commit 5e90ec75ee98d867c7917e4f42a8a66d33f42647
from: Russ Cox <rsc@swtch.com>
date: Sun Jan 02 22:54:48 2011 UTC

libframe: fix line wrap display glitch (Erik Quanstrom)

R=rsc
http://codereview.appspot.com/3777044

commit - 839c052a938f78fde18b9b2431c24c6163e4a7f3
commit + 5e90ec75ee98d867c7917e4f42a8a66d33f42647
blob - 04ef6a09674109915de1a3cc330a83efffd024f7
blob + e333abd8b65daad8054da55b2f6944d7ffa02527
--- src/libframe/frdelete.c
+++ src/libframe/frdelete.c
@@ -9,7 +9,7 @@ frdelete(Frame *f, ulong p0, ulong p1)
 {
 	Point pt0, pt1, ppt0;
 	Frbox *b;
-	int n0, n1, n;
+	int n0, n1, n, w0;
 	ulong cn1;
 	Rectangle r;
 	int nn0;
@@ -52,6 +52,7 @@ frdelete(Frame *f, ulong p0, ulong p1)
 		r.max = pt0;
 		r.max.y += f->font->height;
 		if(b->nrune > 0){
+			w0 = b->wid;
 			if(n != b->nrune){
 				_frsplitbox(f, n1, n);
 				b = &f->box[n1];
@@ -59,6 +60,13 @@ frdelete(Frame *f, ulong p0, ulong p1)
 			r.max.x += b->wid;
 			draw(f->b, r, f->b, nil, pt1);
 			cn1 += b->nrune;
+			
+			/* blank remainder of line */
+			r.min.x = r.max.x;
+			r.max.x += w0 - b->wid;
+			if(r.max.x > f->r.max.x)
+				r.max.x = f->r.max.x;
+			draw(f->b, r, f->cols[BACK], nil, r.min);
 		}else{
 			r.max.x += _frnewwid0(f, pt0, b);
 			if(r.max.x > f->r.max.x)