From ebbac77d7416d365a2a33f159780ef0f06cc3351 Mon Sep 17 00:00:00 2001
From: "Roberto E. Vargas Caballero" <k0ga@shike2.com>
Date: Sun, 23 Jun 2013 12:09:19 +0200
Subject: [PATCH] Fix selection clearing

The way st knows if there is a selection activated is checking if sel.ob.x
is equal to -1. In some parts of the code the way of disabling the selection
was only setting it to -1, but after it you can't be sure if the selection
is clearing from the terminal representation, because it is necessary mark
all the lines affected by the selection as dirty. Already there is a functon
which perform this task, selclear.
---
 st.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/st.c b/st.c
index 2811876..96111a0 100644
--- a/st.c
+++ b/st.c
@@ -888,11 +888,7 @@ bpress(XEvent *e) {
 		gettimeofday(&now, NULL);
 
 		/* Clear previous selection, logically and visually. */
-		if(sel.ob.x != -1) {
-			sel.ob.x = -1;
-			tsetdirt(sel.nb.y, sel.ne.y);
-			draw();
-		}
+		selclear(NULL);
 		sel.mode = 1;
 		sel.type = SEL_REGULAR;
 		sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
@@ -1108,7 +1104,7 @@ brelease(XEvent *e) {
 		selpaste(NULL);
 	} else if(e->xbutton.button == Button1) {
 		if(sel.mode < 2) {
-			sel.ob.x = -1;
+			selclear(NULL);
 		} else {
 			getbuttoninfo(e);
 			selcopy();
@@ -1441,7 +1437,7 @@ selscroll(int orig, int n) {
 
 	if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
 		if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
-			sel.ob.x = -1;
+			selclear(NULL);
 			return;
 		}
 		if(sel.type == SEL_RECTANGULAR) {
@@ -1951,7 +1947,7 @@ csihandle(void) {
 			tputtab(1);
 		break;
 	case 'J': /* ED -- Clear screen */
-		sel.ob.x = -1;
+		selclear(NULL);
 		switch(csiescseq.arg[0]) {
 		case 0: /* below */
 			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
@@ -2448,7 +2444,7 @@ tputc(char *c, int len) {
 	if(control && !(term.c.attr.mode & ATTR_GFX))
 		return;
 	if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
-		sel.ob.x = -1;
+		selclear(NULL);
 	if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
 		term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
 		tnewline(1);