From dae2868d1227b95fd076fb4a5efa6256c7245943 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Thu, 27 Jun 2019 15:17:41 +0000
Subject: Add support for underscore colours with Setulc capability, mostly
 from Kai Moschcau.

---
 grid.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'grid.c')

diff --git a/grid.c b/grid.c
index d185f364..cddb5871 100644
--- a/grid.c
+++ b/grid.c
@@ -37,12 +37,12 @@
 
 /* Default grid cell data. */
 const struct grid_cell grid_default_cell = {
-	0, 0, 8, 8, { { ' ' }, 0, 1, 1 }
+	0, 0, 8, 8, 0, { { ' ' }, 0, 1, 1 }
 };
 
 /* Cleared grid cell data. */
 const struct grid_cell grid_cleared_cell = {
-	GRID_FLAG_CLEARED, 0, 8, 8, { { ' ' }, 0, 1, 1 }
+	GRID_FLAG_CLEARED, 0, 8, 8, 0, { { ' ' }, 0, 1, 1 }
 };
 static const struct grid_cell_entry grid_cleared_entry = {
 	GRID_FLAG_CLEARED, { .data = { 0, 8, 8, ' ' } }
@@ -82,6 +82,8 @@ grid_need_extended_cell(const struct grid_cell_entry *gce,
 		return (1);
 	if ((gc->fg & COLOUR_FLAG_RGB) || (gc->bg & COLOUR_FLAG_RGB))
 		return (1);
+	if (gc->us != 0) /* only supports 256 or RGB */
+		return (1);
 	return (0);
 }
 
-- 
cgit 


From 3635b3cd6c3343b2ec3f7173facef8a284e7e613 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Sat, 6 Jul 2019 20:37:29 +0000
Subject: Correctly clear underscore colour in grid_get_cell1, also fix struct
 grid_cell to avoid padding. Fixes increased memory use reported by Suraj N
 Kurapati.

---
 grid.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'grid.c')

diff --git a/grid.c b/grid.c
index cddb5871..cbff99e2 100644
--- a/grid.c
+++ b/grid.c
@@ -37,12 +37,12 @@
 
 /* Default grid cell data. */
 const struct grid_cell grid_default_cell = {
-	0, 0, 8, 8, 0, { { ' ' }, 0, 1, 1 }
+	{ { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0
 };
 
 /* Cleared grid cell data. */
 const struct grid_cell grid_cleared_cell = {
-	GRID_FLAG_CLEARED, 0, 8, 8, 0, { { ' ' }, 0, 1, 1 }
+	{ { ' ' }, 0, 1, 1 }, 0, GRID_FLAG_CLEARED, 8, 8, 0
 };
 static const struct grid_cell_entry grid_cleared_entry = {
 	GRID_FLAG_CLEARED, { .data = { 0, 8, 8, ' ' } }
@@ -475,6 +475,7 @@ grid_get_cell1(struct grid_line *gl, u_int px, struct grid_cell *gc)
 	gc->bg = gce->data.bg;
 	if (gce->flags & GRID_FLAG_BG256)
 		gc->bg |= COLOUR_FLAG_256;
+	gc->us = 0;
 	utf8_set(&gc->data, gce->data.data);
 }
 
-- 
cgit 


From b89f2f28bb5f21bfe836870d907ec6992acb5f28 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 16 Jul 2019 10:30:56 +0000
Subject: Fix grid clear code to correctly clear with the default background
 colour rather than ending up with the used count higher than the total size,
 GitHub issue 1829.

---
 grid.c | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

(limited to 'grid.c')

diff --git a/grid.c b/grid.c
index cbff99e2..f33eef72 100644
--- a/grid.c
+++ b/grid.c
@@ -547,7 +547,7 @@ void
 grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
 {
 	struct grid_line	*gl;
-	u_int			 xx, yy;
+	u_int			 xx, yy, ox, sx;
 
 	if (nx == 0 || ny == 0)
 		return;
@@ -564,16 +564,20 @@ grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
 
 	for (yy = py; yy < py + ny; yy++) {
 		gl = &gd->linedata[yy];
-		if (px + nx >= gd->sx && px < gl->cellused)
-			gl->cellused = px;
-		if (px > gl->cellsize && COLOUR_DEFAULT(bg))
-			continue;
-		if (px + nx >= gl->cellsize && COLOUR_DEFAULT(bg)) {
-			gl->cellsize = px;
-			continue;
+
+		sx = gd->sx;
+		if (sx > gl->cellsize)
+			sx = gl->cellsize;
+		ox = nx;
+		if (COLOUR_DEFAULT(bg)) {
+			if (px > sx)
+				continue;
+			if (px + nx > sx)
+				ox = sx - px;
 		}
-		grid_expand_line(gd, yy, px + nx, 8); /* default bg first */
-		for (xx = px; xx < px + nx; xx++)
+
+		grid_expand_line(gd, yy, px + ox, 8); /* default bg first */
+		for (xx = px; xx < px + ox; xx++)
 			grid_clear_cell(gd, xx, yy, bg);
 	}
 }
@@ -1216,6 +1220,10 @@ grid_reflow(struct grid *gd, u_int sx)
 	struct grid_cell	 gc;
 	u_int			 yy, width, i, at, first;
 
+	/* Do not reflow to the same size. */
+	if (sx == gd->sx)
+		return;
+
 	/*
 	 * Create a destination grid. This is just used as a container for the
 	 * line data and may not be fully valid.
-- 
cgit