tweak selection criteria

grow selection from point of click, not start of selection region.
starting at the beginning of the selection region causes the match
logic to kick in, which is confusing.

1 files changed, 6 insertions, 4 deletions

diff --git a/sys/src/cmd/rio/wind.c b/sys/src/cmd/rio/wind.c
index 2a5e065bf..a9cfd248e 100644
--- a/sys/src/cmd/rio/wind.c
+++ b/sys/src/cmd/rio/wind.c
@@ -1024,7 +1024,7 @@ wselect(Window *w)
 		clickcount = 0;
 	if(clickwin == w && clickcount >= 1 && w->mc.msec-clickmsec < 500){
 		mode = (clickcount > 2) ? 2 : clickcount;
-		wstretchsel(w, &q0, &q1, mode);
+		wstretchsel(w, selectq, &q0, &q1, mode);
 		wsetselect(w, q0, q1);
 		x = w->mc.xy.x;
 		y = w->mc.xy.y;
@@ -1042,7 +1042,7 @@ wselect(Window *w)
 		w->mc.xy.y = y;
 		q0 = w->q0;	/* may have changed */
 		q1 = w->q1;
-		selectq = q0;
+		selectq = w->org+frcharofpt(w, w->mc.xy);
 	}
 	if(w->mc.buttons == b && clickcount == 0){
 		w->scroll = framescroll;
@@ -1063,7 +1063,7 @@ wselect(Window *w)
 	if(q0 == q1){
 		mode = (clickcount > 2) ? 2 : clickcount;
 		if(q0==w->q0 && clickwin==w && w->mc.msec-clickmsec<500)
-			wstretchsel(w, &q0, &q1, mode);
+			wstretchsel(w, selectq, &q0, &q1, mode);
 		else
 			clickwin = w;
 		clickmsec = w->mc.msec;
@@ -1499,12 +1499,14 @@ inmode(Rune r, int mode)
 }
 
 void
-wstretchsel(Window *w, uint *q0, uint *q1, int mode)
+wstretchsel(Window *w, uint pt, uint *q0, uint *q1, int mode)
 {
 	int c, i;
 	Rune *r, *l, *p;
 	uint q;
 
+	*q0 = pt;
+	*q1 = pt;
 	for(i=0; left[i]!=nil; i++){
 		q = *q0;
 		l = left[i];