From e82e709bcc525e4d9a6e6b5cf75f61e7ab20c2e5 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Wed, 26 Apr 2023 08:25:32 +0200
Subject: [PATCH] Multiline Fl_Input: fix move up/down in non ASCII text

---
 src/Fl_Input_.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Fl_Input_.cxx b/src/Fl_Input_.cxx
index eb8f38bfb..e7cb7bbfb 100644
--- a/src/Fl_Input_.cxx
+++ b/src/Fl_Input_.cxx
@@ -221,10 +221,10 @@ double Fl_Input_::expandpos(
          chr += 7-(chr%8);
       } else n += 2;
     } else {
-      n++;
+      n += fl_utf8len1(*p);
     }
     chr += fl_utf8len((char)p[0]) >= 1;
-    p++;
+    p += fl_utf8len1(*p);
   }
   if (returnn) *returnn = n;
   return fl_width(buf, n);