From b9adc30b86ef550655de1e8a8122dae20a6b13df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Thu, 14 Jan 2021 10:24:36 +0100
Subject: RichString: implement safe rewind

The current rewind logic causes issues when rewinding over the short
string optimization boundary.
---
 RichString.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'RichString.c')

diff --git a/RichString.c b/RichString.c
index 5a2c2e14..c4ecc258 100644
--- a/RichString.c
+++ b/RichString.c
@@ -46,6 +46,10 @@ static void RichString_setLen(RichString* this, int len) {
    }
 }
 
+void RichString_rewind(RichString* this, int count) {
+   RichString_setLen(this, this->chlen - count);
+}
+
 #ifdef HAVE_LIBNCURSESW
 
 static inline int RichString_writeFromWide(RichString* this, int attrs, const char* data_c, int from, int len) {
-- 
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