From 7d59f82cf96a91ac560d06aef0fe5c8880cf2244 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 25 Sep 2018 14:27:20 +0000
Subject: Allow panes to be 1 line or column by redrawing instead of using the
 scroll region, from Soeren Tempel in GitHub issue 1487.

---
 tty.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

(limited to 'tty.c')

diff --git a/tty.c b/tty.c
index b6dd3403..5bf4a3ca 100644
--- a/tty.c
+++ b/tty.c
@@ -1145,7 +1145,9 @@ tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
 	if (!tty_pane_full_width(tty, ctx) ||
 	    tty_fake_bce(tty, ctx->wp, ctx->bg) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
-	    !tty_term_has(tty->term, TTYC_IL1)) {
+	    !tty_term_has(tty->term, TTYC_IL1) ||
+	    ctx->wp->sx == 1 ||
+	    ctx->wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1166,7 +1168,9 @@ tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
 	if (!tty_pane_full_width(tty, ctx) ||
 	    tty_fake_bce(tty, ctx->wp, ctx->bg) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
-	    !tty_term_has(tty->term, TTYC_DL1)) {
+	    !tty_term_has(tty->term, TTYC_DL1) ||
+	    ctx->wp->sx == 1 ||
+	    ctx->wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1227,7 +1231,9 @@ tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
 	if (!tty_pane_full_width(tty, ctx) ||
 	    tty_fake_bce(tty, wp, 8) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
-	    !tty_term_has(tty->term, TTYC_RI)) {
+	    !tty_term_has(tty->term, TTYC_RI) ||
+	    ctx->wp->sx == 1 ||
+	    ctx->wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1251,7 +1257,9 @@ tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
 
 	if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
 	    tty_fake_bce(tty, wp, 8) ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) ||
+	    wp->sx == 1 ||
+	    wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1287,7 +1295,9 @@ tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
 
 	if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
 	    tty_fake_bce(tty, wp, 8) ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) ||
+	    wp->sx == 1 ||
+	    wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
-- 
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