tests and a correction for grapheme cluster boundary detection

[disorder] / lib / unicode.c

diff --git a/lib/unicode.c b/lib/unicode.c
index bac9e83c2e3bd9af467b494b6d6a2f2f0408111d..0a17b37a58167df0e9b9a9274460437970f3bfc5 100644 (file)
--- a/lib/unicode.c
+++ b/lib/unicode.c
@@ -670,7 +670,10 @@ int utf32_is_gcb(const uint32_t *s, size_t ns, size_t n) {
   hafter = utf32__hangul_syllable_type(after);
   /* GB6 */
   if(hbefore == Hangul_Syllable_Type_L
-     && hafter != Hangul_Syllable_Type_NA)
+     && (hafter == Hangul_Syllable_Type_L
+         || hafter == Hangul_Syllable_Type_V
+         || hafter == Hangul_Syllable_Type_LV
+         || hafter == Hangul_Syllable_Type_LVT))
     return 0;
   /* GB7 */
   if((hbefore == Hangul_Syllable_Type_LV