From 9f0f07885d7f14a37858ff0a5c166d1f067da183 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sun, 13 Apr 2025 00:43:42 +0300
Subject: [PATCH] Show unknown characters as '?' in freetype fonts

---
 libs/fonts/source/freetype.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/fonts/source/freetype.cpp b/libs/fonts/source/freetype.cpp
index f27dead1..373636fe 100644
--- a/libs/fonts/source/freetype.cpp
+++ b/libs/fonts/source/freetype.cpp
@@ -185,6 +185,9 @@ namespace psemek::fonts
 					else
 					{
 						glyph_id = FT_Get_Char_Index(face, ch);
+						if (glyph_id == 0)
+							glyph_id = FT_Get_Char_Index(face, '?');
+
 						glyph_mapping_[ch] = glyph_id;
 					}