Define some Elvish diphthongs

Not all of the diphthongs in Quenya and Sindarin are defined in the
Latin phonemes, and for now we’re sticking to those, so some diphthongs
just get TODOs for now. Also, we’re temporarily using the same phoneme
for ⟨ae⟩/⟨ai⟩ and ⟨oe⟩/⟨oi⟩, which should really be different (though
Appendix E of The Lord of the Rings notes that ⟨ae⟩ and ⟨oe⟩ don’t have
close English equivalents, and that they “may be pronounced as ai, oi”).

dictsource/qya_rules

@@ -9,6 +9,8 @@
 
 .group a
 	a	a
+	ai (+	aI
+	au (+	aU
 	// light penultimate syllable: put stress on antepenultimate
 	a (AX	=a
 	a (CAX	=a
@@ -38,6 +40,7 @@
 
 .group e
 	e	e
+	eu (+	EU
 	// light penultimate syllable: put stress on antepenultimate
 	e (AX	=e
 	e (CAX	=e
@@ -61,6 +64,7 @@
 
 .group i
 	i	i
+	// TODO iu (no suitable diphthong in ph_latin)
 	// light penultimate syllable: put stress on antepenultimate
 	i (AX	=i
 	i (CAX	=i
@@ -88,6 +92,7 @@
 
 .group o
 	o	o
+	oi (+	OI
 	// light penultimate syllable: put stress on antepenultimate
 	o (AX	=o
 	o (CAX	=o
@@ -125,6 +130,7 @@
 
 .group u
 	u	u
+	// TODO ui (no suitable diphthong in ph_latin)
 	// light penultimate syllable: put stress on antepenultimate
 	u (AX	=u
 	u (CAX	=u

dictsource/sjn_rules

@@ -10,6 +10,9 @@
 
 .group a
 	a	a
+	ae (+	aI // TODO ae and ai should be different
+	ai (+	aI
+	au (+	aU
 	// light penultimate syllable: put stress on antepenultimate
 	a (AX	=a
 	a (CAX	=a
@@ -39,6 +42,7 @@
 
 .group e
 	e	e
+	ei (+	eI
 	// light penultimate syllable: put stress on antepenultimate
 	e (AX	=e
 	e (CAX	=e
@@ -93,6 +97,7 @@
 
 .group o
 	o	o
+	oe (+	OI // TODO oe and oi should be different
 	// light penultimate syllable: put stress on antepenultimate
 	o (AX	=o
 	o (CAX	=o
@@ -130,6 +135,7 @@
 
 .group u
 	u	u
+	// TODO ui (no suitable diphthong in ph_latin)
 	// light penultimate syllable: put stress on antepenultimate
 	u (AX	=u
 	u (CAX	=u

tests/language-pronunciation.test

@@ -186,7 +186,7 @@ S'a
 'OksidU
 p'or-
 z'&~Ng&U~_:_: ,E*&U~ p,&l'avR&Z dU p,u*@-tug'es#" "Luís argüia à Júlia que «brações, fé, chá, óxido, pôr, zângão» eram palavras do português." "Latn"
-test_phon qya ",ainul'indal,e ald'iNga ank'alim,a and'u:Ril k,uivi;'e:nen ,eaR'endil el'endil ,elent'a:Ri; el'essaR e'onwe eR'esse,a h,elkaR'akse is'ilduR nam'a:Ri;,e n,u:men'o:Re 'oRom,e pel'o:Ri tuR'ambaR und'o:mi;,el ut'umno" "Ainulindalë aldinga ancalima Andúril Cuiviénen Eärendil Elendil Elentári Elessar Eönwe Eressëa Helcaraxë Isildur Namárië Númenórë Orome Pelóri Turambar Undómiel Utumno" "Quenya"
+test_phon qya ",aInul'indal,e ald'iNga ank'alim,a and'u:Ril k,uivi;'e:nen ,eaR'endil el'endil ,elent'a:Ri; el'essaR e'onwe eR'esse,a h,elkaR'akse is'ilduR nam'a:Ri;,e n,u:men'o:Re 'oRom,e pel'o:Ri s'aURon tuR'ambaR und'o:mi;,el ut'umno" "Ainulindalë aldinga ancalima Andúril Cuiviénen Eärendil Elendil Elentári Elessar Eönwe Eressëa Helcaraxë Isildur Namárië Númenórë Orome Pelóri Sauron Turambar Undómiel Utumno" "Quenya"
 test_phon ro "m,uzikol'og@_! yn b'eZ v'ynd wh'iski Si tekw'ila
 p@-*'ets f'iks" "Muzicologă în bej vând whisky și tequila, preț fix." "Latn"
 test_phon ru "Syr'okVja E#l;ikt@-r;if;ik'Atsyja 'juZnyx gub;'ern;ij d'Ast m'oS;nyj tVltS;'ok pVdj'8mu s;'elskVvV xVz;'Ajstva#" "Широкая электрификация южных губерний даст мощный толчок подъёму сельского хозяйства." "Cyrl"
@@ -194,7 +194,7 @@ test_phon sd "s'Indhi b'o:li; 'Ind.o: jo:R'Vpi xa:nd'a:n s'a~: t[a:l'Vq R,@k#@nd
 J'Vnhn t['e: ,aRb'i: bo:l'i:;a J'o: b'I t[@m'a:m v'Vd.o: as'VR ,a:he:
 h'Ina v'aqt s'Indhi b'o:li s'Indh J'e: m'Vk# b'o:li_! 'ae~ d,@f@t['VRi z@b'a:n ,a:he:" "سنڌي ٻولي انڊو يورپي خاندان سان تعلق رکندڙ آريائي ٻولي آھي، جنھن تي عربي ٻوليءَ جو بہ تمام وڏو اثر آهي. هن وقت سنڌي ٻولي سنڌ جي مک ٻولي ۽ دفتري زبان آھي." "Arab"
 test_phon si "t'aw@t st#'a:n@ k'i:p@j,@kin w'a:rta: w'u: s'ul.u p'ipiri:m s'ah@ d'e:s@p,a:l@n@ p'akS@ k r'ija:k,a:ri:n 'at@r@ '&tiwu: g'&t.um h'e:tuwen 'ek 'ajeku m'ij@gos k'i:p@ d'eneku t'uwa:l@ l'aba: t'ibe:" "තවත් ස්ථාන කීපයකින් වාර්තා වූ සුළු පිපිරීම් සහ දේශපාලන පක්ෂ ක්‍රියාකාරීන් අතර ඇතිවූ ගැටුම් හේතුවෙන් එක් අයෙකු මියගොස් කීප දෙනෙකු තුවාල ලබා තිබේ." "Sinh"
-test_phon sjn "'alf 'aman 'amaRT 'amon 'aRag,oRn bel'eRi;,and b'oRom,iR bRag'ollax bR'eTil bRiT'ombaR kaR'aDRas k,elebR'i:an d'eneT,oR dR'eNgist d'u::n ekT'eli;,on 'emyn eR'i;ad,oR f'ean,oR f'iNgon fiNg'olfin fin'aRfin f'oRox,el g'alaD,on gal'adRi;,el gR'ond j'aRwa,in j'oReT iT'ili;,en loTl'o:Ri;,en miTR'andiR moR'annon m'oRi;,a osg'ili;,aT pal'anti:R p,alant'i:Ri pel'ennoR p,eRi;'annaT sil'ivRen ToR'ondoR" "alph Aman Amarth Amon Aragorn Beleriand Boromir Bragollach Brethil Brithombar Caradhras Celebrían Denethor Drengist dûn Ecthelion Emyn Eriador Fëanor Fingon Fingolfin Finarfin Forochel Galadhon Galadriel Grond Iarwain Ioreth Ithilien Lothlórien Mithrandir Morannon Moria Osgiliath Palantír Palantíri Pelennor Periannath Silivren Thorondor" "Sindarin"
+test_phon sjn "'alf 'aman 'amaRT 'amon 'aRag,oRn aRn'OIdi;,ad bel'eRi;,and b'oRom,iR bRag'ollax bR'eTil bRiT'ombaR k'aIR kaR'aDRas k,elebR'i:an kRiss'aIgRim d'eneT,oR dR'eNgist d'u::n ekT'eli;,on 'emyn eR'i;ad,oR f'ean,oR f'iNgon fiNg'olfin fin'aRfin f'oRox,el g'alaD,on gal'adRi;,el gR'ond gw'aIhiR j'aRwaIn j'oReT iT'ili;,en loTl'o:Ri;,en miT'eITel miTR'andiR moR'annon m'oRi;,a osg'ili;,aT pal'anti:R p,alant'i:Ri pel'ennoR p,eRi;'annaT sil'ivRen ToR'ondoR" "alph Aman Amarth Amon Aragorn Arnoediad Beleriand Boromir Bragollach Brethil Brithombar Cair Caradhras Celebrían Crissaegrim Denethor Drengist dûn Ecthelion Emyn Eriador Fëanor Fingon Fingolfin Finarfin Forochel Galadhon Galadriel Grond Gwaihir Iarwain Ioreth Ithilien Lothlórien Mitheithel Mithrandir Morannon Moria Osgiliath Palantír Palantíri Pelennor Periannath Silivren Thorondor" "Sindarin"
 test_phon sk "k'r:d;el^ St;'astni:Q d;'atl^ow 'utSi: pR'i;u:st;i: v'a:hu m'l:kveho k'on^a 'ophRi:zat; k'uoRu_:_: a ZR'at; tS'eRstve: m'eso
 p'et;ti:Zdn^,ove: v'l:tSata: n'eRvo:zn^e St;'ekaju: n'amu,ojho d;'atl^a_! v_ t'r:n^i:" "Kŕdeľ šťastných ďatľov učí pri ústí Váhu mĺkveho koňa obhrýzať kôru a žrať čerstvé mäso. Päťtýždňové vĺčatá nervózne štekajú na môjho ďatľa v tŕní." "Latn"
 test_phon sl "xiSn'i:tSin bR'a:tEts uzg'a:ja p'o:wZE p'o:t fik'u:sOm" "Hišničin bratec vzgaja polže pod fikusom." "Latn"