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Blob

Date:: Fri Dec 16 15:12:38 2005 UTC
Message:: Better window size management.
Actions:: History | Blame | Raw File
1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <thread.h>
5 #include <cursor.h>
6 #include <mouse.h>
7 #include <keyboard.h>
8 #include <frame.h>
9 #include <fcall.h>
10 #include <regexp.h>
11 #include <9pclient.h>
12 #include <plumb.h>
13 #include "dat.h"
14 #include "fns.h"
15 
16 CFid *plumbsendfid;
17 CFid *plumbeditfid;
18 
19 Window*	openfile(Text*, Expand*, int);
20 
21 int	nuntitled;
22 
23 void
24 plumbproc(void *v)
25 {
26 	Plumbmsg *m;
27 
28 	USED(v);
29 	threadsetname("plumbproc");
30 	for(;;){
31 		m = plumbrecvfid(plumbeditfid);
32 		if(m == nil)
33 			threadexits(nil);
34 		sendp(cplumb, m);
35 	}
36 }
37 
38 void
39 startplumbing(void)
40 {
41 	plumbeditfid = plumbopenfid("edit", OREAD|OCEXEC);
42 	if(plumbeditfid == nil)
43 		fprint(2, "acme: can't initialize plumber: %r\n");
44 	else{
45 		cplumb = chancreate(sizeof(Plumbmsg*), 0);
46 		chansetname(cplumb, "cplumb");
47 		threadcreate(plumbproc, nil, STACK);
48 	}
49 	plumbsendfid = plumbopenfid("send", OWRITE|OCEXEC);
50 }
51 
52 
53 void
54 look3(Text *t, uint q0, uint q1, int external)
55 {
56 	int n, c, f, expanded;
57 	Text *ct;
58 	Expand e;
59 	Rune *r;
60 	uint p;
61 	Plumbmsg *m;
62 	Runestr dir;
63 	char buf[32];
64 
65 	ct = seltext;
66 	if(ct == nil)
67 		seltext = t;
68 	expanded = expand(t, q0, q1, &e);
69 	if(!external && t->w!=nil && t->w->nopen[QWevent]>0){
70 		/* send alphanumeric expansion to external client */
71 		if(expanded == FALSE)
72 			return;
73 		f = 0;
74 		if((e.u.at!=nil && t->w!=nil) || (e.nname>0 && lookfile(e.name, e.nname)!=nil))
75 			f = 1;		/* acme can do it without loading a file */
76 		if(q0!=e.q0 || q1!=e.q1)
77 			f |= 2;	/* second (post-expand) message follows */
78 		if(e.nname)
79 			f |= 4;	/* it's a file name */
80 		c = 'l';
81 		if(t->what == Body)
82 			c = 'L';
83 		n = q1-q0;
84 		if(n <= EVENTSIZE){
85 			r = runemalloc(n);
86 			bufread(&t->file->b, q0, r, n);
87 			winevent(t->w, "%c%d %d %d %d %.*S\n", c, q0, q1, f, n, n, r);
88 			free(r);
89 		}else
90 			winevent(t->w, "%c%d %d %d 0 \n", c, q0, q1, f, n);
91 		if(q0==e.q0 && q1==e.q1)
92 			return;
93 		if(e.nname){
94 			n = e.nname;
95 			if(e.a1 > e.a0)
96 				n += 1+(e.a1-e.a0);
97 			r = runemalloc(n);
98 			runemove(r, e.name, e.nname);
99 			if(e.a1 > e.a0){
100 				r[e.nname] = ':';
101 				bufread(&e.u.at->file->b, e.a0, r+e.nname+1, e.a1-e.a0);
102 			}
103 		}else{
104 			n = e.q1 - e.q0;
105 			r = runemalloc(n);
106 			bufread(&t->file->b, e.q0, r, n);
107 		}
108 		f &= ~2;
109 		if(n <= EVENTSIZE)
110 			winevent(t->w, "%c%d %d %d %d %.*S\n", c, e.q0, e.q1, f, n, n, r);
111 		else
112 			winevent(t->w, "%c%d %d %d 0 \n", c, e.q0, e.q1, f, n);
113 		free(r);
114 		goto Return;
115 	}
116 	if(plumbsendfid != nil){
117 		/* send whitespace-delimited word to plumber */
118 		m = emalloc(sizeof(Plumbmsg));
119 		m->src = estrdup("acme");
120 		m->dst = nil;
121 		dir = dirname(t, nil, 0);
122 		if(dir.nr==1 && dir.r[0]=='.'){	/* sigh */
123 			free(dir.r);
124 			dir.r = nil;
125 			dir.nr = 0;
126 		}
127 		if(dir.nr == 0)
128 			m->wdir = estrdup(wdir);
129 		else
130 			m->wdir = runetobyte(dir.r, dir.nr);
131 		free(dir.r);
132 		m->type = estrdup("text");
133 		m->attr = nil;
134 		buf[0] = '\0';
135 		if(q1 == q0){
136 			if(t->q1>t->q0 && t->q0<=q0 && q0<=t->q1){
137 				q0 = t->q0;
138 				q1 = t->q1;
139 			}else{
140 				p = q0;
141 				while(q0>0 && (c=tgetc(t, q0-1))!=' ' && c!='\t' && c!='\n')
142 					q0--;
143 				while(q1<t->file->b.nc && (c=tgetc(t, q1))!=' ' && c!='\t' && c!='\n')
144 					q1++;
145 				if(q1 == q0){
146 					plumbfree(m);
147 					goto Return;
148 				}
149 				sprint(buf, "click=%d", p-q0);
150 				m->attr = plumbunpackattr(buf);
151 			}
152 		}
153 		r = runemalloc(q1-q0);
154 		bufread(&t->file->b, q0, r, q1-q0);
155 		m->data = runetobyte(r, q1-q0);
156 		m->ndata = strlen(m->data);
157 		free(r);
158 		if(m->ndata<messagesize-1024 && plumbsendtofid(plumbsendfid, m) >= 0){
159 			plumbfree(m);
160 			goto Return;
161 		}
162 		plumbfree(m);
163 		/* plumber failed to match; fall through */
164 	}
165 
166 	/* interpret alphanumeric string ourselves */
167 	if(expanded == FALSE)
168 		return;
169 	if(e.name || e.u.at)
170 		openfile(t, &e, FALSE);
171 	else{
172 		if(t->w == nil)
173 			return;
174 		ct = &t->w->body;
175 		if(t->w != ct->w)
176 			winlock(ct->w, 'M');
177 		if(t == ct)
178 			textsetselect(ct, e.q1, e.q1);
179 		n = e.q1 - e.q0;
180 		r = runemalloc(n);
181 		bufread(&t->file->b, e.q0, r, n);
182 		if(search(ct, r, n) && e.jump)
183 			moveto(mousectl, addpt(frptofchar(&ct->fr, ct->fr.p0), Pt(4, ct->fr.font->height-4)));
184 		if(t->w != ct->w)
185 			winunlock(ct->w);
186 		free(r);
187 	}
188 
189    Return:
190 	free(e.name);
191 	free(e.bname);
192 }
193 
194 int
195 plumbgetc(void *a, uint n)
196 {
197 	Rune *r;
198 
199 	r = a;
200 	if(n<0 || n>runestrlen(r))
201 		return 0;
202 	return r[n];
203 }
204 
205 void
206 plumblook(Plumbmsg *m)
207 {
208 	Expand e;
209 	char *addr;
210 	int newwindow;
211 
212 	if(m->ndata >= BUFSIZE){
213 		warning(nil, "insanely long file name (%d bytes) in plumb message (%.32s...)\n", m->ndata, m->data);
214 		return;
215 	}
216 	e.q0 = 0;
217 	e.q1 = 0;
218 	if(m->data[0] == '\0')
219 		return;
220 	e.u.ar = nil;
221 	e.bname = m->data;
222 	e.name = bytetorune(e.bname, &e.nname);
223 	e.jump = TRUE;
224 	e.a0 = 0;
225 	e.a1 = 0;
226 	addr = plumblookup(m->attr, "addr");
227 	if(addr != nil){
228 		e.u.ar = bytetorune(addr, &e.a1);
229 		e.agetc = plumbgetc;
230 	}
231 	newwindow = plumblookup(m->attr, "newwindow") != nil;
232 	openfile(nil, &e, newwindow);
233 	free(e.name);
234 	free(e.u.at);
235 	drawtopwindow();
236 }
237 
238 void
239 plumbshow(Plumbmsg *m)
240 {
241 	Window *w;
242 	Rune rb[256], *r;
243 	int nb, nr;
244 	Runestr rs;
245 	char *name, *p, namebuf[16];
246 
247 	w = makenewwindow(nil);
248 	name = plumblookup(m->attr, "filename");
249 	if(name == nil){
250 		name = namebuf;
251 		nuntitled++;
252 		snprint(namebuf, sizeof namebuf, "Untitled-%d", nuntitled);
253 	}
254 	p = nil;
255 	if(name[0]!='/' && m->wdir!=nil && m->wdir[0]!='\0'){
256 		nb = strlen(m->wdir) + 1 + strlen(name) + 1;
257 		p = emalloc(nb);
258 		snprint(p, nb, "%s/%s", m->wdir, name);
259 		name = p;
260 	}
261 	cvttorunes(name, strlen(name), rb, &nb, &nr, nil);
262 	free(p);
263 	rs = cleanrname(runestr(rb, nr));
264 	winsetname(w, rs.r, rs.nr);
265 	r = runemalloc(m->ndata);
266 	cvttorunes(m->data, m->ndata, r, &nb, &nr, nil);
267 	textinsert(&w->body, 0, r, nr, TRUE);
268 	free(r);
269 	w->body.file->mod = FALSE;
270 	w->dirty = FALSE;
271 	winsettag(w);
272 	textscrdraw(&w->body);
273 	textsetselect(&w->tag, w->tag.file->b.nc, w->tag.file->b.nc);
274 	drawtopwindow();
275 }
276 
277 int
278 search(Text *ct, Rune *r, uint n)
279 {
280 	uint q, nb, maxn;
281 	int around;
282 	Rune *s, *b, *c;
283 
284 	if(n==0 || n>ct->file->b.nc)
285 		return FALSE;
286 	if(2*n > RBUFSIZE){
287 		warning(nil, "string too long\n");
288 		return FALSE;
289 	}
290 	maxn = max(2*n, RBUFSIZE);
291 	s = fbufalloc();
292 	b = s;
293 	nb = 0;
294 	b[nb] = 0;
295 	around = 0;
296 	q = ct->q1;
297 	for(;;){
298 		if(q >= ct->file->b.nc){
299 			q = 0;
300 			around = 1;
301 			nb = 0;
302 			b[nb] = 0;
303 		}
304 		if(nb > 0){
305 			c = runestrchr(b, r[0]);
306 			if(c == nil){
307 				q += nb;
308 				nb = 0;
309 				b[nb] = 0;
310 				if(around && q>=ct->q1)
311 					break;
312 				continue;
313 			}
314 			q += (c-b);
315 			nb -= (c-b);
316 			b = c;
317 		}
318 		/* reload if buffer covers neither string nor rest of file */
319 		if(nb<n && nb!=ct->file->b.nc-q){
320 			nb = ct->file->b.nc-q;
321 			if(nb >= maxn)
322 				nb = maxn-1;
323 			bufread(&ct->file->b, q, s, nb);
324 			b = s;
325 			b[nb] = '\0';
326 		}
327 		/* this runeeq is fishy but the null at b[nb] makes it safe */
328 		if(runeeq(b, n, r, n)==TRUE){
329 			if(ct->w){
330 				textshow(ct, q, q+n, 1);
331 				winsettag(ct->w);
332 			}else{
333 				ct->q0 = q;
334 				ct->q1 = q+n;
335 			}
336 			seltext = ct;
337 			fbuffree(s);
338 			return TRUE;
339 		}
340 		if(around && q>=ct->q1)
341 			break;
342 		--nb;
343 		b++;
344 		q++;
345 	}
346 	fbuffree(s);
347 	return FALSE;
348 }
349 
350 int
351 isfilec(Rune r)
352 {
353 	static Rune Lx[] = { '.', '-', '+', '/', ':', 0 };
354 	if(isalnum(r))
355 		return TRUE;
356 	if(runestrchr(Lx, r))
357 		return TRUE;
358 	return FALSE;
359 }
360 
361 /* Runestr wrapper for cleanname */
362 Runestr
363 cleanrname(Runestr rs)
364 {
365 	char *s;
366 	int nb, nulls;
367 
368 	s = runetobyte(rs.r, rs.nr);
369 	cleanname(s);
370 	cvttorunes(s, strlen(s), rs.r, &nb, &rs.nr, &nulls);
371 	free(s);
372 	return rs;
373 }
374 
375 Runestr
376 includefile(Rune *dir, Rune *file, int nfile)
377 {
378 	int m, n;
379 	char *a;
380 	Rune *r;
381 	static Rune Lslash[] = { '/', 0 };
382 
383 	m = runestrlen(dir);
384 	a = emalloc((m+1+nfile)*UTFmax+1);
385 	sprint(a, "%S/%.*S", dir, nfile, file);
386 	n = access(a, 0);
387 	free(a);
388 	if(n < 0)
389 		return runestr(nil, 0);
390 	r = runemalloc(m+1+nfile);
391 	runemove(r, dir, m);
392 	runemove(r+m, Lslash, 1);
393 	runemove(r+m+1, file, nfile);
394 	free(file);
395 	return cleanrname(runestr(r, m+1+nfile));
396 }
397 
398 static	Rune	*objdir;
399 
400 Runestr
401 includename(Text *t, Rune *r, int n)
402 {
403 	Window *w;
404 	char buf[128];
405 	Rune Lsysinclude[] = { '/', 's', 'y', 's', '/', 'i', 'n', 'c', 'l', 'u', 'd', 'e', 0 };
406 	Rune Lusrinclude[] = { '/', 'u', 's', 'r', '/', 'i', 'n', 'c', 'l', 'u', 'd', 'e', 0 };
407 	Rune Lusrlocalinclude[] = { '/', 'u', 's', 'r', '/', 'l', 'o', 'c', 'a', 'l', 
408 			'/', 'i', 'n', 'c', 'l', 'u', 'd', 'e', 0 };
409 	Rune Lusrlocalplan9include[] = { '/', 'u', 's', 'r', '/', 'l', 'o', 'c', 'a', 'l', 
410 			'/', 'p', 'l', 'a', 'n', '9', '/', 'i', 'n', 'c', 'l', 'u', 'd', 'e', 0 };
411 	Runestr file;
412 	int i;
413 
414 	if(objdir==nil && objtype!=nil){
415 		sprint(buf, "/%s/include", objtype);
416 		objdir = bytetorune(buf, &i);
417 		objdir = runerealloc(objdir, i+1);
418 		objdir[i] = '\0';	
419 	}
420 
421 	w = t->w;
422 	if(n==0 || r[0]=='/' || w==nil)
423 		goto Rescue;
424 	if(n>2 && r[0]=='.' && r[1]=='/')
425 		goto Rescue;
426 	file.r = nil;
427 	file.nr = 0;
428 	for(i=0; i<w->nincl && file.r==nil; i++)
429 		file = includefile(w->incl[i], r, n);
430 
431 	if(file.r == nil)
432 		file = includefile(Lsysinclude, r, n);
433 	if(file.r == nil)
434 		file = includefile(Lusrlocalplan9include, r, n);
435 	if(file.r == nil)
436 		file = includefile(Lusrlocalinclude, r, n);
437 	if(file.r == nil)
438 		file = includefile(Lusrinclude, r, n);
439 	if(file.r==nil && objdir!=nil)
440 		file = includefile(objdir, r, n);
441 	if(file.r == nil)
442 		goto Rescue;
443 	return file;
444 
445     Rescue:
446 	return runestr(r, n);
447 }
448 
449 Runestr
450 dirname(Text *t, Rune *r, int n)
451 {
452 	Rune *b, c;
453 	uint m, nt;
454 	int slash;
455 	Runestr tmp;
456 
457 	b = nil;
458 	if(t==nil || t->w==nil)
459 		goto Rescue;
460 	if(dodollarsigns && n>=1 && r[0]=='$')
461 		expandenv(&r, (uint*)&n);
462 	nt = t->w->tag.file->b.nc;
463 	if(nt == 0)
464 		goto Rescue;
465 	if(n>=1 && r[0]=='/')
466 		goto Rescue;
467 	b = runemalloc(nt+n+1);
468 	bufread(&t->w->tag.file->b, 0, b, nt);
469 	slash = -1;
470 	for(m=0; m<nt; m++){
471 		c = b[m];
472 		if(c == '/')
473 			slash = m;
474 		if(c==' ' || c=='\t')
475 			break;
476 	}
477 	if(slash < 0)
478 		goto Rescue;
479 	slash++;
480 	if(dodollarsigns && expandenv(&b, (uint*)&slash))
481 		b = runerealloc(b, slash+n);
482 	runemove(b+slash, r, n);
483 	free(r);
484 	return cleanrname(runestr(b, slash+n));
485 
486     Rescue:
487 	free(b);
488 	tmp = runestr(r, n);
489 	if(r)
490 		return cleanrname(tmp);
491 	return tmp;
492 }
493 
494 int
495 expandfile(Text *t, uint q0, uint q1, Expand *e)
496 {
497 	int i, n, nname, colon, eval;
498 	uint amin, amax;
499 	Rune *r, c;
500 	Window *w;
501 	Runestr rs;
502 
503 	amax = q1;
504 	if(q1 == q0){
505 		colon = -1;
506 		while(q1<t->file->b.nc && isfilec(c=textreadc(t, q1))){
507 			if(c == ':'){
508 				colon = q1;
509 				break;
510 			}
511 			q1++;
512 		}
513 		while(q0>0 && (isfilec(c=textreadc(t, q0-1)) || isaddrc(c) || isregexc(c))){
514 			q0--;
515 			if(colon<0 && c==':')
516 				colon = q0;
517 		}
518 		/*
519 		 * if it looks like it might begin file: , consume address chars after :
520 		 * otherwise terminate expansion at :
521 		 */
522 		if(colon >= 0){
523 			q1 = colon;
524 			if(colon<t->file->b.nc-1 && isaddrc(textreadc(t, colon+1))){
525 				q1 = colon+1;
526 				while(q1<t->file->b.nc && isaddrc(textreadc(t, q1)))
527 					q1++;
528 			}
529 		}
530 		if(q1 > q0)
531 			if(colon >= 0){	/* stop at white space */
532 				for(amax=colon+1; amax<t->file->b.nc; amax++)
533 					if((c=textreadc(t, amax))==' ' || c=='\t' || c=='\n')
534 						break;
535 			}else
536 				amax = t->file->b.nc;
537 	}
538 	amin = amax;
539 	e->q0 = q0;
540 	e->q1 = q1;
541 	n = q1-q0;
542 	if(n == 0)
543 		return FALSE;
544 	/* see if it's a file name */
545 	r = runemalloc(n+1);	/* +1 for possible $ below */
546 	bufread(&t->file->b, q0, r, n);
547 	/* first, does it have bad chars? */
548 	nname = -1;
549 	for(i=0; i<n; i++){
550 		c = r[i];
551 		if(c==':' && nname<0){
552 			if(q0+i+1<t->file->b.nc && (i==n-1 || isaddrc(textreadc(t, q0+i+1))))
553 				amin = q0+i;
554 			else
555 				goto Isntfile;
556 			nname = i;
557 		}
558 	}
559 	if(nname == -1)
560 		nname = n;
561 	for(i=0; i<nname; i++){
562 		if(dodollarsigns && i==0 && r[0]=='$')
563 			continue;
564 		if(!isfilec(r[i]))
565 			goto Isntfile;
566 	}
567 	/*
568 	 * See if it's a file name in <>, and turn that into an include
569 	 * file name if so.  Should probably do it for "" too, but that's not
570 	 * restrictive enough syntax and checking for a #include earlier on the
571 	 * line would be silly.
572 	 */
573 	if(q0>0 && textreadc(t, q0-1)=='<' && q1<t->file->b.nc && textreadc(t, q1)=='>'){
574 		rs = includename(t, r, nname);
575 		r = rs.r;
576 		nname = rs.nr;
577 	}
578 	else if(amin == q0)
579 		goto Isfile;
580 	else{
581 		if(dodollarsigns && r[0] == '$')
582 			expandenv(&r, (uint*)&nname);
583 		else{
584 			rs = dirname(t, r, nname);
585 			r = rs.r;
586 			nname = rs.nr;
587 		}
588 	}
589 	e->bname = runetobyte(r, nname);
590 	/* if it's already a window name, it's a file */
591 	w = lookfile(r, nname);
592 	if(w != nil)
593 		goto Isfile;
594 	/* if it's the name of a file, it's a file */
595 	if(access(e->bname, 0) < 0){
596 		free(e->bname);
597 		e->bname = nil;
598 		goto Isntfile;
599 	}
600 
601   Isfile:
602 	e->name = r;
603 	e->nname = nname;
604 	e->u.at = t;
605 	e->a0 = amin+1;
606 	eval = FALSE;
607 	address(TRUE, nil, range(-1,-1), range(0,0), t, e->a0, amax, tgetc, &eval, (uint*)&e->a1);
608 	return TRUE;
609 
610    Isntfile:
611 	free(r);
612 	return FALSE;
613 }
614 
615 int
616 expand(Text *t, uint q0, uint q1, Expand *e)
617 {
618 	memset(e, 0, sizeof *e);
619 	e->agetc = tgetc;
620 	/* if in selection, choose selection */
621 	e->jump = TRUE;
622 	if(q1==q0 && t->q1>t->q0 && t->q0<=q0 && q0<=t->q1){
623 		q0 = t->q0;
624 		q1 = t->q1;
625 		if(t->what == Tag)
626 			e->jump = FALSE;
627 	}
628 
629 	if(expandfile(t, q0, q1, e))
630 		return TRUE;
631 	if(q0 == q1){
632 		while(q1<t->file->b.nc && isalnum(textreadc(t, q1)))
633 			q1++;
634 		while(q0>0 && isalnum(textreadc(t, q0-1)))
635 			q0--;
636 	}
637 	e->q0 = q0;
638 	e->q1 = q1;
639 	return q1 > q0;
640 }
641 
642 Window*
643 lookfile(Rune *s, int n)
644 {
645 	int i, j, k;
646 	Window *w;
647 	Column *c;
648 	Text *t;
649 
650 	/* avoid terminal slash on directories */
651 	if(n>1 && s[n-1] == '/')
652 		--n;
653 	for(j=0; j<row.ncol; j++){
654 		c = row.col[j];
655 		for(i=0; i<c->nw; i++){
656 			w = c->w[i];
657 			t = &w->body;
658 			k = t->file->nname;
659 			if(k>1 && t->file->name[k-1] == '/')
660 				k--;
661 			if(runeeq(t->file->name, k, s, n)){
662 				w = w->body.file->curtext->w;
663 				if(w->col != nil)	/* protect against race deleting w */
664 					return w;
665 			}
666 		}
667 	}
668 	return nil;
669 }
670 
671 Window*
672 lookid(int id, int dump)
673 {
674 	int i, j;
675 	Window *w;
676 	Column *c;
677 
678 	for(j=0; j<row.ncol; j++){
679 		c = row.col[j];
680 		for(i=0; i<c->nw; i++){
681 			w = c->w[i];
682 			if(dump && w->dumpid == id)
683 				return w;
684 			if(!dump && w->id == id)
685 				return w;
686 		}
687 	}
688 	return nil;
689 }
690 
691 
692 Window*
693 openfile(Text *t, Expand *e, int newwindow)
694 {
695 	Range r;
696 	Window *w, *ow;
697 	int eval, i, n;
698 	Rune *rp;
699 	uint dummy;
700 
701 	r.q0 = 0;
702 	r.q1 = 0;
703 	if(e->nname == 0){
704 		w = t->w;
705 		if(w == nil)
706 			return nil;
707 	}else
708 		w = lookfile(e->name, e->nname);
709 	if(w){
710 		if(newwindow==TRUE && !w->isdir)
711 			w = coladd(w->col, nil, w, -1);
712 		t = &w->body;
713 		if(!t->col->safe && t->fr.maxlines==0) /* window is obscured by full-column window */
714 			colgrow(t->col, t->col->w[0], 1);
715 	}else{
716 		ow = nil;
717 		if(t)
718 			ow = t->w;
719 		w = makenewwindow(t);
720 		t = &w->body;
721 		winsetname(w, e->name, e->nname);
722 		textload(t, 0, e->bname, 1);
723 		t->file->mod = FALSE;
724 		t->w->dirty = FALSE;
725 		winsettag(t->w);
726 		textsetselect(&t->w->tag, t->w->tag.file->b.nc, t->w->tag.file->b.nc);
727 		if(ow != nil){
728 			for(i=ow->nincl; --i>=0; ){
729 				n = runestrlen(ow->incl[i]);
730 				rp = runemalloc(n);
731 				runemove(rp, ow->incl[i], n);
732 				winaddincl(w, rp, n);
733 			}
734 			w->autoindent = ow->autoindent;
735 		}else
736 			w->autoindent = globalautoindent;
737 	}
738 	if(e->a1 == e->a0)
739 		eval = FALSE;
740 	else{
741 		eval = TRUE;
742 		r = address(TRUE, t, range(-1,-1), range(t->q0, t->q1), e->u.at, e->a0, e->a1, e->agetc, &eval, &dummy);
743 		if(eval == FALSE)
744 			e->jump = FALSE;	/* don't jump if invalid address */
745 	}
746 	if(eval == FALSE){
747 		r.q0 = t->q0;
748 		r.q1 = t->q1;
749 	}
750 	textshow(t, r.q0, r.q1, 1);
751 	winsettag(t->w);
752 	seltext = t;
753 	if(e->jump)
754 		moveto(mousectl, addpt(frptofchar(&t->fr, t->fr.p0), Pt(4, font->height-4)));
755 	return w;
756 }
757 
758 void
759 new(Text *et, Text *t, Text *argt, int flag1, int flag2, Rune *arg, int narg)
760 {
761 	int ndone;
762 	Rune *a, *f;
763 	int na, nf;
764 	Expand e;
765 	Runestr rs;
766 
767 	getarg(argt, FALSE, TRUE, &a, &na);
768 	if(a){
769 		new(et, t, nil, flag1, flag2, a, na);
770 		if(narg == 0)
771 			return;
772 	}
773 	/* loop condition: *arg is not a blank */
774 	for(ndone=0; ; ndone++){
775 		a = findbl(arg, narg, &na);
776 		if(a == arg){
777 			if(ndone==0 && et->col!=nil)
778 				winsettag(coladd(et->col, nil, nil, -1));
779 			break;
780 		}
781 		nf = narg-na;
782 		f = runemalloc(nf);
783 		runemove(f, arg, nf);
784 		rs = dirname(et, f, nf);
785 		f = rs.r;
786 		nf = rs.nr;
787 		memset(&e, 0, sizeof e);
788 		e.name = f;
789 		e.nname = nf;
790 		e.bname = runetobyte(f, nf);
791 		e.jump = TRUE;
792 		openfile(et, &e, FALSE);
793 		free(f);
794 		free(e.bname);
795 		arg = skipbl(a, na, &narg);
796 	}
797 }