Handle num lock in chat (#12984)

[minetest.git] / src / util / string.h

diff --git a/src/util/string.h b/src/util/string.h
index 4c7a4068d54b583a6b2f1fa8d9adb9578cb2d057..2f3c2615b68f7a0419d3e404c69d4de0c18a494d 100644 (file)
--- a/src/util/string.h
+++ b/src/util/string.h
@@ -41,6 +41,15 @@ class Translations;
        (((unsigned int)(x) >= 0x20) &&  \
        ( (unsigned int)(x) <= 0x7e))
 
+// Checks whether a value is in a Unicode private use area
+#define IS_PRIVATE_USE_CHAR(x)    \
+       (((wchar_t)(x) >= 0xE000 &&   \
+         (wchar_t)(x) <= 0xF8FF) ||  \
+        ((wchar_t)(x) >= 0xF0000 &&  \
+         (wchar_t)(x) <= 0xFFFFD) || \
+        ((wchar_t)(x) >= 0x100000 && \
+         (wchar_t)(x) <= 0x10FFFD))  \
+
 // Checks whether a byte is an inner byte for an utf-8 multibyte sequence
 #define IS_UTF8_MULTB_INNER(x)       \
        (((unsigned char)(x) >= 0x80) && \