From 7475165cd87d443da34da11298e638d3d17f43e9 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 8 Feb 2017 15:49:29 +0000
Subject: Some other tidying bits.

---
 tty.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'tty.c')

diff --git a/tty.c b/tty.c
index 1b1ae480..02143f97 100644
--- a/tty.c
+++ b/tty.c
@@ -1156,8 +1156,6 @@ tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
 void
 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
 {
-	struct window_pane	*wp = ctx->wp;
-
 	if (ctx->xoff + ctx->ocx > tty->sx - 1 && ctx->ocy == ctx->orlower) {
 		if (tty_pane_full_width(tty, ctx))
 			tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
@@ -1167,7 +1165,7 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
 
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
-	tty_cell(tty, ctx->cell, wp);
+	tty_cell(tty, ctx->cell, ctx->wp);
 }
 
 void
-- 
cgit 


From d4b006b9faf001de41560db2e8fb890c654598e2 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 8 Feb 2017 16:18:20 +0000
Subject: Fix clear start of line.

---
 tty.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'tty.c')

diff --git a/tty.c b/tty.c
index 02143f97..1b7fb55f 100644
--- a/tty.c
+++ b/tty.c
@@ -954,14 +954,15 @@ tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
 
 	tty_default_attributes(tty, wp, ctx->bg);
 
-	tty_cursor_pane(tty, ctx, 0, ctx->ocy);
-
 	if (ctx->xoff == 0 &&
 	    tty_term_has(tty->term, TTYC_EL1) &&
-	    !tty_fake_bce(tty, ctx->wp, ctx->bg))
+	    !tty_fake_bce(tty, ctx->wp, ctx->bg)) {
+		tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 		tty_putcode(tty, TTYC_EL1);
-	else
+	} else {
+		tty_cursor_pane(tty, ctx, 0, ctx->ocy);
 		tty_repeat_space(tty, ctx->ocx + 1);
+	}
 }
 
 void
-- 
cgit 


From 13a0b6bb3fe05454cace81f5ec7624f6fd9021a5 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 8 Feb 2017 16:45:18 +0000
Subject: Collect sequences of printable ASCII characters and process them
 together instead of handling them one by one. This is significantly faster.
 Sequences are terminated when we reach the end of the line, fill the internal
 buffer, or a different character is seen by the input parser (an escape
 sequence, or UTF-8).

Rather than writing collected sequences out immediately, hold them until
it is necessary (another screen modification, or we consume all
available data). This means we can discard changes that would have no
effect (for example, lines that would just be scrolled off the screen or
cleared). This reduces the total amount of data we write out to the
terminal - not important for fast terminals, but a big help with slow
(like xterm).
---
 tty.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'tty.c')

diff --git a/tty.c b/tty.c
index 1b7fb55f..508e4bac 100644
--- a/tty.c
+++ b/tty.c
@@ -1169,6 +1169,15 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
 	tty_cell(tty, ctx->cell, ctx->wp);
 }
 
+void
+tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
+{
+	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
+
+	tty_attributes(tty, ctx->cell, ctx->wp);
+	tty_putn(tty, ctx->ptr, ctx->num, ctx->num);
+}
+
 void
 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
 {
-- 
cgit 


From e100d465daefd20da0bb5eea87c4b4896badff16 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 8 Feb 2017 17:31:09 +0000
Subject: Add support for scroll up escape sequence (CSI S) and use it when
 possible instead of sending individual line feeds.

---
 tty.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'tty.c')

diff --git a/tty.c b/tty.c
index 508e4bac..40bd7a40 100644
--- a/tty.c
+++ b/tty.c
@@ -1021,6 +1021,32 @@ tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
 	tty_putc(tty, '\n');
 }
 
+void
+tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
+{
+	struct window_pane	*wp = ctx->wp;
+	u_int			 i;
+
+	if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
+	    tty_fake_bce(tty, wp, ctx->bg) ||
+	    !tty_term_has(tty->term, TTYC_CSR)) {
+		tty_redraw_region(tty, ctx);
+		return;
+	}
+
+	tty_attributes(tty, &grid_default_cell, wp);
+
+	tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
+	tty_margin_pane(tty, ctx);
+
+	if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
+		tty_cursor(tty, tty->rright, ctx->yoff + tty->rlower);
+		for (i = 0; i < ctx->num; i++)
+			tty_putc(tty, '\n');
+	} else
+		tty_putcode1(tty, TTYC_INDN, ctx->num);
+}
+
 void
 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
 {
-- 
cgit