From e6cddcf752b335cb945bba4619b500b527cfee0a Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 31 Mar 2020 17:13:20 +0000
Subject: Add a -T flag to resize-pane to trim lines below the cursor, moving
 lines out of the history. GitHub issue 2134.

---
 cmd-resize-pane.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'cmd-resize-pane.c')

diff --git a/cmd-resize-pane.c b/cmd-resize-pane.c
index b0aa2756..fd303cc1 100644
--- a/cmd-resize-pane.c
+++ b/cmd-resize-pane.c
@@ -36,8 +36,8 @@ const struct cmd_entry cmd_resize_pane_entry = {
 	.name = "resize-pane",
 	.alias = "resizep",
 
-	.args = { "DLMRt:Ux:y:Z", 0, 1 },
-	.usage = "[-DLMRUZ] [-x width] [-y height] " CMD_TARGET_PANE_USAGE " "
+	.args = { "DLMRTt:Ux:y:Z", 0, 1 },
+	.usage = "[-DLMRTUZ] [-x width] [-y height] " CMD_TARGET_PANE_USAGE " "
 		 "[adjustment]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -60,6 +60,19 @@ cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)
 	char			*cause;
 	u_int			 adjust;
 	int			 x, y;
+	struct grid		*gd = wp->base.grid;
+
+	if (args_has(args, 'T')) {
+		if (!TAILQ_EMPTY(&wp->modes))
+			return (CMD_RETURN_NORMAL);
+		adjust = screen_size_y(&wp->base) - 1 - wp->base.cy;
+		if (adjust > gd->hsize)
+			adjust = gd->hsize;
+		grid_remove_history(gd, adjust);
+		wp->base.cy += adjust;
+		wp->flags |= PANE_REDRAW;
+		return (CMD_RETURN_NORMAL);
+	}
 
 	if (args_has(args, 'M')) {
 		if (cmd_mouse_window(&shared->mouse, &s) == NULL)
-- 
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