From e149d29803781436ff6496e151ceeb0779891e76 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 17 Dec 2024 08:40:24 +0000
Subject: [PATCH] Assign excess space more evenly when spreading out cells,
 from Torbjorn Lonnemark.

---
 layout.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/layout.c b/layout.c
index 7a63d36f..2832039c 100644
--- a/layout.c
+++ b/layout.c
@@ -1101,7 +1101,7 @@ layout_spread_cell(struct window *w, struct layout_cell *parent)
 {
 	struct layout_cell	*lc;
 	struct style		*sb_style = &w->active->scrollbar_style;
-	u_int			 number, each, size, this;
+	u_int			 number, each, size, this, remainder;
 	int			 change, changed, status, scrollbars;
 
 	number = 0;
@@ -1130,20 +1130,31 @@ layout_spread_cell(struct window *w, struct layout_cell *parent)
 	each = (size - (number - 1)) / number;
 	if (each == 0)
 		return (0);
+	/*
+	 * Remaining space after assigning that which can be evenly
+	 * distributed.
+	 */
+	remainder = size - (number * (each + 1)) + 1;
 
 	changed = 0;
 	TAILQ_FOREACH (lc, &parent->cells, entry) {
-		if (TAILQ_NEXT(lc, entry) == NULL)
-			each = size - ((each + 1) * (number - 1));
 		change = 0;
 		if (parent->type == LAYOUT_LEFTRIGHT) {
 			change = each - (int)lc->sx;
+			if (remainder > 0) {
+				change++;
+				remainder--;
+			}
 			layout_resize_adjust(w, lc, LAYOUT_LEFTRIGHT, change);
 		} else if (parent->type == LAYOUT_TOPBOTTOM) {
 			if (layout_add_horizontal_border(w, lc, status))
 				this = each + 1;
 			else
 				this = each;
+			if (remainder > 0) {
+				this++;
+				remainder--;
+			}
 			change = this - (int)lc->sy;
 			layout_resize_adjust(w, lc, LAYOUT_TOPBOTTOM, change);
 		}