Merge branch 'wt/rename' into api-hardening

# Conflicts:
#	README.md

1 files changed, 26 insertions, 0 deletions

diff --git a/include/wsap_vtcore/unicode/grapheme.h b/include/wsap_vtcore/unicode/grapheme.h
new file mode 100644
index 0000000..6146239
--- /dev/null
+++ b/include/wsap_vtcore/unicode/grapheme.h
@@ -0,0 +1,26 @@
+#ifndef WSAP_VTCORE_UNICODE_GRAPHEME_H
+#define WSAP_VTCORE_UNICODE_GRAPHEME_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define WSAP_VTCORE_GRAPHEME_MAX_LEN 20
+#define WSAP_VTCORE_GRAPHEME_HANDLE_BASE 0x7F000000u
+
+static inline bool wsap_vtcore_grapheme_is_handle(uint32_t c)
+{
+    return c >= WSAP_VTCORE_GRAPHEME_HANDLE_BASE;
+}
+
+static inline bool wsap_vtcore_grapheme_regional_indicator(uint32_t cp)
+{
+    return cp >= 0x1F1E6 && cp <= 0x1F1FF;
+}
+
+static inline bool wsap_vtcore_grapheme_emoji_modifier(uint32_t cp)
+{
+    return cp >= 0x1F3FB && cp <= 0x1F3FF;
+}
+
+#endif