Add constants for use with PHONEME_LIST.newword.

src/libespeak-ng/phonemelist.c

 
 			if (plist3->sourceix != 0) {
 				phlist[ix].sourceix = plist3->sourceix;
-				phlist[ix].newword = 1; // this phoneme is the start of a word
+				phlist[ix].newword = PHLIST_START_OF_WORD;
 
 				if (start_sentence) {
-					phlist[ix].newword = 5; // start of sentence + start of word
+					phlist[ix].newword |= PHLIST_START_OF_SENTENCE;
 					start_sentence = false;
 				}
 			} else
 			ix++;
 		}
 	}
-	phlist[ix].newword = 2; // end of clause
+	phlist[ix].newword = PHLIST_END_OF_CLAUSE;
 
 	phlist[ix].phcode = phonPAUSE;
 	phlist[ix].type = phPAUSE; // terminate with 2 Pause phonemes

src/libespeak-ng/setlengths.c

 			if (p2->ph->code == phonPAUSE_CLAUSE)
 				end_of_clause = 2;
 
-			if ((p2->newword & 2) && (more_syllables == 0))
+			if ((p2->newword & PHLIST_END_OF_CLAUSE) && (more_syllables == 0))
 				end_of_clause = 2;
 
 			// calc length modifier

src/libespeak-ng/synth_mbrola.c

 		if (p->synthflags & SFLAG_EMBEDDED)
 			DoEmbedded(&embedded_ix, p->sourceix);
 
-		if (p->newword & 4)
+		if (p->newword & PHLIST_START_OF_SENTENCE)
 			DoMarker(espeakEVENT_SENTENCE, (p->sourceix & 0x7ff) + clause_start_char, 0, count_sentences);
-		if (p->newword & 1)
+		if (p->newword & PHLIST_START_OF_SENTENCE)
 			DoMarker(espeakEVENT_WORD, (p->sourceix & 0x7ff) + clause_start_char, p->sourceix >> 11, clause_start_word + word_count++);
 
 		name = GetMbrName(p, ph, ph_prev, ph_next, &name2, &len_percent, &control);

src/libespeak-ng/synthesize.c

 
 			sourceix = (p->sourceix & 0x7ff) + clause_start_char;
 
-			if (p->newword & 4)
+			if (p->newword & PHLIST_START_OF_SENTENCE)
 				DoMarker(espeakEVENT_SENTENCE, sourceix, 0, count_sentences); // start of sentence
 
-			if (p->newword & 1)
+			if (p->newword & PHLIST_START_OF_WORD)
 				DoMarker(espeakEVENT_WORD, sourceix, p->sourceix >> 11, clause_start_word + word_count++); // NOTE, this count doesn't include multiple-word pronunciations in *_list. eg (of a)
 		}
 

src/libespeak-ng/synthesize.h

 	unsigned char tone_ph;    // tone phoneme to use with this vowel
 } PHONEME_LIST2;
 
+#define PHLIST_START_OF_WORD     1
+#define PHLIST_END_OF_CLAUSE     2
+#define PHLIST_START_OF_SENTENCE 4
+
 typedef struct {
 	// The first section is a copy of PHONEME_LIST2
 	unsigned short synthflags;
 	unsigned char prepause;
 	unsigned char postpause;
 	unsigned char amp;
-	unsigned char newword;   // bit 0=start of word, bit 1=end of clause, bit 2=start of sentence
+	unsigned char newword;   // bit flags, see PHLIST_(START|END)_OF_*
 	unsigned char pitch1;
 	unsigned char pitch2;
 	unsigned char std_length;