moving around the cursor

1 files changed, 7 insertions, 0 deletions

diff --git a/unicode.h b/unicode.h
index 387c08d..3f76090 100644
--- a/unicode.h
+++ b/unicode.h
@@ -2,4 +2,11 @@
 #define UNICODE_H_
 #define UNICODE_BOX_CHARACTER 0x2610
 #define UNICODE_CODE_POINTS 0x110000 // number of Unicode code points
+
+static bool unicode_is_start_of_code_point(u8 byte) {
+	// see https://en.wikipedia.org/wiki/UTF-8#Encoding
+	// continuation bytes are of the form 10xxxxxx
+	return (byte & 0xC0) != 0x80;
+}
+
 #endif