Support Americanist Phonetic Notation
OpenType language system tag: `APPH`
https://www.microsoft.com/typography/otspec/languagetags.htm
IETF BCP47 variant tag: `fonnapa`
http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
diff --git a/src/hb-ot-tag.cc b/src/hb-ot-tag.cc
index 34d7b37..5f21ac0 100644
--- a/src/hb-ot-tag.cc
+++ b/src/hb-ot-tag.cc
@@ -892,13 +892,21 @@
}
/*
- * The International Phonetic Alphabet is a variant tag in BCP-47,
- * which can be applied to any language.
+ * "fonipa" is a variant tag in BCP-47, meaning the International Phonetic Alphabet.
+ * It can be applied to any language.
*/
if (strstr (lang_str, "-fonipa")) {
return HB_TAG('I','P','P','H'); /* Phonetic transcription—IPA conventions */
}
+ /*
+ * "fonnapa" is a variant tag in BCP-47, meaning the North American Phonetic Alphabet
+ * also known as Americanist Phonetic Notation. It can be applied to any language.
+ */
+ if (strstr (lang_str, "-fonnapa")) {
+ return HB_TAG('A','P','P','H'); /* Phonetic transcription—Americanist conventions */
+ }
+
/* Find a language matching in the first component */
{
const LangTag *lang_tag;
@@ -970,6 +978,8 @@
/* struct LangTag has only room for 3-letter language tags. */
switch (tag) {
+ case HB_TAG('A','P','P','H'): /* Phonetic transcription—Americanist conventions */
+ return hb_language_from_string ("und-fonnapa", -1);
case HB_TAG('I','P','P','H'): /* Phonetic transcription—IPA conventions */
return hb_language_from_string ("und-fonipa", -1);
}
