From 930b2c4a7f222e15e6493d5bbb8fd90e681d2626 Mon Sep 17 00:00:00 2001
From: Roberto E. Vargas Caballero
Date: Mon, 3 Sep 2012 21:52:34 +0200
Subject: Force redisplay of all lines in DECSCNM

When it is called DECSCNM all lines become dirty, because it is necessary
redraw all lines for getting the new colors. It is easy see the problem
running 'echo ^[[?5h'.

In order to get a correct flash when running tput flash is necessary wait
after DECSCNM, until the changes are displayed, because in other case the
switch between reverse on/reverse off will be too much fast and nothing will
happen.
---
 st.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)---
 st.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/st.c b/st.c
index fde0493..193db5e 100644
--- a/st.c
+++ b/st.c
@@ -54,6 +54,7 @@
 
 #define SELECT_TIMEOUT (20*1000) /* 20 ms */
 #define DRAW_TIMEOUT  (20*1000) /* 20 ms */
+#define REDRAW_TIMEOUT (80*1000) /* 80 ms */
 
 #define SERRNO strerror(errno)
 #define MIN(a, b)  ((a) < (b) ? (a) : (b))
@@ -238,6 +239,7 @@ typedef struct {
 
 static void die(const char*, ...);
 static void draw(void);
+static void redraw(void);
 static void drawregion(int, int, int, int);
 static void execsh(void);
 static void sigchld(int);
@@ -1206,7 +1208,7 @@ tsetmode(bool priv, bool set, int *args, int narg) {
 				mode = term.mode;
 				MODBIT(term.mode,set, MODE_REVERSE);
 				if (mode != term.mode)
-					draw();
+					redraw();
 				break;
 			case 7:
 				MODBIT(term.mode, set, MODE_WRAP);
@@ -2029,6 +2031,14 @@ xdrawcursor(void) {
 	xcopy(term.c.x, term.c.y, 1, 1);
 }
 
+void
+redraw(void) {
+	struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
+	tfulldirt();
+	draw();
+	nanosleep(&tv, NULL);
+}
+
 void
 draw() {
 	drawregion(0, 0, term.col, term.row);
-- 
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