Add Duala Tilde keyboard

Downstream task:
https://phabricator.wikimedia.org/T372173

rules/dua/dua-tilde.js

@@ -0,0 +1,35 @@
+( function ( $ ) {
+	'use strict';
+
+	var duaTilde = {
+		id: 'dua-tilde',
+		name: 'Duala tilde',
+		description: 'Duala tilde keyboard',
+		date: '2024-08-09',
+		URL: 'https://github.com/wikimedia/jquery.ime',
+		author: 'Amir E. Aharoni',
+		license: 'GPLv3',
+		version: '1.0',
+		maxKeyLength: 2,
+		patterns: [
+			[ '~B', 'Ɓ' ],
+			[ '~b', 'ɓ' ],
+			[ '~D', 'Ɗ' ],
+			[ '~d', 'ɗ' ],
+			[ '~E', 'Ɛ' ],
+			[ '~e', 'ɛ' ],
+			[ '~N', 'Ŋ' ],
+			[ '~n', 'ŋ' ],
+			[ '~j', 'ɲ' ],
+			[ '~J', 'Ɲ' ],
+			[ '~O', 'Ɔ' ],
+			[ '~o', 'ɔ' ],
+			[ '~\\\\', '\u0300' ], // Combining grave accent
+			[ '~/', '\u0301' ], // Combining acute accent
+			[ '~\\^', '\u0302' ], // Combining circumflex accent
+			[ '~v', '\u030C' ] // Combining caron
+		]
+	};
+
+	$.ime.register( duaTilde );
+}( jQuery ) );

src/jquery.ime.inputmethods.js

@@ -244,6 +244,10 @@
 			name: 'इनस्क्रिप्ट २',
 			source: 'rules/doi/doi-inscript2.js'
 		},
+		'dua-tilde': {
+			name: 'Duala tilde keyboard',
+			source: 'rules/dua/dua-tilde.js'
+		},
 		'ee-tilde': {
 			name: 'Ewe Tilde',
 			source: 'rules/ee/ee-tilde.js'
@@ -1178,6 +1182,10 @@
 			autonym: 'डोगरी',
 			inputmethods: [ 'doi-inscript2' ]
 		},
+		dua: {
+			autonym: 'Duálá',
+			inputmethods: [ 'dua-tilde' ]
+		},
 		en: {
 			autonym: 'English',
 			inputmethods: [ 'ipa-sil', 'ipa-x-sampa' ]

test/jquery.ime.test.fixtures.js

@@ -1482,6 +1482,27 @@ var palochkaVariants = {
 			{ input: '/', output: 'य', description: 'Dogri InScript 2 /' }
 		]
 	},
+	{
+		description: 'Duala tilde input method test',
+		inputmethod: 'dua-tilde',
+		tests: [
+			{ input: '~b', output: 'ɓ', description: 'Duala tilde ~b' },
+			{ input: '~B', output: 'Ɓ', description: 'Duala tilde ~B' },
+			{ input: '~d', output: 'ɗ', description: 'Duala tilde ~d' },
+			{ input: '~D', output: 'Ɗ', description: 'Duala tilde ~D' },
+			{ input: '~e', output: 'ɛ', description: 'Duala tilde ~e' },
+			{ input: '~E', output: 'Ɛ', description: 'Duala tilde ~E' },
+			{ input: '~n', output: 'ŋ', description: 'Duala tilde ~n' },
+			{ input: '~N', output: 'Ŋ', description: 'Duala tilde ~N' },
+			{ input: '~j', output: 'ɲ', description: 'Duala tilde ~j' },
+			{ input: '~J', output: 'Ɲ', description: 'Duala tilde ~J' },
+			{ input: '~O', output: 'Ɔ', description: 'Duala tilde ~O' },
+			{ input: '~o', output: 'ɔ', description: 'Duala tilde ~o' },
+			{ input: 'Dua~/la~/', output: 'Duálá', description: 'Duala tilde Duálá' },
+			{ input: 'mule~vdi', output: 'mulědi', description: 'Duala tilde mulědi' },
+			{ input: 'a~\\o~^', output: 'àô', description: 'Duala tilde àô' },
+		]
+	},
 	{
 		description: 'Ewe tilde test',
 		inputmethod: 'ee-tilde',