From 524988feaa43a6bb8e1fdb2895692a87e843e7a4 Mon Sep 17 00:00:00 2001
From: ac-stef <ac_stef@users.sf.net>
Date: Sun, 25 Jun 2017 18:17:46 +0200
Subject: [PATCH] filter unrenderable chars from console input

filter all chars that have no entry in the current font
---
 source/src/console.h      |  4 +++-
 source/src/protos.h       |  1 +
 source/src/rendertext.cpp | 13 +++++++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/source/src/console.h b/source/src/console.h
index eda109ad..7a7fb101 100644
--- a/source/src/console.h
+++ b/source/src/console.h
@@ -96,7 +96,9 @@ struct textinputbuffer
 
             default:
             {
-                if(unicode)
+                extern bool filterunrenderables(char *s);
+                char tmp[2] = { (char)unicode, 0 };
+                if(unicode && !filterunrenderables(tmp))
                 {
                     size_t len = strlen(buf);
                     if(max && (int)len>=max) break;
diff --git a/source/src/protos.h b/source/src/protos.h
index 04730379..f5336758 100644
--- a/source/src/protos.h
+++ b/source/src/protos.h
@@ -724,6 +724,7 @@ extern void text_pos(const char *str, int cursor, int &cx, int &cy, int maxwidth
 extern void text_startcolumns();
 extern void text_endcolumns();
 extern void cutcolorstring(char *text, int len);
+extern bool filterunrenderables(char *s);
 
 // editing
 #define EDITSEL(x)   if(noteditmode(x) || noselection()) return
diff --git a/source/src/rendertext.cpp b/source/src/rendertext.cpp
index a672e69a..d131d7ea 100644
--- a/source/src/rendertext.cpp
+++ b/source/src/rendertext.cpp
@@ -445,6 +445,19 @@ void cutcolorstring(char *text, int maxlen)
     }
 }
 
+bool filterunrenderables(char *s)
+{
+    bool res = false;
+    char *d = s;
+    while(*s)
+    {
+        if(!curfont->chars.inrange(*s - curfont->skip) && *s != ' ') res = true;
+        else *d++ = *s;
+        s++;
+    }
+    return res;
+}
+
 // animated inlined graphics
 
 VAR(igraphdefaultframetime, 5, 200, 2000);