From 3b9e778dacd3392fdf2e8fc29e726b401b50abfe Mon Sep 17 00:00:00 2001
From: "C. McEnroe" <june@causal.agency>
Date: Mon, 15 Feb 2021 18:53:06 -0500
Subject: Don't insert wchar_t if it can't be converted to mbs

Otherwise it could hit the assertion in editBuffer while converting
to mbs for consumption by the rest of the program.

It's possibly to trigger this with LC_ALL=C and typing C-z C-v M-a,
for example.
---
 edit.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/edit.c b/edit.c
index fc23c58..3e7e1af 100644
--- a/edit.c
+++ b/edit.c
@@ -260,6 +260,8 @@ void edit(uint id, enum Edit op, wchar_t ch) {
 		}
 
 		break; case EditInsert: {
+			char mb[MB_LEN_MAX];
+			if (wctomb(mb, ch) < 0) return;
 			if (reserve(pos, 1)) {
 				buf[pos++] = ch;
 			}
-- 
cgit 1.4.1