1 ! Copyright (C) 2006, 2011 Slava Pestov
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays assocs calendar colors.constants
4 combinators combinators.short-circuit documents
5 documents.elements fonts fry grouping kernel literals locals
6 make math math.functions math.order math.ranges math.rectangles
7 math.vectors models models.arrow namespaces opengl opengl.gl
8 sequences sorting splitting system timers ui.baseline-alignment
9 ui.clipboards ui.commands ui.gadgets ui.gadgets.borders
10 ui.gadgets.line-support ui.gadgets.menus ui.gadgets.scrollers
11 ui.gestures ui.pens.solid ui.render ui.text ui.theme unicode ;
12 IN: ui.gadgets.editors
14 TUPLE: editor < line-gadget
16 focused? blink blink-timer
20 preedit-selected-start
22 preedit-selection-mode?
25 M: editor preedit? preedit-start>> ;
29 : <loc> ( -- loc ) { 0 0 } <model> ;
31 : init-editor-locs ( editor -- editor )
35 : editor-theme ( editor -- editor )
36 monospace-font >>font ; inline
40 : new-editor ( class -- editor )
46 : <editor> ( -- editor )
51 : activate-editor-model ( editor model -- )
53 [ nip activate-model ]
54 [ swap model>> add-loc ] 2tri ;
56 : deactivate-editor-model ( editor model -- )
58 [ nip deactivate-model ]
59 [ swap model>> remove-loc ] 2tri ;
61 : blink-caret ( editor -- )
62 [ not ] change-blink relayout-1 ;
64 SYMBOL: blink-interval
66 750 milliseconds blink-interval set-global
68 : stop-blinking ( editor -- )
69 blink-timer>> [ stop-timer ] when* ;
71 : start-blinking ( editor -- )
73 blink-timer>> [ restart-timer ] when* ;
75 : restart-blinking ( editor -- )
85 [ dup caret>> activate-editor-model ]
86 [ dup mark>> activate-editor-model ]
89 '[ _ blink-caret ] blink-interval get dup <timer>
94 [ [ stop-blinking ] [ f >>blink-timer drop ] bi ]
95 [ dup caret>> deactivate-editor-model ]
96 [ dup mark>> deactivate-editor-model ] tri ;
98 : editor-caret ( editor -- loc ) caret>> value>> ;
100 : editor-mark ( editor -- loc ) mark>> value>> ;
102 : set-caret ( loc editor -- )
103 [ model>> validate-loc ] [ caret>> ] bi set-model ;
105 : set-mark ( loc editor -- )
106 [ model>> validate-loc ] [ mark>> ] bi set-model ;
108 : change-caret ( editor quot: ( loc document -- newloc ) -- )
109 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
112 : mark>caret ( editor -- )
113 [ editor-caret ] [ mark>> ] bi set-model ;
115 : change-caret&mark ( editor quot: ( loc document -- newloc ) -- )
116 [ change-caret ] [ drop mark>caret ] 2bi ; inline
118 : editor-line ( n editor -- str ) control-value nth ;
120 :: point>loc ( point editor -- loc )
121 point second editor y>line {
122 { [ dup 0 < ] [ drop { 0 0 } ] }
123 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
133 : clicked-loc ( editor -- loc )
134 [ hand-rel ] keep point>loc ;
136 : click-loc ( editor model -- )
137 [ clicked-loc ] dip set-model ;
139 : focus-editor ( editor -- )
140 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
142 : unfocus-editor ( editor -- )
143 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
145 : loc>x ( loc editor -- x )
146 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x round ;
148 : loc>point ( loc editor -- loc )
149 [ loc>x ] [ [ first ] dip line>y ceiling ] 2bi 2array ;
151 : caret-loc ( editor -- loc )
152 [ editor-caret ] keep loc>point ;
154 : caret-dim ( editor -- dim )
155 [ 0 ] dip line-height 2array ;
157 : scroll>caret ( editor -- )
158 dup graft-state>> second [
160 [ caret-loc ] [ caret-dim { 2 1 } v+ ] bi <rect>
166 : draw-caret? ( editor -- ? )
167 { [ focused?>> ] [ blink>> ]
168 [ [ preedit? not ] [ preedit-selection-mode?>> not ] bi or ] } 1&& ;
170 : draw-caret ( editor -- )
172 [ editor-caret-color gl-color ] dip
173 [ caret-loc ] [ caret-dim ] bi
177 :: draw-preedit-underlines ( editor -- )
178 editor [ preedit? ] [ preedit-underlines>> ] bi and [
179 editor [ caret-loc second ] [ caret-dim second ] bi + 2.0 - :> y
180 editor editor-caret first :> row
181 editor font>> foreground>> gl-color
182 editor preedit-underlines>> [
184 dup second glLineWidth
185 first editor preedit-start>> second dup 2array v+ first2
186 [ row swap 2array editor loc>x 1.0 + y 2array ]
187 [ row swap 2array editor loc>x 1.0 - y 2array ]
194 : selection-start/end ( editor -- start end )
195 [ editor-mark ] [ editor-caret ] bi sort-pair ;
197 SYMBOL: selected-lines
199 TUPLE: selected-line start end first? last? ;
201 : compute-selection ( editor -- assoc )
202 dup gadget-selection? [
203 [ selection-start/end [ [ first ] bi@ [a,b] ] [ ] 2bi ]
205 '[ [ _ _ ] [ _ start/end-on-line ] bi 2array ] H{ } map>assoc
208 :: draw-selection ( line pair editor -- )
209 pair [ editor font>> line offset>x ] map :> pair
210 editor selection-color>> gl-color
212 pair second pair first - round 1 max editor line-height 2array
215 : draw-unselected-line ( line editor -- )
216 font>> swap draw-text ;
218 : draw-selected-line ( line pair editor -- )
220 [ nip draw-unselected-line ] [ draw-selection ] 3bi
224 [ [ first2 ] [ selection-color>> ] bi* <selection> ]
225 [ draw-unselected-line ] bi
229 : draw-default-text? ( editor -- ? )
230 { [ default-text>> ] [ model>> doc-string empty? ] } 1&& ;
232 : draw-default-text ( editor -- )
233 [ font>> clone line-color >>foreground ]
234 [ default-text>> ] bi draw-text ;
239 [ selected-lines get at ] dip over
240 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
242 M: editor draw-gadget*
243 dup draw-default-text? [
244 [ draw-default-text ] [ draw-caret ] [ draw-preedit-underlines ] tri
246 dup compute-selection selected-lines [
247 [ draw-lines ] [ draw-caret ] [ draw-preedit-underlines ] tri
252 [ call-next-method ] keep ! at least as big as our min-rows/min-cols
253 ! Add some space for the caret.
254 [ font>> ] keep dup draw-default-text?
255 [ default-text>> ] [ control-value ] if
256 text-dim { 1 0 } v+ vmax ;
258 M: editor baseline font>> font-metrics ascent>> ;
260 M: editor cap-height font>> font-metrics cap-height>> ;
264 : contents-changed ( model editor -- )
265 [ [ nip caret>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
266 [ [ nip mark>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
267 [ nip relayout ] 2tri ;
269 : caret/mark-changed ( editor -- )
270 [ restart-blinking ] keep scroll>caret ;
274 M: editor model-changed
276 { [ 2dup model>> eq? ] [ contents-changed ] }
277 { [ 2dup caret>> eq? ] [ nip caret/mark-changed ] }
278 { [ 2dup mark>> eq? ] [ nip caret/mark-changed ] }
281 M: editor gadget-selection?
282 selection-start/end = not ;
284 M: editor gadget-selection
285 [ selection-start/end ] [ model>> ] bi doc-range ;
287 : remove-selection ( editor -- )
288 [ selection-start/end ] [ model>> ] bi remove-doc-range ;
290 M: editor user-input*
291 [ selection-start/end ] [ model>> ] bi set-doc-range t ;
293 M: editor temp-im-input
294 [ selection-start/end ] [ model>> ] bi set-doc-range* t ;
296 : editor-string ( editor -- string )
299 : set-editor-string ( string editor -- )
300 model>> set-doc-string ;
302 M: editor gadget-text* editor-string % ;
304 : extend-selection ( editor -- )
307 [ dup caret>> click-loc ] tri ;
309 : remove-preedit-text ( editor -- )
310 { [ preedit-start>> ] [ set-caret ]
311 [ preedit-end>> ] [ set-mark ]
315 : remove-preedit-info ( editor -- )
318 f >>preedit-selected-start
319 f >>preedit-selected-end
320 f >>preedit-selection-mode?
321 f >>preedit-underlines
324 : mouse-elt ( -- element )
328 } at one-line-elt or ;
330 : drag-direction? ( loc editor -- ? )
331 editor-mark before? ;
333 : drag-selection-caret ( loc editor element -- loc )
335 [ drag-direction? ] [ model>> ] 2bi
336 ] dip prev/next-elt ? ;
338 : drag-selection-mark ( loc editor element -- loc )
340 [ drag-direction? not ]
343 ] dip prev/next-elt ? ;
345 : drag-caret&mark ( editor -- caret mark )
346 [ clicked-loc ] [ mouse-elt ] bi
347 [ drag-selection-caret ]
348 [ drag-selection-mark ] 3bi ;
350 : drag-selection ( editor -- )
353 [ caret>> set-model ] tri ;
355 : editor-cut ( editor clipboard -- )
356 [ gadget-copy ] [ drop remove-selection ] 2bi ;
358 : delete/backspace ( editor quot -- )
359 over gadget-selection? [
360 drop remove-selection
362 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
367 : editor-delete ( editor elt -- )
368 '[ dupd _ next-elt ] delete/backspace ;
370 : editor-backspace ( editor elt -- )
371 '[ over [ _ prev-elt ] dip ] delete/backspace ;
373 : editor-select-prev ( editor elt -- )
374 '[ _ prev-elt ] change-caret ;
376 : editor-prev ( editor elt -- )
377 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
379 : editor-select-next ( editor elt -- )
380 '[ _ next-elt ] change-caret ;
382 : editor-next ( editor elt -- )
383 dupd editor-select-next mark>caret ;
385 : editor-select ( from to editor -- )
386 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
388 : select-elt ( editor elt -- )
389 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
392 : start-of-document ( editor -- ) doc-elt editor-prev ;
394 : end-of-document ( editor -- ) doc-elt editor-next ;
396 : position-caret ( editor -- )
397 mouse-elt dup one-char-elt =
398 [ drop dup extend-selection dup mark>> click-loc ]
401 : delete-previous-character ( editor -- )
402 char-elt editor-backspace ;
404 : delete-next-character ( editor -- )
405 char-elt editor-delete ;
407 : delete-previous-word ( editor -- )
408 word-elt editor-backspace ;
410 : delete-next-word ( editor -- )
411 word-elt editor-delete ;
413 : delete-to-start-of-line ( editor -- )
414 one-line-elt editor-backspace ;
416 : delete-to-end-of-line ( editor -- )
417 one-line-elt editor-delete ;
419 : delete-to-start-of-document ( editor -- )
420 doc-elt editor-delete ;
422 : delete-to-end-of-document ( editor -- )
423 doc-elt editor-delete ;
425 : com-undo ( editor -- ) model>> undo ;
427 : com-redo ( editor -- ) model>> redo ;
430 { undo-action com-undo }
431 { redo-action com-redo }
432 { T{ key-down f f "DELETE" } delete-next-character }
433 { T{ key-down f f "BACKSPACE" } delete-previous-character }
434 { T{ key-down f { S+ } "DELETE" } delete-next-character }
435 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
436 { T{ key-down f ${ os macosx? A+ C+ ? } "DELETE" } delete-next-word }
437 { T{ key-down f ${ os macosx? A+ C+ ? } "BACKSPACE" } delete-previous-word }
438 { T{ key-down f ${ os macosx? M+ A+ ? } "DELETE" } delete-to-end-of-line }
439 { T{ key-down f ${ os macosx? M+ A+ ? } "BACKSPACE" } delete-to-start-of-line }
441 { T{ key-down f { C+ } "DELETE" } delete-next-character }
442 { T{ key-down f { C+ } "BACKSPACE" } delete-previous-character }
443 } append ] when define-command-map
445 : com-paste ( editor -- ) clipboard get paste-clipboard ;
447 : paste-selection ( editor -- ) ui.clipboards:selection get paste-clipboard ;
449 : com-cut ( editor -- ) clipboard get editor-cut ;
451 editor "clipboard" f {
452 { cut-action com-cut }
453 { copy-action com-copy }
454 { paste-action com-paste }
455 { T{ button-up } com-copy-selection }
456 { T{ button-up f f 2 } paste-selection }
459 : previous-character ( editor -- )
460 dup gadget-selection? [
461 dup selection-start/end drop
462 over set-caret mark>caret
467 : next-character ( editor -- )
468 dup gadget-selection? [
469 dup selection-start/end nip
470 over set-caret mark>caret
475 : previous-word ( editor -- ) word-elt editor-prev ;
477 : next-word ( editor -- ) word-elt editor-next ;
479 : start-of-line ( editor -- ) one-line-elt editor-prev ;
481 : end-of-line ( editor -- ) one-line-elt editor-next ;
483 : start-of-paragraph ( editor -- ) paragraph-elt editor-prev ;
485 : end-of-paragraph ( editor -- ) paragraph-elt editor-next ;
487 editor "caret-motion" f {
488 { T{ button-down } position-caret }
489 { T{ key-down f f "LEFT" } previous-character }
490 { T{ key-down f f "RIGHT" } next-character }
491 { T{ key-down f ${ os macosx? A+ C+ ? } "LEFT" } previous-word }
492 { T{ key-down f ${ os macosx? A+ C+ ? } "RIGHT" } next-word }
493 { T{ key-down f f "HOME" } start-of-line }
494 { T{ key-down f f "END" } end-of-line }
495 { T{ key-down f ${ os macosx? A+ C+ ? } "UP" } start-of-paragraph }
496 { T{ key-down f ${ os macosx? A+ C+ ? } "DOWN" } end-of-paragraph }
497 { T{ key-down f ${ os macosx? A+ C+ ? } "HOME" } start-of-document }
498 { T{ key-down f ${ os macosx? A+ C+ ? } "END" } end-of-document }
500 { T{ key-down f { M+ } "LEFT" } start-of-line }
501 { T{ key-down f { M+ } "RIGHT" } end-of-line }
502 { T{ key-down f { M+ } "UP" } start-of-paragraph }
503 { T{ key-down f { M+ } "DOWN" } end-of-paragraph }
504 { T{ key-down f { M+ } "HOME" } start-of-document }
505 { T{ key-down f { M+ } "END" } end-of-document }
506 } append ] when define-command-map
508 : clear-editor ( editor -- )
511 : select-all ( editor -- ) doc-elt select-elt ;
513 : select-line ( editor -- ) one-line-elt select-elt ;
515 : select-word ( editor -- ) one-word-elt select-elt ;
517 : selected-token ( editor -- string )
518 dup gadget-selection?
519 [ dup select-word ] unless
522 : select-previous-character ( editor -- )
523 char-elt editor-select-prev ;
525 : select-next-character ( editor -- )
526 char-elt editor-select-next ;
528 : select-previous-word ( editor -- )
529 word-elt editor-select-prev ;
531 : select-next-word ( editor -- )
532 word-elt editor-select-next ;
534 : select-start-of-line ( editor -- )
535 one-line-elt editor-select-prev ;
537 : select-end-of-line ( editor -- )
538 one-line-elt editor-select-next ;
540 : select-start-of-paragraph ( editor -- )
541 paragraph-elt editor-select-prev ;
543 : select-end-of-paragraph ( editor -- )
544 paragraph-elt editor-select-next ;
546 : select-start-of-document ( editor -- )
547 doc-elt editor-select-prev ;
549 : select-end-of-document ( editor -- )
550 doc-elt editor-select-next ;
552 editor "selection" f {
553 { T{ button-down f { S+ } 1 } extend-selection }
554 { T{ button-up f { S+ } 1 } com-copy-selection }
555 { T{ drag { # 1 } } drag-selection }
556 { gain-focus focus-editor }
557 { lose-focus unfocus-editor }
558 { delete-action remove-selection }
559 { select-all-action select-all }
560 { T{ key-down f { C+ } "l" } select-line }
561 { T{ key-down f { S+ } "LEFT" } select-previous-character }
562 { T{ key-down f { S+ } "RIGHT" } select-next-character }
563 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "LEFT" } select-previous-word }
564 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "RIGHT" } select-next-word }
565 { T{ key-down f { S+ } "HOME" } select-start-of-line }
566 { T{ key-down f { S+ } "END" } select-end-of-line }
567 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "UP" } select-start-of-paragraph }
568 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "DOWN" } select-end-of-paragraph }
569 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "HOME" } select-start-of-document }
570 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "END" } select-end-of-document }
572 { T{ key-down f { S+ M+ } "LEFT" } select-start-of-line }
573 { T{ key-down f { S+ M+ } "RIGHT" } select-end-of-line }
574 { T{ key-down f { S+ M+ } "UP" } select-start-of-paragraph }
575 { T{ key-down f { S+ M+ } "DOWN" } select-end-of-paragraph }
576 { T{ key-down f { S+ M+ } "HOME" } select-start-of-document }
577 { T{ key-down f { S+ M+ } "END" } select-end-of-document }
578 } append ] when define-command-map
580 : editor-menu ( editor -- )
588 } show-commands-menu ;
591 ! { T{ button-down f f 2 } paste-selection }
592 { T{ button-down f f 3 } editor-menu }
596 TUPLE: multiline-editor < editor ;
598 : <multiline-editor> ( -- editor )
599 multiline-editor new-editor ;
601 : previous-line ( editor -- ) line-elt editor-prev ;
603 : next-line ( editor -- ) line-elt editor-next ;
607 : page-elt ( editor n -- editor element )
608 over visible-lines 1 - min 1 max <page-elt> ;
610 : prev-page-elt ( editor -- editor element )
611 dup editor-caret first page-elt ;
613 : next-page-elt ( editor -- editor element )
614 dup [ control-value length 1 - ] [ editor-caret first ] bi - page-elt ;
618 : previous-page ( editor -- ) prev-page-elt editor-prev ;
620 : next-page ( editor -- ) next-page-elt editor-next ;
622 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
624 : select-next-line ( editor -- ) line-elt editor-select-next ;
626 : select-previous-page ( editor -- ) prev-page-elt editor-select-prev ;
628 : select-next-page ( editor -- ) next-page-elt editor-select-next ;
630 : insert-newline ( editor -- )
631 "\n" swap user-input* drop ;
633 : insert-newline-after ( editor -- )
634 [ insert-newline ] [ previous-character ] bi ;
636 : change-selection ( editor quot -- )
637 '[ gadget-selection @ ] [ user-input* drop ] bi ; inline
641 : join-lines ( string -- string' )
643 [ rest-slice [ [ blank? ] trim-head-slice ] map! drop ]
644 [ but-last-slice [ [ blank? ] trim-tail-slice ] map! drop ]
648 : last-line? ( document line -- ? )
649 [ last-line# ] dip = ;
651 : prev-line-and-this ( document line -- start end )
652 swap [ drop 1 - 0 2array ] [ line-end ] 2bi ;
654 : join-with-prev ( document line -- )
655 [ prev-line-and-this ] [ drop ] 2bi
656 [ join-lines ] change-doc-range ;
658 : this-line-and-next ( document line -- start end )
659 swap [ drop 0 2array ] [ [ 1 + ] dip line-end ] 2bi ;
661 : join-with-next ( document line -- )
662 [ this-line-and-next ] [ drop ] 2bi
663 [ join-lines ] change-doc-range ;
667 : com-join-lines ( editor -- )
668 dup gadget-selection?
669 [ [ join-lines ] change-selection ] [
670 [ model>> ] [ editor-caret first ] bi {
671 { [ over last-line# 0 = ] [ 2drop ] }
672 { [ 2dup last-line? ] [ join-with-prev ] }
677 multiline-editor "multiline" f {
678 { T{ key-down f f "UP" } previous-line }
679 { T{ key-down f f "DOWN" } next-line }
680 { T{ key-down f { S+ } "UP" } select-previous-line }
681 { T{ key-down f { S+ } "DOWN" } select-next-line }
682 { T{ key-down f f "PAGE_UP" } previous-page }
683 { T{ key-down f f "PAGE_DOWN" } next-page }
684 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
685 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
686 { T{ key-down f f "RET" } insert-newline }
687 { T{ key-down f { S+ } "RET" } insert-newline }
688 { T{ key-down f f "ENTER" } insert-newline }
689 { T{ key-down f { S+ } "ENTER" } insert-newline }
690 { T{ key-down f { C+ } "o" } insert-newline-after }
691 { T{ key-down f { C+ } "j" } com-join-lines }
694 TUPLE: source-editor < multiline-editor ;
696 : <source-editor> ( -- editor )
697 source-editor new-editor ;
700 : <element-model> ( editor element -- model )
701 [ [ caret>> ] [ model>> ] bi ] dip
702 '[ _ _ elt-string ] <arrow> ;
704 ! Fields wrap an editor
705 TUPLE: field < border editor min-cols max-cols ;
709 : field-theme ( gadget -- gadget )
712 field-border-color <solid> >>boundary ; inline
714 : <field-border> ( gadget -- border )
715 border new-border field-theme ;
719 : new-field ( class -- gadget )
720 [ <editor> ] dip new-border
721 dup gadget-child >>editor
724 ! For line-gadget-width
725 M: field font>> editor>> font>> ;
729 [ editor>> pref-dim ]
730 [ [ line-gadget-width ] [ drop second ] 2bi 2array ]
731 tri border-pref-dim ;
733 M: field default-text>> editor>> default-text>> ;
735 M: field default-text<< editor>> default-text<< ;
737 TUPLE: model-field < field field-model ;
739 : <model-field> ( model -- gadget )
740 model-field new-field
743 M: model-field graft*
744 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
745 [ dup editor>> model>> add-connection ]
748 M: model-field ungraft*
749 dup editor>> model>> remove-connection ;
751 M: model-field model-changed
752 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
754 TUPLE: action-field < field quot ;
756 : <action-field> ( quot: ( string -- ) -- gadget )
757 action-field [ <editor> ] dip new-border
758 dup gadget-child >>editor
762 : invoke-action-field ( field -- )
763 [ editor>> editor-string ]
764 [ editor>> clear-editor ]
766 tri call( string -- ) ;
769 { T{ key-down f f "RET" } [ invoke-action-field ] }
772 : readline-bindings ( editor-class -- )
774 { T{ key-down f { C+ } "p" } previous-line }
775 { T{ key-down f { C+ } "n" } next-line }
776 { T{ key-down f { C+ } "b" } previous-character }
777 { T{ key-down f { C+ } "f" } next-character }
778 { T{ key-down f { C+ } "a" } start-of-line }
779 { T{ key-down f { C+ } "e" } end-of-line }
780 ! { T{ key-down f { C+ } "t" } transpose-character }
781 { T{ key-down f { C+ } "d" } delete-next-character }
782 { T{ key-down f { C+ } "h" } delete-previous-character }
783 { T{ key-down f { C+ } "u" } delete-to-start-of-line }
784 { T{ key-down f { C+ } "k" } delete-to-end-of-line }
785 { T{ key-down f { C+ } "w" } delete-previous-word }
786 } define-command-map ;