[1.25.14] Added feature to define collections of letter sequences in *_rules files for use in rules.

lang=pt  Reduce phoneme [&~] to [&] in unstressed syllables.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@30 d46cf337-b52f-0410-862d-fd96e6ae7743

dictsource/de_rules

@@ -421,6 +421,7 @@
           &) schaft (_S6  Saft
              schein (lich S'aIn
              schwer       Sve:*
+          _) selbst (@@P6 z'Elpst
              shop         _^_EN
           _) sky          _^_EN
              soldat       z%OldA:t

dictsource/dict_phonemes

@@ -217,9 +217,9 @@ o~   U    u    uI   u~   y
 
 *    :    ;    b    C    d    dZ   f    
 g    h    j    k    l    l^   m    n    
-N    n^   p    Q    r    R    s    S    
-s#   s;   t    T    tS   ts   v    w    
-x    z    Z    
+N    n^   p    Q    r    R    r-   s    
+S    s#   s;   t    T    tS   ts   v    
+w    x    z    Z    
 
 
 Dictionary ru_dict

dictsource/hu_list

@@ -46,7 +46,7 @@ mm      milime:tER
 
 ill	illEdvE  $dot
 stb	SAtYb:i  $dot
-vö	vEZd _!'Yss2E
+vö	v'EZd||_'Yss2E
 pl	pe:lda:ul  $dot
 mta	$abbrev
 a.m	An^n^i||m'int  $dot
@@ -200,17 +200,17 @@ a	A: $atend     // letter "a"
 b	be:
 c	tse:
 d	de:
-f	Ef
+f	Eff
 g	ge:
 h	ha:
 j	je:
 k	ka:
-l	El
-m	Em
-n	En
+l	Ell
+m	Emm
+n	Enn
 p	pe:
 q	ku
-r	ER
+r	ERR
 s	S_
 s	ES  $atend
 _s	ES

dictsource/is_rules

@@ -1,7 +1,7 @@
 // Spelling-to-phoneme rules for Icelandic
 // This file is UTF8 encoded.
 
-// letter group L08  voiceless consonants
+// letter group B  voiceless consonants c,f,h,k,p,t,x,þ
 // letter group F  p,t,k,s
 // letter group H  j,r,v,
 
@@ -43,7 +43,7 @@
 
 .group ð
         ð        D
-        ð (L08   T
+        ð (B     T
         ð (__    T    // before pause
 
 
@@ -154,23 +154,23 @@
 .group l
         l        l
         l (_     l#
-        l (L08X  l#
+        l (BX    l#
         ll       dl
-        ll (L08  tl#
+        ll (B8   tl#
         ll (_    tl#  // ??
 
 
 .group m
         m        m
         mm (K    m
-   L08) m        hm#
-        m (L08   m#
+     B) m        hm#
+        m (B     m#
 
 
 .group n
         n        n
-   L08) n        hn#
-        n (L08   n#
+     B) n        hn#
+        n (B     n#
         n (g     N
         ng (_    Ng
         ngt (K   N#d
@@ -209,7 +209,7 @@
 .group p
      _) p        p
         p        p
-   L08) p        b
+     B) p        b
      s) p        b
         p (K     b
         p (s     f
@@ -226,8 +226,8 @@
      _) r        R2
      C) r        @-*
      A) r (A     R
-   L08) r        r#
-        r (L08   r#
+     B) r        r#
+        r (B     r#
         r (_     r#
         r        R
         rl       dl
@@ -244,7 +244,7 @@
 .group t
      _) t        t
         t        t
-   L08) t        d
+     B) t        d
      s) t        d
         t (K     d
         tt       hd

dictsource/pt_rules

@@ -28,8 +28,8 @@
           a (r_      'a
 ?1     p) a (d_      =E
           a (CC_     &
-?1        al (_      'Al // eg: Portugal, capital, etc.
-?1        a (lK      ,A   // Algarve, alto, etc...
+?1        a (l_      'A       // eg: Portugal, capital, etc.
+?1        a (lK      ,A       // Algarve, Almerinda, etc...
 ?2        al (K      aU
 ?2        alh        alj
 
@@ -141,10 +141,10 @@
           e (cem_    E
           e (ces_    E
 
-e (stA_    E
+          e (stA_    E
           e (stAm_   E
           e (stAs_   E
-        e (strA_        E
+          e (strA_        E
 
           e (rnA_    E
           e (rnAm_    E
@@ -157,7 +157,7 @@ e (stA_    E
           e (xA_     E
           e (xAm_    E
           e (xAs_    E
-?2        _n) e (t        E
+?2    _n) e (t       E
 
           em (C      eIm
           en (K      eIN
@@ -475,7 +475,7 @@ e (stA_    E
        l) r          x
        n) r          x
        s) r          x
-?1     A) r (_       r // this letter is imperfect.
+?1     A) r (_       r-       // [r-] is English linking-r
 
 
 .group s

dictsource/ru_rules

@@ -9,8 +9,6 @@
 // G  voiced: б в г д ж з
 // H  hard consonant:  ъ ж ц ш
 // Y  iotated vowel, softsign:  ь е ё и ю я
-// L08 кпстфх
-// L09 бгджзлмнр
 
 
 .group а

phsource/compile_report

@@ -24,8 +24,8 @@
       ru  36  123
       it  25  114
       es   6  114
-      pt  34  137
-   pt_pt  20  137
+      pt  28  131
+   pt_pt  20  131
       ro  36  138
       el   8  114
       sv  25  117
@@ -418,14 +418,14 @@
   2  vowel/@_4      nl hr
   3  vowel/8_2      en_us hr sv
   1  vowel/8_3      zh_yue
- 12  vowel/a        en_n cy de hu nl pl sk hr pt
+ 11  vowel/a        en_n cy de hu nl pl sk hr
   4  vowel/a#       en_sc it pt
   6  vowel/a_2      eo it pt pt_pt ro vi
-  5  vowel/a#_2     hr pt sv is sw
-  7  vowel/a_3      en_sc cs pt is
+  4  vowel/a#_2     hr sv is sw
+  6  vowel/a_3      en_sc cs is
  12  vowel/a#_3     en en_n en_us en_wm de hi ru pt_pt vi zh_yue
   4  vowel/a_4      en_wm el vi
-  3  vowel/a_5      pt sv sw
+  2  vowel/a_5      sv sw
   7  vowel/aa       en_us fi fr_ca no zh_yue
   1  vowel/aa#      fi
   3  vowel/aa_2     en cy
@@ -433,7 +433,7 @@
   2  vowel/aa_4     sv vi
   2  vowel/aa_5     en_n
   1  vowel/aa_6     de
-  2  vowel/aa_7     nl pt
+  1  vowel/aa_7     nl
   4  vowel/a_en     en fr
   1  vowel/@_bck    hi
  13  vowel/e        en en_n af cy eo fr hu hr it pt pt_pt vi
@@ -513,7 +513,7 @@
   2  vowel/V        en en_sc
   3  vowel/V_2      af ru
   3  vowel/V_3      en_rp hi vi
-  2  vowel/V_4      en_sc pt
+  1  vowel/V_4      en_sc
   6  vowel/y        en de fi hu nl zh_yue
  10  vowel/y#       en en_wm de fi fr hu nl ro vi zh_yue
   1  vowel/y##      is

phsource/ph_af

@@ -255,7 +255,7 @@ endphoneme
 
 
 phoneme r
-  liquid
+  liquid  starttype #r endtype #r
   length 60
   vowelin  f1=2  f2=2700 -300 -200  f3=-1300 80  
   vowelout f1=2  f2=1700 -300 -200  f3=-1300 80

phsource/ph_dutch

@@ -139,7 +139,7 @@ endphoneme
 
 
 phoneme r    // from Afrikaans
-  liquid
+  liquid  starttype #r endtype #r
   length 60
   vowelin  f1=2  f2=2700 -300 -200  f3=-1300 80  
   vowelout f1=2  f2=1700 -300 -200  f3=-1300 80

phsource/ph_pt_brazil

@@ -32,6 +32,7 @@ phoneme &~
   vowel  starttype (@) endtype (@)
   length 200
   formants vnasal/a#_n
+  reduceto &  4
 endphoneme
 
 phoneme &U~
@@ -63,48 +64,12 @@ phoneme &/       // Used for final "a" when next word starts with "a"
 endphoneme
 
 
-phoneme A            // for "al" in European Portuguese
-  vowel starttype (a) endtype (a)
-  length 200
-  formants vowel/a_3
-endphoneme
-
-phoneme A2            // for "al" in European Portuguese
-  vowel starttype (a) endtype (a)
-  length 200
-  formants vowel/aa_7
-endphoneme
-
-phoneme A3            // for "al" in European Portuguese
-  vowel starttype (a) endtype (a)
-  length 200
-  formants vowel/a_5
-endphoneme
-
-phoneme A4            // for "al" in European Portuguese
+phoneme A            // for "al" in European Portuguese, don't reduce to [&]
   vowel starttype (a) endtype (a)
   length 200
   formants vowel/a_2
 endphoneme
 
-phoneme A5            // for "al" in European Portuguese
-  vowel starttype (a) endtype (a)
-  length 200
-  formants vowel/a
-endphoneme
-
-phoneme A6            // for "al" in European Portuguese
-  vowel starttype (a) endtype (a)
-  length 200
-  formants vowel/V_4
-endphoneme
-
-phoneme A7            // for "al" in European Portuguese
-  vowel starttype (a) endtype (a)
-  length 200
-  formants vowel/a#_2
-endphoneme
-
 
 
 phoneme E

phsource/phonemes

@@ -402,7 +402,7 @@ phoneme R2   // this is [R] from Slovak/Czech
 endphoneme
 
 phoneme R3  // Afrikaans
-  liquid
+  liquid  starttype #r endtype #r
   length 60
   vowelin  f1=2  f2=2700 -300 -200  f3=-1300 80  
   vowelout f1=2  f2=1700 -300 -200  f3=-1300 80

src/compiledata.cpp

@@ -532,13 +532,15 @@ int Compile::NextItem(int type)
 	{
 		item_string[ix++] = c;
 		c = fgetc(f_in);
+		if(feof(f_in))
+			break;
 		if(item_string[ix-1] == '=')
 			break;
 	}
-	ungetc(c,f_in);
 	item_string[ix] = 0;
 
-	if(feof(f_in)) return(-1);
+	if(!feof(f_in))
+		ungetc(c,f_in);
 
 	keyword = -1;
 

src/compiledict.cpp

@@ -665,7 +665,7 @@ void copy_rule_string(char *string, int &state)
 					c = *p++ - '0';
 					value = *p++ - '0';
 					c = c * 10 + value;
-					if((value < 0) || (value > 9) || (c <= 0) || (c >= N_LETTER_TYPES))
+					if((value < 0) || (value > 9) || (c <= 0) || (c >= N_LETTER_GROUPS))
 					{
 						c = 0;
 						fprintf(f_log,"%5d: Expected 2 digits after 'L'",linenum);
@@ -676,11 +676,11 @@ void copy_rule_string(char *string, int &state)
 					{
 						// pre-rule, put the group number before the RULE_LETTERGP command
 						output[ix++] = c;
-						c = RULE_LETTERGP;
+						c = RULE_LETTERGP2;
 					}
 					else
 					{
-						output[ix++] = RULE_LETTERGP;
+						output[ix++] = RULE_LETTERGP2;
 					}
 					break;
 
@@ -1076,8 +1076,47 @@ void output_rule_group(FILE *f_out, int n_rules, char **rules, char *name)
 
 
 
-int compile_dictrules(FILE *f_in, FILE *f_out, char *fname_temp)
-{//=============================================================
+static int compile_lettergroup(char *input, FILE *f_out)
+{//=====================================================
+	char *p;
+	int group;
+
+	p = input;
+	if(!isdigit(p[0]) || !isdigit(p[1]))
+	{
+		return(1);
+	}
+
+	group = atoi(&p[1]);
+	if(group >= N_LETTER_GROUPS)
+		return(1);
+
+	while(!isspace2(*p)) p++;
+
+	fputc(RULE_GROUP_START,f_out);
+	fputc(RULE_LETTERGP2,f_out);
+	fputc(group + 'A', f_out);
+
+	for(;;)
+	{
+		while(isspace2(*p)) p++;
+		if(*p == 0)
+			break;
+		
+		while((*p & 0xff) > ' ')
+		{
+			fputc(*p++, f_out);
+		}
+		fputc(0,f_out);
+	}
+	fputc(RULE_GROUP_END,f_out);
+
+	return(0);
+}
+
+
+static int compile_dictrules(FILE *f_in, FILE *f_out, char *fname_temp)
+{//====================================================================
 	char *prule;
 	unsigned char *p;
 	int ix;
@@ -1108,6 +1147,16 @@ int compile_dictrules(FILE *f_in, FILE *f_out, char *fname_temp)
 		buf = fgets(buf1,sizeof(buf1),f_in);
 		if((buf != NULL) && (buf[0] == '\r')) buf++;  // ignore extra \r in \r\n 
 
+		if((buf != NULL) && (memcmp(buf,".L",2)==0))
+		{
+			if(compile_lettergroup(&buf[2], f_out) != 0)
+			{
+				fprintf(f_log,"%5d: Bad lettergroup\n",linenum);
+				error_count++;
+			}
+			continue;
+		}
+
 		if((buf == NULL) || (memcmp(buf,".group",6)==0))
 		{
 			// next .group or end of file, write out the previous group

src/dictionary.cpp

@@ -213,6 +213,7 @@ void Translator::InitGroups(void)
 		groups2_count[ix]=0;
 		groups2_start[ix]=255;  // indicates "not set"
 	}
+	memset(letterGroups,0,sizeof(letterGroups));
 
 	p = data_dictrules;
 	while(*p != 0)
@@ -223,30 +224,44 @@ void Translator::InitGroups(void)
 			break;
 		}
 		p++;
-		len = strlen(p);
-		p_name = p;
-		c = p_name[0];
-		
-		p += (len+1);
-		if(len == 1)
+
+		if(p[0] == RULE_LETTERGP2)
 		{
-			groups1[c] = p;
+			ix = p[1] - 'A';
+			p += 2;
+			if((ix >= 0) && (ix < N_LETTER_GROUPS))
+			{
+				letterGroups[ix] = p;
+			}
 		}
 		else
-		if(len == 0)
 		{
-			groups1[0] = p;
+			len = strlen(p);
+			p_name = p;
+			c = p_name[0];
+			
+			p += (len+1);
+			if(len == 1)
+			{
+				groups1[c] = p;
+			}
+			else
+			if(len == 0)
+			{
+				groups1[0] = p;
+			}
+			else
+			{
+				if(groups2_start[c] == 255)
+					groups2_start[c] = n_groups2;
+	
+				groups2_count[c]++;
+				groups2[n_groups2] = p;
+				c2 = p_name[1];
+				groups2_name[n_groups2++] = (c + (c2 << 8));
+			}
 		}
-		else
-		{
-			if(groups2_start[c] == 255)
-				groups2_start[c] = n_groups2;
 
-			groups2_count[c]++;
-			groups2[n_groups2] = p;
-			c2 = p_name[1];
-			groups2_name[n_groups2++] = (c + (c2 << 8));
-		}
 		// skip over all the rules in this group
 		rule_count = 0;
 		while(*p != RULE_GROUP_END)
@@ -589,6 +604,31 @@ return(0);
 
 
 
+int Translator::IsLetterGroup(char *word, int group)
+{//=================================================
+	// match the word against a list of utf-8 strings
+	char *p;
+	char *w;
+
+	p = letterGroups[group];
+
+	while(*p != 0)
+	{
+		w = word;
+		while(*p == *w)
+		{
+			*w++;
+			*p++;
+		}
+		if(*p == 0)
+			return(w-word);   // matched a complete string
+
+		while(*p++ != 0);  // skip to end of string
+	}
+	return(0);
+}
+
+
 int Translator::IsLetter(int letter, int group)
 {//============================================
 	if(letter_groups[group] != NULL)
@@ -1412,8 +1452,9 @@ char *Translator::DecodeRule(const char *group, char *rule)
 	static char output[60];
 
 	static char symbols[] = {' ',' ',' ',' ',' ',' ',' ',' ',' ',
-			'@','&','%','+','#','S','D','Z','A','B','C','H','F','G','Y','N','K','V','L','T','X','?','W'};
+			'@','&','%','+','#','S','D','Z','A','L',' ',' ',' ',' ',' ','N','K','V',' ','T','X','?','W'};
 
+	static char symbols_lg[] = {'A','B','C','H','F','G','Y'};
 
 	match_type = 0;
    buf_pre[0] = 0;
@@ -1465,25 +1506,23 @@ char *Translator::DecodeRule(const char *group, char *rule)
 		}
 		else
 		if(rb == RULE_LETTERGP)
+		{
+			c = symbols_lg[*rule++ - 'A'];
+		}
+		else
+		if(rb == RULE_LETTERGP2)
 		{
 			value = *rule++ - 'A';
-			if(value >= 8)
-			{
-				p[0] = 'L';
-				p[1] = (value / 10) + '0';
-				c = (value % 10) + '0';
+			p[0] = 'L';
+			p[1] = (value / 10) + '0';
+			c = (value % 10) + '0';
 
-				if(match_type == RULE_PRE)
-				{
-					p[0] = c;
-					c = 'L';
-				}
-				p+=2;
-			}
-			else
+			if(match_type == RULE_PRE)
 			{
-				c = symbols[value + RULE_LETTER_GROUPS];
+				p[0] = c;
+				c = 'L';
 			}
+			p+=2;
 		}
 		else
 		if(rb <= RULE_LAST_RULE)
@@ -1611,6 +1650,7 @@ void Translator::MatchRule(char *word[], const char *group, char *rule, MatchRec
 	int  distance_right;
 	int  distance_left;
 	int  lg_pts;
+	int  n_bytes;
 
 	MatchRecord match;
 	static MatchRecord best;
@@ -1626,6 +1666,7 @@ void Translator::MatchRule(char *word[], const char *group, char *rule, MatchRec
 	if(rule == NULL)
 	{
 		match_out->points = 0;
+		(*word)++;
 		return;
 	}
 
@@ -1752,6 +1793,17 @@ void Translator::MatchRule(char *word[], const char *group, char *rule, MatchRec
 						failed = 1;
 					break;
 
+				case RULE_LETTERGP2:   // match against a list of utf-t strings
+					letter_group = *rule++ - 'A';
+					if((n_bytes = IsLetterGroup(post_ptr-1,letter_group)) >0)
+					{
+						match.points += (20-distance_right);
+						post_ptr += (n_bytes-1);
+					}
+					else
+						failed =1;
+					break;
+
 				case RULE_NOTVOWEL:
 					if(!IsLetter(letter_w,0))
 					{

src/phonemelist.cpp

@@ -419,6 +419,22 @@ if((ph->mnemonic == 't') && ((prev->type == phVOWEL) || (prev->mnemonic == 'n'))
 }
 #endif
 
+		if((ph->reduce_to != 0) && (ph->type != phVOWEL) && !(plist2->synthflags & SFLAG_DICTIONARY))
+		{
+			// reduction for vowels has already been done in SetWordStress
+			int reduce_level;
+
+			if(next->type == phVOWEL)
+			{
+				reduce_level = (ph->phflags >> 28) & 7;
+				if((&plist2[1])->stress < reduce_level)
+				{
+					// look at the stress of the following vowel
+					ph = phoneme_tab[ph->reduce_to];
+				}
+			}
+		}
+
 		if((plist2+1)->synthflags & SFLAG_LENGTHEN)
 		{
 			static char types_double[] = {phFRICATIVE,phVFRICATIVE,phNASAL,phLIQUID,0};

src/synthdata.cpp

@@ -35,8 +35,8 @@
 #include "translate.h"
 #include "wave.h"
 
-const char *version_string = "1.25.13  30.May.07";
-const int version_phdata  = 0x012501;
+const char *version_string = "1.25.14  31.May.07";
+const int version_phdata  = 0x012514;
 
 int option_device_number = -1;
 

src/tr_languages.cpp

@@ -344,7 +344,7 @@ Translator *SelectTranslator(const char *name)
 		{
 			static int stress_amps_is[] = {16,16, 20,20, 20,24, 24,22 };
 			static int stress_lengths_is[8] = {180,155, 200,200, 0,0, 240,250};
-			static const wchar_t is_L08[] = {'c','f','h','k','p','t','x',0xfe,0};  // voiceless conants, including 'þ'  ?? 's'
+			static const wchar_t is_lettergroup_B[] = {'c','f','h','k','p','t','x',0xfe,0};  // voiceless conants, including 'þ'  ?? 's'
 
 			tr = new Translator();
 			SetupTranslator(tr,stress_lengths_is,stress_amps_is);
@@ -356,7 +356,7 @@ Translator *SelectTranslator(const char *name)
 			ResetLetterBits(tr,0x18);
 			SetLetterBits(tr,4,"kpst");   // Letter group F
 			SetLetterBits(tr,3,"jvr");    // Letter group H
-			tr->letter_groups[8] = is_L08;
+			tr->letter_groups[1] = is_lettergroup_B;
 			SetLetterVowel(tr,'y');
 			tr->langopts.numbers = 0xe9;
 			tr->langopts.numbers2 = 0x2;
@@ -656,10 +656,6 @@ Translator_Russian::Translator_Russian() : Translator()
 	static const char ru_voiced[] = {0x11,0x12,0x13,0x14,0x16,0x17,0};    // letter group G  (voiced obstruents)
 	static const char ru_ivowels[] = {0x2c,0x15,0x31,0x18,0x2e,0x2f,0};   // letter group Y  (iotated vowels & soft-sign)
 
-	// these are unicode character codes
-	static const wchar_t ru_L08[] = {0x43a,0x43f,0x441,0x442,0x444,0x445,0};  // кпстфх
-	static const wchar_t ru_L09[] = {0x431,0x433,0x434,0x436,0x43b,0x43c,0x43d,0x440,0};  // бгджзлмнр
-
 	SetupTranslator(this,stress_lengths_ru,stress_amps_ru);
 
 	charset_a0 = charsets[18];   // KOI8-R
@@ -678,9 +674,6 @@ Translator_Russian::Translator_Russian() : Translator()
 	SetLetterBits(this,6,ru_ivowels);
 	SetLetterBits(this,7,ru_vowels);
 
-	letter_groups[8] = ru_L08;        // This is  L08  in ru_rules
-	letter_groups[9] = ru_L09;        // This is  L09  in ru_rules
-
 	langopts.param[LOPT_UNPRONOUNCABLE] = 0x432;    // [v]  don't count this character at start of word
 	langopts.param[LOPT_REGRESSIVE_VOICING] = 1;
 	langopts.param[LOPT_KEEP_UNSTR_VOWEL] = 1;

src/translate.h

@@ -29,6 +29,8 @@
 #define N_RULE_GROUP2    120          // max num of two-letter rule chains
 #define N_HASH_DICT     1024
 #define N_CHARSETS        20
+#define N_LETTER_GROUPS   20
+
 
 /* flags from word dictionary */
 // bits 0-3  stressed syllable,  7=unstressed
@@ -110,18 +112,11 @@
 #define RULE_ENDING		14
 #define RULE_DIGIT		15   // D digit
 #define RULE_NONALPHA	16   // Z non-alpha
-#define RULE_LETTER_GROUPS 17  // 17 to 23
-#define RULE_LETTER1		17   // A vowels
-#define RULE_LETTER2		18   // B 'hard' consonants 
-#define RULE_LETTER3		19   // C all consonants
-#define RULE_LETTER4		20   // H letter group
-#define RULE_LETTER5    21   // F letter group
-#define RULE_LETTER6		22   // G letter group
-#define RULE_LETTER7    23   // Y letter group
+#define RULE_LETTERGP   17   // A B C H F G Y   letter group number
+#define RULE_LETTERGP2  18   // L + letter group number
 #define RULE_NO_SUFFIX  24   // N
 #define RULE_NOTVOWEL   25   // K
 #define RULE_IFVERB     26   // V
-#define RULE_LETTERGP   27   // L + letter group number
 #define RULE_ALT1       28   // T word has $alt attribute
 #define RULE_NOVOWELS   29   // X no vowels up to word boundary
 #define RULE_SPELLING   31   // W while spelling letter-by-letter
@@ -355,8 +350,7 @@ public:
 // holds properties of characters: vowel, consonant, etc for pronunciation rules
 	unsigned char letter_bits[256];
 	int letter_bits_offset;
-#define N_LETTER_TYPES 20
-	const wchar_t *letter_groups[N_LETTER_TYPES];
+	const wchar_t *letter_groups[8];
 
 	/* index1=option, index2 by 0=. 1=, 2=?, 3=! 4=none */
 	unsigned char punct_to_tone[4][5];
@@ -394,6 +388,7 @@ private:
 	void ApplySpecialAttribute(char *phonemes, int dict_flags);
 
 	int IsLetter(int letter, int group);
+	int IsLetterGroup(char *word, int group);
 
 	void CalcPitches_Tone(int clause_tone);
 
@@ -420,6 +415,7 @@ protected:
 	
 	unsigned char groups2_count[256];    // number of 2 letter groups for this initial letter
 	unsigned char groups2_start[256];    // index into groups2
+	char *letterGroups[N_LETTER_GROUPS];
 	
 	int n_ph_list2;
 	PHONEME_LIST2 ph_list2[N_PHONEME_LIST];	// first stage of text->phonemes

src/vowelchart.cpp

@@ -378,7 +378,6 @@ void FindPhonemesUsed(void)
 	int hash;
 	char *p;
 	char *start;
-	char *group;
 	char *next;
 	unsigned char c;
 	int count = 0;
@@ -397,7 +396,12 @@ void FindPhonemesUsed(void)
 		}
 		if(*p == RULE_GROUP_START)
 		{
-			group = p;
+			if(p[1] == RULE_LETTERGP2)
+			{
+				while(*p != RULE_GROUP_END) p++;
+				continue;
+			}
+
 			p += (strlen(p)+1);
 		}