return [DisplayHints <tagList>] }
				-width { return [DisplayHints <lineWidth>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-fill -outline -stipple -tags -width
					}]]
				}
			}
		}
		text {
			switch -- ${prev} {
				-anchor { return [CompleteAnchor ${text}] }
				-fill { return [DisplayHints <color>] }
				-font { return [DisplayHints <font>] }
				-justify { return [CompleteJustify ${text}] }
				-stipple { return [CompleteFromBitmaps ${text}] }
				-tags { return [DisplayHints <tagList>] }
				-text { return [DisplayHints <string>] }
				-width { return [DisplayHints <lineLength>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-anchor -fill -font -justify
						-stipple -tags -text -width
					}]]
				}
			}
		}
		window {
			switch -- ${prev} {
				-anchor { return [CompleteAnchor ${text}] }
				-height { return [DisplayHints <pixels>] }
				-tags { return [DisplayHints <tagList>] }
				-width { return [DisplayHints <lineWidth>] }
				-window {
					return [TryFromList ${text} [WidgetChildren ${text}]]
				}
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-anchor -height -tags -width -window
					}]]
				}
			}
		}
	}
}

proc CanvasObj {text start end line pos} {
	set sub [Lindex ${line} 1]
	set prev [PreviousWord ${start} ${line}]
	if {1 == $pos} {
		return; # let the fallback routines do the job.
	}
	switch -- ${sub} {
		addtag {
			switch -- ${pos} {
				2 { return [DisplayHints <tag>] }
				3 {
					return [CompleteFromList ${text} {
						above all below closest enclosed
						overlapping withtag
					}]
				}
				default {
					set search [Lindex ${line} 3]
					switch -- ${search} {
						all {}
						above -
						withtag -
						below { return [DisplayHints <tagOrId>] }
						closest {
							switch -- ${pos} {
								4 { return [DisplayHints <x>] }
								5 { return [DisplayHints <y>] }
								6 { return [DisplayHints ?halo?] }
								7 { return [DisplayHints ?start?] }
							}
						}
						enclosed -
						overlapping {
							switch -- ${pos} {
								4 { return [DisplayHints <x1>] }
								5 { return [DisplayHints <y1>] }
								6 { return [DisplayHints <x2>] }
								7 { return [DisplayHints <y2>] }
							}
						}
					}
				}
			}
		}
		bbox {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				default { return [DisplayHints ?tagOrId?] }
			}
		}
		bind {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 {
					set fulltext [Lindex ${line} 3]
					return [CompleteSequence ${text} ${fulltext}]
					# return [DisplayHints ?sequence?]
				}
				default {
					return [BraceOrCommand ${text} \
					${start} ${end} ${line} ${pos} ${text}]
				}
			}
		}
		canvasx {
			switch -- ${pos} {
				2 { return [DisplayHints <screenx>] }
				3 { return [DisplayHints ?gridspacing?] }
			}
		}
		canvasy {
			switch -- ${pos} {
				2 { return [DisplayHints <screeny>] }
				3 { return [DisplayHints ?gridspacing?] }
			}
		}
		coords {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				default {
					switch [expr ${pos} % 2] {
						1 { return [DisplayHints ?x?] }
						0 { return [DisplayHints ?y?] }
					}
				}
			}
		}
		dchars {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints <first>] }
				4 { return [DisplayHints ?last?] }
			}
		}
		delete { return [DisplayHints ?tagOrId?] }
		dtag {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints ?tagToDelete?] }
			}
		}
		find {
			# let the fallback routines do the job.
		}
		focus {
			switch -- ${pos} {
				2 { return [DisplayHints ?tagOrId?] }
			}
		}
		gettags {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
			}
		}
		icursor -
		index {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints <index>] }
			}
		}
		insert {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints <beforeThis>] }
				4 { return [DisplayHints <string>] }
			}
		}
		lower {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints ?belowThis?] }
			}
		}
		move {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints <xAmount>] }
				4 { return [DisplayHints <yAmount>] }
			}
		}
		postscript {
			switch -- ${prev} {
				-file { return "" }
				-colormap -
				-colormode -
				-fontmap -
				-height -
				-pageanchor -
				-pageheight -
				-pagewidth -
				-pagex -
				-pagey -
				-rotate -
				-width -
				-x -
				-y { return [DisplayHints <[String range ${prev} 1 end]>] }
				default {
					return [CompleteFromList ${text} \
					[RemoveUsedOptions ${line} {
						-colormap -colormode -file -fontmap -height
						-pageanchor -pageheight -pagewidth -pagex
						-pagey -rotate -width -x -y
					}]]
				}
			}
		}
		raise {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints ?aboveThis?] }
			}
		}
		scale {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				3 { return [DisplayHints <xOrigin>] }
				4 { return [DisplayHints <yOrigin>] }
				5 { return [DisplayHints <xScale>] }
				6 { return [DisplayHints <yScale>] }
			}
		}
		scan {
			switch -- ${pos} {
				2 { return [CompleteFromList ${text} {mark dragto}] }
				3 { return [DisplayHints <x>] }
				4 { return [DisplayHints <y>] }
			}
		}
		select {
			switch -- ${pos} {
				2 {
					return [CompleteFromList ${text} {
						adjust clear item from to
					}]
				}
				3 {
					set sub [Lindex ${line} 2]
					switch -- ${sub} {
						adjust -
						from -
						to { return [DisplayHints <tagOrId>] }
					}
				}
				4 {
					set sub [Lindex ${line} 2]
					switch -- ${sub} {
						adjust -
						from -
						to { return [DisplayHints <index>] }
					}
				}
			}
		}
		xview -
		yview {
			switch -- ${pos} {
				2 { return [CompleteFromList ${text} {moveto scroll}] }
				3 {
					switch -- ${prev} {
						moveto { return [DisplayHints <fraction>] }
						scroll { return [DisplayHints <number>] }
					}
				}
				4 {
					set subcmd [Lindex ${line} 2]
					switch -- ${subcmd} {
						scroll { return [DisplayHints <what>] }
					}
				}
			}
		}
		create {
			switch -- ${pos} {
				2 {
					return [CompleteFromList ${text} {
						arc bitmap image line oval
						polygon rectangle text window
					}]
				}
				3 { return [DisplayHints <x1>] }
				4 { return [DisplayHints <y1>] }
				5 {
					set type [Lindex ${line} 2]
					switch -- ${type} {
						arc -
						oval -
						rectangle { return [DisplayHints <x2>] }
						# TODO items with more than 4 coordinates
						default {
							return [CanvasItem ${text} ${start} \
							${end} ${line} ${pos} ${prev} ${type}]
						}
					}
				}
				6 {
					set type [Lindex ${line} 2]
					switch -- ${type} {
						arc -
						oval -
						rectangle { return [DisplayHints <y2>] }
						# TODO items with more than 4 coordinates
						default {
							return [CanvasItem ${text} ${start} \
							${end} ${line} ${pos} ${prev} ${type}]
						}
					}
				}
				default {
					set type [Lindex ${line} 2]
					# TODO items with more than 4 coordinates
					return [CanvasItem ${text} ${start} \
					${end} ${line} ${pos} ${prev} ${type}]
				}
			}
		}
		itemconfigure -
		itemcget {
			switch -- ${pos} {
				2 { return [DisplayHints <tagOrId>] }
				default {

					set id [Lindex ${line} 2]
					set type [[Lindex ${line} 0] type ${id}]
					if {![string length ${type}]} {
						return ""; # no such element
					}

					return [CanvasItem ${text} ${start} \
					${end} ${line} ${pos} ${prev} ${type}]
				}
			}
		}
	}
	return ""
}

proc EntryObj {text start end line pos} {
	set sub [Lindex ${line} 1]
	set prev [PreviousWord ${start} ${line}]
	if {1 == $pos} {
		return; # let the fallback routines do the job.
	}
	switch -- ${sub} {
		bbox {}
		cget {}
		configure {}
		delete {}
		get {}
		icursor {}
		index {}
		insert {}
		scan {
			switch -- ${pos} {
				2 { return [CompleteFromList ${text} {mark dragto}] }
				3 { return [DisplayHints <x>] }
				4 { return [DisplayHints <y>] }
			}
		}
		selection {}
		xview -
		yview {
			switch -- ${pos} {
				2 { return [CompleteFromList ${text} {moveto scroll}] }
				3 {
					switch -- ${prev} {
						moveto { return [DisplayHints <fraction>] }
						scroll { return [DisplayHints <number>] }
					}
				}
				4 {
					set subcmd [Lindex ${line} 2]
					switch -- ${subcmd} {
						scroll { return [DisplayHints <what>] }
					}
				}
			}
		}
	}
	return ""
}

# proc CheckbuttonObj {text start end line pos} {
# }

# proc FrameObj {text start end line pos} {
# 	return ""
# }

}; # namespace tclreadline