phoneme_add_feature: support setting the place of articulation.

src/libespeak-ng/compiledata.c

 	tPHONEME_TYPE = 1,
 	tPHONEME_FLAG,
 	tTRANSITION,
-	tPLACE,
 	tSTATEMENT,
 	tINSTRN1,
 	tWHICH_PHONEME,
 	{ "vcd", tPHONEME_FLAG, phVOICED },
 	{ "vls", tPHONEME_FLAG, phFORTIS },
 
-	// place of articulation, set bits 16-19 of phflags
-	{ "blb", tPLACE,  1 },
-	{ "lbd", tPLACE,  2 },
-	{ "dnt", tPLACE,  3 },
-	{ "alv", tPLACE,  4 },
-	{ "rfx", tPLACE,  5 },
-	{ "pla", tPLACE,  6 },
-	{ "pal", tPLACE,  7 },
-	{ "vel", tPLACE,  8 },
-	{ "lbv", tPLACE,  9 },
-	{ "uvl", tPLACE, 10 },
-	{ "phr", tPLACE, 11 },
-	{ "glt", tPLACE, 12 },
-
 	// vowel transition attributes
 	{ "len=",   tTRANSITION,  1 },
 	{ "rms=",   tTRANSITION,  2 },
 	if_stack[0].returned = 0;
 	after_if = 0;
 	int phoneme_flags = 0;
-	int place_articulation = 0;
 
 	NextItem(tSTRING);
 	if (compile_phoneme) {
 	phoneme_out->start_type = 0;
 	phoneme_out->end_type = 0;
 	phoneme_out->length_mod = 0;
+	phoneme_out->phflags = 0;
 
 	while (!endphoneme && !feof(f_in)) {
 		if ((keyword = NextItem(tKEYWORD)) < 0) {
 				error("More than one phoneme type: %s", item_string);
 			phoneme_out->type = keyword;
 			break;
-		case tPLACE:
-			if (place_articulation > 0)
-				error("Place of articulation has already been given: %s", item_string);
-			place_articulation = keyword;
-			break;
 		case tPHONEME_FLAG:
 			phoneme_flags |= keyword;
 			break;
 			error("Phoneme type is missing");
 			phoneme_out->type = 0;
 		}
-		phoneme_out->phflags = place_articulation << 16;
 		phoneme_out->phflags |= phoneme_flags;
 
 		if (phoneme_out->phflags & phVOICED) {

src/libespeak-ng/phoneme.c

 	vwl = FEATURE('v', 'w', 'l'),
 	lat = FEATURE('l', 'a', 't'),
 	sib = FEATURE('s', 'i', 'b'),
+	// place of articulation
+	blb = FEATURE('b', 'l', 'b'),
+	lbd = FEATURE('l', 'b', 'd'),
+	bld = FEATURE('b', 'l', 'd'),
+	dnt = FEATURE('d', 'n', 't'),
+	alv = FEATURE('a', 'l', 'v'),
+	pla = FEATURE('p', 'l', 'a'),
+	rfx = FEATURE('r', 'f', 'x'),
+	alp = FEATURE('a', 'l', 'p'),
+	pal = FEATURE('p', 'a', 'l'),
+	vel = FEATURE('v', 'e', 'l'),
+	lbv = FEATURE('l', 'b', 'v'),
+	uvl = FEATURE('u', 'v', 'l'),
+	phr = FEATURE('p', 'h', 'r'),
+	glt = FEATURE('g', 'l', 't'),
 };
 
 uint32_t lookup_feature(const char *feature) {
 	case sib:
 		phoneme->phflags |= phSIBILANT;
 		break;
+	// place of articulation
+	case blb:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 1 << 16;
+		break;
+	case lbd:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 2 << 16;
+		break;
+	case dnt:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 3 << 16;
+		break;
+	case alv:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 4 << 16;
+		break;
+	case rfx:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 5 << 16;
+		break;
+	case pla:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 6 << 16;
+		break;
+	case pal:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 7 << 16;
+		break;
+	case vel:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 8 << 16;
+		break;
+	case lbv:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 9 << 16;
+		break;
+	case uvl:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 10 << 16;
+		break;
+	case phr:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 11 << 16;
+		break;
+	case glt:
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 12 << 16;
+		break;
+	case bld:
+		// FIXME: Not supported by eSpeak. Used in German p͡f.
+		break;
+	case alp:
+		// FIXME: Not supported by eSpeak. Used in Chinese/Japanese ɕ and ʑ.
+		break;
 	// invalid phoneme feature
 	default:
 		return create_name_error_context(context, ENS_UNKNOWN_PHONEME_FEATURE, feature);