From 44f046af0c6f1d79ef6f189d69ac670bbfba4ac4 Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Mon, 5 Jul 2021 17:22:24 +0200
Subject: [PATCH] stb_textedit: Fix paste failure handling breaking undo stack

Could lead to freezes.

Fixes issue #734.
---
 stb_textedit.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/stb_textedit.h b/stb_textedit.h
index 90543b0..5bb3a57 100644
--- a/stb_textedit.h
+++ b/stb_textedit.h
@@ -712,9 +712,7 @@ static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditSta
       state->has_preferred_x = 0;
       return 1;
    }
-   // remove the undo since we didn't actually insert the characters
-   if (state->undostate.undo_point)
-      --state->undostate.undo_point;
+   // note: paste failure will leave deleted selection, may be restored with an undo (see https://github.com/nothings/stb/issues/734 for details)
    return 0;
 }