void
scrollone(Flayer *l, int but){
Text *t=(Text *)l->user1;
long tot = scrtotal(l);
long p0, p1;
if (but == 1) {
/* Scroll backwards one line by moving to a point where
a character one before the start character is displayed.
Note that this is an asynchronous operation; we send a
message to sam to ask it to work out the position, and
it sends us back a reposition message.
*/
if (l->origin > 0)
hmoveto(t->tag, l->origin - 1);
}else if(but == 3) {
/* Scroll forwards one line by setting the origin to one
line beyond the current origin, using the font height.
We only scroll if the new position is before the last
character, so the last line is always visible on screen.
Also: we stop scrolling up once the end of the file is
visible on the screen (this is the p1 check). <cks> may
reconsider this at some point.
*/
p0 = l->origin + frcharofpt(&l->f, Pt(l->f.r.min.x, l->f.r.min.y + l->f.fheight));
p1 = l->origin + frcharofpt(&l->f, Pt(l->f.r.min.x, l->f.r.max.y - l->f.fheight/2));
if (p0 < tot && p1 < tot)
horigin(t->tag, p0);
}
}
void
textframescroll(Text *t, int dl)
{
uint q0;
if(dl == 0){
scrsleep(100);
return;
}
if(dl < 0){
q0 = textbacknl(t, t->org, -dl);
if(selectq > t->org+t->p0)
textsetselect(t, t->org+t->p0, selectq);
else
textsetselect(t, selectq, t->org+t->p0);
}else{
if(t->org+t->nchars == t->file->nc)
return;
q0 = t->org+frcharofpt(t, Pt(t->r.min.x, t->r.min.y+dl*t->font->height));
if(selectq > t->org+t->p1)
textsetselect(t, t->org+t->p1, selectq);
else
textsetselect(t, selectq, t->org+t->p1);
}
textsetorigin(t, q0, TRUE);
}
void
textselect(Text *t)
{
uint q0, q1;
int b, x, y;
int state;
selecttext = t;
/*
* To have double-clicking and chording, we double-click
* immediately if it might make sense.
*/
b = mouse->buttons;
q0 = t->q0;
q1 = t->q1;
selectq = t->org+frcharofpt(t, mouse->xy);
if(clicktext==t && mouse->msec-clickmsec<500)
if(q0==q1 && selectq==q0){
textdoubleclick(t, &q0, &q1);
textsetselect(t, q0, q1);
flushimage(display, 1);
x = mouse->xy.x;
y = mouse->xy.y;
/* stay here until something interesting happens */
do
readmouse(mousectl);
while(mouse->buttons==b && abs(mouse->xy.x-x)<3 && abs(mouse->xy.y-y)<3);
mouse->xy.x = x; /* in case we're calling frselect */
mouse->xy.y = y;
q0 = t->q0; /* may have changed */
q1 = t->q1;
selectq = q0;
}
if(mouse->buttons == b){
t->Frame.scroll = framescroll;
frselect(t, mousectl);
/* horrible botch: while asleep, may have lost selection altogether */
if(selectq > t->file->nc)
selectq = t->org + t->p0;
t->Frame.scroll = nil;
if(selectq < t->org)
q0 = selectq;
else
q0 = t->org + t->p0;
if(selectq > t->org+t->nchars)
q1 = selectq;
else
q1 = t->org+t->p1;
}
if(q0 == q1){
if(q0==t->q0 && clicktext==t && mouse->msec-clickmsec<500){
textdoubleclick(t, &q0, &q1);
clicktext = nil;
}else{
clicktext = t;
clickmsec = mouse->msec;
}
}else
clicktext = nil;
textsetselect(t, q0, q1);
flushimage(display, 1);
state = 0; /* undo when possible; +1 for cut, -1 for paste */
while(mouse->buttons){
mouse->msec = 0;
b = mouse->buttons;
if((b&1) && (b&6)){
if(state==0 && t->what==Body){
seq++;
filemark(t->w->body.file);
}
if(b & 2){
if(state==-1 && t->what==Body){
winundo(t->w, TRUE);
textsetselect(t, q0, t->q0);
state = 0;
}else if(state != 1){
cut(t, t, nil, TRUE, TRUE, nil, 0);
state = 1;
}
}else{
if(state==1 && t->what==Body){
winundo(t->w, TRUE);
textsetselect(t, q0, t->q1);
state = 0;
}else if(state != -1){
paste(t, t, nil, TRUE, FALSE, nil, 0);
state = -1;
}
}
textscrdraw(t);
clearmouse();
}
flushimage(display, 1);
while(mouse->buttons == b)
readmouse(mousectl);
clicktext = nil;
}
}
void
texttype(Text *t, Rune r)
{
uint q0, q1;
int nnb, nb, n, i;
int nr;
Rune *rp;
Text *u;
if(t->what!=Body && r=='\n')
return;
nr = 1;
rp = &r;
switch(r){
case Kleft:
if(t->q0 > 0){
typecommit(t);
textshow(t, t->q0-1, t->q0-1, TRUE);
}
return;
case Kright:
if(t->q1 < t->file->nc){
typecommit(t);
textshow(t, t->q1+1, t->q1+1, TRUE);
}
return;
case Kdown:
n = t->maxlines/3;
goto case_Down;
case Kscrollonedown:
n = mousescrollsize(t->maxlines);
if(n <= 0)
n = 1;
goto case_Down;
case Kpgdown:
n = 2*t->maxlines/3;
case_Down:
q0 = t->org+frcharofpt(t, Pt(t->r.min.x, t->r.min.y+n*t->font->height));
textsetorigin(t, q0, TRUE);
return;
case Kup:
n = t->maxlines/3;
goto case_Up;
case Kscrolloneup:
n = mousescrollsize(t->maxlines);
goto case_Up;
case Kpgup:
n = 2*t->maxlines/3;
case_Up:
q0 = textbacknl(t, t->org, n);
textsetorigin(t, q0, TRUE);
return;
case Khome:
typecommit(t);
textshow(t, 0, 0, FALSE);
return;
case Kend:
typecommit(t);
textshow(t, t->file->nc, t->file->nc, FALSE);
return;
case 0x01: /* ^A: beginning of line */
typecommit(t);
/* go to where ^U would erase, if not already at BOL */
nnb = 0;
if(t->q0>0 && textreadc(t, t->q0-1)!='\n')
nnb = textbswidth(t, 0x15);
textshow(t, t->q0-nnb, t->q0-nnb, TRUE);
return;
case 0x05: /* ^E: end of line */
typecommit(t);
q0 = t->q0;
while(q0<t->file->nc && textreadc(t, q0)!='\n')
q0++;
textshow(t, q0, q0, TRUE);
return;
}
if(t->what == Body){
seq++;
filemark(t->file);
}
if(t->q1 > t->q0){
if(t->ncache != 0)
error("text.type");
cut(t, t, nil, TRUE, TRUE, nil, 0);
t->eq0 = ~0;
}
textshow(t, t->q0, t->q0, 1);
switch(r){
case 0x06:
case Kins:
rp = textcomplete(t);
if(rp == nil)
return;
nr = runestrlen(rp);
break; /* fall through to normal insertion case */
case 0x1B:
if(t->eq0 != ~0)
textsetselect(t, t->eq0, t->q0);
if(t->ncache > 0)
typecommit(t);
return;
case 0x08: /* ^H: erase character */
case 0x15: /* ^U: erase line */
case 0x17: /* ^W: erase word */
if(t->q0 == 0) /* nothing to erase */
return;
nnb = textbswidth(t, r);
q1 = t->q0;
q0 = q1-nnb;
/* if selection is at beginning of window, avoid deleting invisible text */
if(q0 < t->org){
q0 = t->org;
nnb = q1-q0;
}
if(nnb <= 0)
return;
for(i=0; i<t->file->ntext; i++){
u = t->file->text[i];
u->nofill = TRUE;
nb = nnb;
n = u->ncache;
if(n > 0){
if(q1 != u->cq0+n)
error("text.type backspace");
if(n > nb)
n = nb;
u->ncache -= n;
textdelete(u, q1-n, q1, FALSE);
nb -= n;
}
if(u->eq0==q1 || u->eq0==~0)
u->eq0 = q0;
if(nb && u==t)
textdelete(u, q0, q0+nb, TRUE);
if(u != t)
textsetselect(u, u->q0, u->q1);
else
textsetselect(t, q0, q0);
u->nofill = FALSE;
}
for(i=0; i<t->file->ntext; i++)
textfill(t->file->text[i]);
return;
case '\n':
if(t->w->autoindent){
/* find beginning of previous line using backspace code */
nnb = textbswidth(t, 0x15); /* ^U case */
rp = runemalloc(nnb + 1);
nr = 0;
rp[nr++] = r;
for(i=0; i<nnb; i++){
r = textreadc(t, t->q0-nnb+i);
if(r != ' ' && r != '\t')
break;
rp[nr++] = r;
}
}
break; /* fall through to normal code */
}
/* otherwise ordinary character; just insert, typically in caches of all texts */
for(i=0; i<t->file->ntext; i++){
u = t->file->text[i];
if(u->eq0 == ~0)
u->eq0 = t->q0;
if(u->ncache == 0)
u->cq0 = t->q0;
else if(t->q0 != u->cq0+u->ncache)
error("text.type cq1");
textinsert(u, t->q0, rp, nr, FALSE);
if(u != t)
textsetselect(u, u->q0, u->q1);
if(u->ncache+nr > u->ncachealloc){
u->ncachealloc += 10 + nr;
u->cache = runerealloc(u->cache, u->ncachealloc);
}
runemove(u->cache+u->ncache, rp, nr);
u->ncache += nr;
}
if(rp != &r)
free(rp);
textsetselect(t, t->q0+nr, t->q0+nr);
if(r=='\n' && t->w!=nil)
wincommit(t->w, t);
}
uint
xselect(Frame *f, Mousectl *mc, Image *col, uint *p1p) /* when called, button is down */
{
uint p0, p1, q, tmp;
ulong msec;
Point mp, pt0, pt1, qt;
int reg, b;
mp = mc->xy;
b = mc->buttons;
msec = mc->msec;
/* remove tick */
if(f->p0 == f->p1)
frtick(f, frptofchar(f, f->p0), 0);
p0 = p1 = frcharofpt(f, mp);
pt0 = frptofchar(f, p0);
pt1 = frptofchar(f, p1);
reg = 0;
frtick(f, pt0, 1);
do{
q = frcharofpt(f, mc->xy);
if(p1 != q){
if(p0 == p1)
frtick(f, pt0, 0);
if(reg != region(q, p0)){ /* crossed starting point; reset */
if(reg > 0)
selrestore(f, pt0, p0, p1);
else if(reg < 0)
selrestore(f, pt1, p1, p0);
p1 = p0;
pt1 = pt0;
reg = region(q, p0);
if(reg == 0)
frdrawsel0(f, pt0, p0, p1, col, display->white);
}
qt = frptofchar(f, q);
if(reg > 0){
if(q > p1)
frdrawsel0(f, pt1, p1, q, col, display->white);
else if(q < p1)
selrestore(f, qt, q, p1);
}else if(reg < 0){
if(q > p1)
selrestore(f, pt1, p1, q);
else
frdrawsel0(f, qt, q, p1, col, display->white);
}
p1 = q;
pt1 = qt;
}
if(p0 == p1)
frtick(f, pt0, 1);
flushimage(f->display, 1);
readmouse(mc);
}while(mc->buttons == b);
if(mc->msec-msec < DELAY && p0!=p1
&& abs(mp.x-mc->xy.x)<MINMOVE
&& abs(mp.y-mc->xy.y)<MINMOVE) {
if(reg > 0)
selrestore(f, pt0, p0, p1);
else if(reg < 0)
selrestore(f, pt1, p1, p0);
p1 = p0;
}
if(p1 < p0){
tmp = p0;
p0 = p1;
p1 = tmp;
}
pt0 = frptofchar(f, p0);
if(p0 == p1)
frtick(f, pt0, 0);
selrestore(f, pt0, p0, p1);
/* restore tick */
if(f->p0 == f->p1)
frtick(f, frptofchar(f, f->p0), 1);
flushimage(f->display, 1);
*p1p = p1;
return p0;
}
void
wkeyctl(Window *w, Rune r)
{
uint q0;
if(r == 0)
return;
if(w->deleted)
return;
fprint(2, "wkyctl: skipping all ctl chars\n");
#if 0
uint q0 ,q1;
int n, nb, nr;
Rune *rp;
int *notefd;
/* navigation keys work only when mouse is not open */
if(!w->mouseopen)
switch(r){
case Kdown:
n = w->maxlines/3;
goto case_Down;
case Kscrollonedown:
n = mousescrollsize(w->maxlines);
if(n <= 0)
n = 1;
goto case_Down;
case Kpgdown:
n = 2*w->maxlines/3;
case_Down:
q0 = w->org+frcharofpt(w, Pt(w->Frame.r.min.x, w->Frame.r.min.y+n*w->font->height));
wsetorigin(w, q0, TRUE);
return;
case Kup:
n = w->maxlines/3;
goto case_Up;
case Kscrolloneup:
n = mousescrollsize(w->maxlines);
if(n <= 0)
n = 1;
goto case_Up;
case Kpgup:
n = 2*w->maxlines/3;
case_Up:
q0 = wbacknl(w, w->org, n);
wsetorigin(w, q0, TRUE);
return;
case Kleft:
if(w->q0 > 0){
q0 = w->q0-1;
wsetselect(w, q0, q0);
wshow(w, q0);
}
return;
case Kright:
if(w->q1 < w->nr){
q1 = w->q1+1;
wsetselect(w, q1, q1);
wshow(w, q1);
}
return;
case Khome:
wshow(w, 0);
return;
case Kend:
wshow(w, w->nr);
return;
case 0x01: /* ^A: beginning of line */
if(w->q0==0 || w->q0==w->qh || w->run[w->q0-1]=='\n')
return;
nb = wbswidth(w, 0x15 /* ^U */);
wsetselect(w, w->q0-nb, w->q0-nb);
wshow(w, w->q0);
return;
case 0x05: /* ^E: end of line */
q0 = w->q0;
while(q0 < w->nr && w->run[q0]!='\n')
q0++;
wsetselect(w, q0, q0);
wshow(w, w->q0);
return;
}
if(w->rawing && (w->q0==w->nr || w->mouseopen)){
waddraw(w, &r, 1);
return;
}
if(r==0x1B || (w->holding && r==0x7F)){ /* toggle hold */
if(w->holding)
--w->holding;
else
w->holding++;
wrepaint(w);
if(r == 0x1B)
return;
}
if(r != 0x7F){
wsnarf(w);
wcut(w);
}
switch(r){
case 0x7F: /* send interrupt */
w->qh = w->nr;
wshow(w, w->qh);
notefd = emalloc(sizeof(int));
*notefd = w->notefd;
proccreate(interruptproc, notefd, 4096);
return;
case 0x06: /* ^F: file name completion */
case Kins: /* Insert: file name completion */
rp = namecomplete(w);
if(rp == nil)
return;
nr = runestrlen(rp);
q0 = w->q0;
q0 = winsert(w, rp, nr, q0);
wshow(w, q0+nr);
free(rp);
return;
case 0x08: /* ^H: erase character */
case 0x15: /* ^U: erase line */
case 0x17: /* ^W: erase word */
if(w->q0==0 || w->q0==w->qh)
return;
nb = wbswidth(w, r);
q1 = w->q0;
q0 = q1-nb;
if(q0 < w->org){
q0 = w->org;
nb = q1-q0;
}
if(nb > 0){
wdelete(w, q0, q0+nb);
wsetselect(w, q0, q0);
}
return;
}
wshow(w, q0+1);
#endif
/* otherwise ordinary character; just insert */
q0 = w->q0;
q0 = winsert(w, &r, 1, q0);
}
void
texttype(Text *t, Rune r)
{
uint q0, q1;
int nb, n;
int nr;
Rune *rp;
if(t->what!=Textarea && r=='\n'){
if(t->what==Urltag)
get(t, t, XXX, XXX, nil, 0);
return;
}
if(t->what==Tag && (r==Kscrollonedown || r==Kscrolloneup))
return;
nr = 1;
rp = &r;
switch(r){
case Kleft:
if(t->q0 > 0)
textshow(t, t->q0-1, t->q0-1, TRUE);
return;
case Kright:
if(t->q1 < t->rs.nr)
textshow(t, t->q1+1, t->q1+1, TRUE);
return;
case Kdown:
n = t->maxlines/3;
goto case_Down;
case Kscrollonedown:
n = mousescrollsize(t->maxlines);
if(n <= 0)
n = 1;
goto case_Down;
case Kpgdown:
n = 2*t->maxlines/3;
case_Down:
q0 = t->org+frcharofpt(t, Pt(t->r.min.x, t->r.min.y+n*t->font->height));
textsetorigin(t, q0, TRUE);
return;
case Kup:
n = t->maxlines/3;
goto case_Up;
case Kscrolloneup:
n = mousescrollsize(t->maxlines);
goto case_Up;
case Kpgup:
n = 2*t->maxlines/3;
case_Up:
q0 = textbacknl(t, t->org, n);
textsetorigin(t, q0, TRUE);
return;
case Khome:
textshow(t, 0, 0, FALSE);
return;
case Kend:
textshow(t, t->rs.nr, t->rs.nr, FALSE);
return;
case 0x01: /* ^A: beginning of line */
/* go to where ^U would erase, if not already at BOL */
nb = 0;
if(t->q0>0 && t->rs.r[t->q0-1]!='\n')
nb = textbswidth(t, 0x15);
textshow(t, t->q0-nb, t->q0-nb, TRUE);
return;
case 0x05: /* ^E: end of line */
q0 = t->q0;
while(q0<t->rs.nr && t->rs.r[q0]!='\n')
q0++;
textshow(t, q0, q0, TRUE);
return;
}
if(t->q1 > t->q0)
cut(t, t, TRUE, TRUE, nil, 0);
textshow(t, t->q0, t->q0, TRUE);
switch(r){
case 0x08: /* ^H: erase character */
case 0x15: /* ^U: erase line */
case 0x17: /* ^W: erase word */
if(t->q0 == 0) /* nothing to erase */
return;
nb = textbswidth(t, r);
q1 = t->q0;
q0 = q1-nb;
/* if selection is at beginning of window, avoid deleting invisible text */
if(q0 < t->org){
q0 = t->org;
nb = q1-q0;
}
if(nb > 0){
textdelete(t, q0, q0+nb);
textsetselect(t, q0, q0);
}
return;
}
/* otherwise ordinary character; just insert */
textinsert(t, t->q0, &r, 1);
if(rp != &r)
free(rp);
textsetselect(t, t->q0+nr, t->q0+nr);
if(t->what == Textarea)
textscrdraw(t);
}
void
texttype(Text *t, Rune r)
{
uint q0, q1;
int nnb, nb, n, i;
int nr;
Rune *rp;
Text *u;
if(t->what!=Body && t->what!=Tag && r=='\n')
return;
if(t->what == Tag)
t->w->tagsafe = FALSE;
nr = 1;
rp = &r;
switch(r){
case Kleft:
typecommit(t);
if(t->q0 > 0)
textshow(t, t->q0-1, t->q0-1, TRUE);
return;
case Kright:
typecommit(t);
if(t->q1 < t->file->b.nc)
textshow(t, t->q1+1, t->q1+1, TRUE);
return;
case Kdown:
if(t->what == Tag)
goto Tagdown;
n = t->fr.maxlines/3;
goto case_Down;
case Kscrollonedown:
if(t->what == Tag)
goto Tagdown;
n = mousescrollsize(t->fr.maxlines);
if(n <= 0)
n = 1;
goto case_Down;
case Kpgdown:
n = 2*t->fr.maxlines/3;
case_Down:
q0 = t->org+frcharofpt(&t->fr, Pt(t->fr.r.min.x, t->fr.r.min.y+n*t->fr.font->height));
textsetorigin(t, q0, TRUE);
return;
case Kup:
if(t->what == Tag)
goto Tagup;
n = t->fr.maxlines/3;
goto case_Up;
case Kscrolloneup:
if(t->what == Tag)
goto Tagup;
n = mousescrollsize(t->fr.maxlines);
goto case_Up;
case Kpgup:
n = 2*t->fr.maxlines/3;
case_Up:
q0 = textbacknl(t, t->org, n);
textsetorigin(t, q0, TRUE);
return;
case Khome:
typecommit(t);
if(t->org > t->iq1) {
q0 = textbacknl(t, t->iq1, 1);
textsetorigin(t, q0, TRUE);
} else
textshow(t, 0, 0, FALSE);
return;
case Kend:
typecommit(t);
if(t->iq1 > t->org+t->fr.nchars) {
if(t->iq1 > t->file->b.nc) {
// should not happen, but does. and it will crash textbacknl.
t->iq1 = t->file->b.nc;
}
q0 = textbacknl(t, t->iq1, 1);
textsetorigin(t, q0, TRUE);
} else
textshow(t, t->file->b.nc, t->file->b.nc, FALSE);
return;
case 0x01: /* ^A: beginning of line */
typecommit(t);
/* go to where ^U would erase, if not already at BOL */
nnb = 0;
if(t->q0>0 && textreadc(t, t->q0-1)!='\n')
nnb = textbswidth(t, 0x15);
textshow(t, t->q0-nnb, t->q0-nnb, TRUE);
return;
case 0x05: /* ^E: end of line */
typecommit(t);
q0 = t->q0;
while(q0<t->file->b.nc && textreadc(t, q0)!='\n')
q0++;
textshow(t, q0, q0, TRUE);
return;
case Kcmd+'c': /* %C: copy */
typecommit(t);
cut(t, t, nil, TRUE, FALSE, nil, 0);
return;
case Kcmd+'z': /* %Z: undo */
typecommit(t);
undo(t, nil, nil, TRUE, 0, nil, 0);
return;
Tagdown:
/* expand tag to show all text */
if(!t->w->tagexpand){
t->w->tagexpand = TRUE;
winresize(t->w, t->w->r, FALSE, TRUE);
}
return;
Tagup:
/* shrink tag to single line */
if(t->w->tagexpand){
t->w->tagexpand = FALSE;
t->w->taglines = 1;
winresize(t->w, t->w->r, FALSE, TRUE);
}
return;
}
if(t->what == Body){
seq++;
filemark(t->file);
}
/* cut/paste must be done after the seq++/filemark */
switch(r){
case Kcmd+'x': /* %X: cut */
typecommit(t);
if(t->what == Body){
seq++;
filemark(t->file);
}
cut(t, t, nil, TRUE, TRUE, nil, 0);
textshow(t, t->q0, t->q0, 1);
t->iq1 = t->q0;
return;
case Kcmd+'v': /* %V: paste */
typecommit(t);
if(t->what == Body){
seq++;
filemark(t->file);
}
paste(t, t, nil, TRUE, FALSE, nil, 0);
textshow(t, t->q0, t->q1, 1);
t->iq1 = t->q1;
return;
}
if(t->q1 > t->q0){
if(t->ncache != 0)
error("text.type");
cut(t, t, nil, TRUE, TRUE, nil, 0);
t->eq0 = ~0;
}
textshow(t, t->q0, t->q0, 1);
switch(r){
case 0x06: /* ^F: complete */
case Kins:
typecommit(t);
rp = textcomplete(t);
if(rp == nil)
return;
nr = runestrlen(rp);
break; /* fall through to normal insertion case */
case 0x1B:
if(t->eq0 != ~0) {
if(t->eq0 <= t->q0)
textsetselect(t, t->eq0, t->q0);
else
textsetselect(t, t->q0, t->eq0);
}
if(t->ncache > 0)
typecommit(t);
t->iq1 = t->q0;
return;
case 0x08: /* ^H: erase character */
case 0x15: /* ^U: erase line */
case 0x17: /* ^W: erase word */
if(t->q0 == 0) /* nothing to erase */
return;
nnb = textbswidth(t, r);
q1 = t->q0;
q0 = q1-nnb;
/* if selection is at beginning of window, avoid deleting invisible text */
if(q0 < t->org){
q0 = t->org;
nnb = q1-q0;
}
if(nnb <= 0)
return;
for(i=0; i<t->file->ntext; i++){
u = t->file->text[i];
u->nofill = TRUE;
nb = nnb;
n = u->ncache;
if(n > 0){
if(q1 != u->cq0+n)
error("text.type backspace");
if(n > nb)
n = nb;
u->ncache -= n;
textdelete(u, q1-n, q1, FALSE);
nb -= n;
}
if(u->eq0==q1 || u->eq0==~0)
u->eq0 = q0;
if(nb && u==t)
textdelete(u, q0, q0+nb, TRUE);
if(u != t)
textsetselect(u, u->q0, u->q1);
else
textsetselect(t, q0, q0);
u->nofill = FALSE;
}
for(i=0; i<t->file->ntext; i++)
textfill(t->file->text[i]);
t->iq1 = t->q0;
return;
case '\n':
if(t->w->autoindent){
/* find beginning of previous line using backspace code */
nnb = textbswidth(t, 0x15); /* ^U case */
rp = runemalloc(nnb + 1);
nr = 0;
rp[nr++] = r;
for(i=0; i<nnb; i++){
r = textreadc(t, t->q0-nnb+i);
if(r != ' ' && r != '\t')
break;
rp[nr++] = r;
}
}
break; /* fall through to normal code */
}
/* otherwise ordinary character; just insert, typically in caches of all texts */
for(i=0; i<t->file->ntext; i++){
u = t->file->text[i];
if(u->eq0 == ~0)
u->eq0 = t->q0;
if(u->ncache == 0)
u->cq0 = t->q0;
else if(t->q0 != u->cq0+u->ncache)
error("text.type cq1");
/*
* Change the tag before we add to ncache,
* so that if the window body is resized the
* commit will not find anything in ncache.
*/
if(u->what==Body && u->ncache == 0){
u->needundo = TRUE;
winsettag(t->w);
u->needundo = FALSE;
}
textinsert(u, t->q0, rp, nr, FALSE);
if(u != t)
textsetselect(u, u->q0, u->q1);
if(u->ncache+nr > u->ncachealloc){
u->ncachealloc += 10 + nr;
u->cache = runerealloc(u->cache, u->ncachealloc);
}
runemove(u->cache+u->ncache, rp, nr);
u->ncache += nr;
}
if(rp != &r)
free(rp);
textsetselect(t, t->q0+nr, t->q0+nr);
if(r=='\n' && t->w!=nil)
wincommit(t->w, t);
t->iq1 = t->q0;
}
