===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/cmd-split-window.c,v
retrieving revision 1.95
retrieving revision 1.96
diff -u -r1.95 -r1.96
--- src/usr.bin/tmux/cmd-split-window.c	2019/05/03 20:44:24	1.95
+++ src/usr.bin/tmux/cmd-split-window.c	2019/10/15 08:25:37	1.96
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-split-window.c,v 1.95 2019/05/03 20:44:24 nicm Exp $ */
+/* $OpenBSD: cmd-split-window.c,v 1.96 2019/10/15 08:25:37 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -42,8 +42,7 @@
 
 	.args = { "bc:de:fF:hIl:p:Pt:v", 0, -1 },
 	.usage = "[-bdefhIPv] [-c start-directory] [-e environment] "
-		 "[-F format] [-p percentage|-l size] " CMD_TARGET_PANE_USAGE
-		 " [command]",
+		 "[-F format] [-l size] " CMD_TARGET_PANE_USAGE " [command]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
@@ -65,20 +64,37 @@
 	struct layout_cell	*lc;
 	struct cmd_find_state	 fs;
 	int			 size, percentage, flags, input;
-	const char		*template, *add;
-	char			*cause, *cp;
+	const char		*template, *add, *errstr, *p;
+	char			*cause, *cp, *copy;
+	size_t			 plen;
 	struct args_value	*value;
 
 	if (args_has(args, 'h'))
 		type = LAYOUT_LEFTRIGHT;
 	else
 		type = LAYOUT_TOPBOTTOM;
-	if (args_has(args, 'l')) {
-		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
-		if (cause != NULL) {
-			cmdq_error(item, "create pane failed: -l %s", cause);
-			free(cause);
-			return (CMD_RETURN_ERROR);
+	if ((p = args_get(args, 'l')) != NULL) {
+		plen = strlen(p);
+		if (p[plen - 1] == '%') {
+			copy = xstrdup(p);
+			copy[plen - 1] = '\0';
+			percentage = strtonum(copy, 0, INT_MAX, &errstr);
+			free(copy);
+			if (errstr != NULL) {
+				cmdq_error(item, "percentage %s", errstr);
+				return (CMD_RETURN_ERROR);
+			}
+			if (type == LAYOUT_TOPBOTTOM)
+				size = (wp->sy * percentage) / 100;
+			else
+				size = (wp->sx * percentage) / 100;
+		} else {
+			size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
+			if (cause != NULL) {
+				cmdq_error(item, "lines %s", cause);
+				free(cause);
+				return (CMD_RETURN_ERROR);
+			}
 		}
 	} else if (args_has(args, 'p')) {
 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);