From 2656f543f488401e2ee500b1b4cb17afb472457f Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Sun, 13 Oct 2019 17:31:53 +0200
Subject: [PATCH] undo: don't try to copy a string that doesn't exist

This fixes https://savannah.gnu.org/bugs/?57051.

Bug existed since commit d256d0cb from earlier today.
---
 src/text.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/text.c b/src/text.c
index daf94c40..69ddfc0a 100644
--- a/src/text.c
+++ b/src/text.c
@@ -1226,6 +1226,7 @@ void add_undo(undo_type action, const char *message)
 		u->lineno += cutbottom->lineno - cutbuffer->lineno;
 		break;
 	case INSERT:
+		break;
 	case COUPLE_BEGIN:
 		u->mark_begin_lineno = openfile->current_y;
 	case COUPLE_END: