From 9b076198627c9abbe91ca28724f457ac18caf8e5 Mon Sep 17 00:00:00 2001
From: "C. McEnroe" <june@causal.agency>
Date: Mon, 2 Dec 2019 01:43:55 -0500
Subject: Fix \? prompt expansion for more than one digit

---
 bin/1sh/parser.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'bin/1sh')

diff --git a/bin/1sh/parser.c b/bin/1sh/parser.c
index 39b36e67..a7b86aab 100644
--- a/bin/1sh/parser.c
+++ b/bin/1sh/parser.c
@@ -2042,10 +2042,12 @@ expandprompt(const char *fmt) {
 				 * Exit status if non-zero.
 				 */
 			case '?':
-				if (exitstatus != 0)
+				if (exitstatus != 0) {
 					snprintf(&ps[i], PROMPTLEN - i, "%d", exitstatus);
-				else
-					i--;
+					while (ps[i] != '\0')
+						i++;
+				}
+				i--;
 				break;
 
 				/*
-- 
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