Add Sango tilde method

rules/sg/sg-tilde.js

@@ -0,0 +1,24 @@
+( function ( $ ) {
+	'use strict';
+
+	var sgTilde = {
+		id: 'sg-tilde',
+		name: 'sg-tilde',
+		description: 'Sango tilde keyboard',
+		date: '2019-03-28',
+		URL: 'https://github.com/wikimedia/jquery.ime',
+		author: 'Amir E. Aharoni',
+		license: 'GPLv3',
+		version: '1.0',
+		patterns: [
+			[ '~\\\\', '\u0300' ], // Combining grave
+			[ '~/', '\u0301' ], // Combining acute
+			[ '~\\^', '\u0302' ], // Combining circumflex
+			[ '~\\-', '\u0304' ], // Combining macron
+			[ '~\\:', '\u0308' ], // Combining diaeresis
+			[ '~v', '\u030C' ] // Combining caron
+		]
+	};
+
+	$.ime.register( sgTilde );
+}( jQuery ) );

src/jquery.ime.inputmethods.js

@@ -642,6 +642,10 @@
 			name: 'Normal forms',
 			source: 'rules/se/se-normforms.js'
 		},
+		'sg-tilde': {
+			name: 'Sängö',
+			source: 'rules/sg/sg-tilde.js'
+		},
 		'si-singlish': {
 			name: 'සිංග්ලිෂ්',
 			source: 'rules/si/si-singlish.js'
@@ -1150,6 +1154,10 @@
 			autonym: 'Davvisámegiella',
 			inputmethods: [ 'se-normforms' ]
 		},
+		sg: {
+			autonym: 'Sängö',
+			inputmethods: [ 'sg-tilde' ]
+		},
 		shi: {
 			autonym: 'ⵜⴰⵛⵍⵃⵉⵜ',
 			inputmethods: [ 'ber-tfng' ]

test/jquery.ime.test.fixtures.js

@@ -3776,6 +3776,17 @@ var palochkaVariants = {
 			{ input: '?',  output: '؟', description: 'Southern Kurdish Keyboard Layout: ? -> ؟' }
 		]
 	},
+	{
+		description: 'Sängö tilde test',
+		inputmethod: 'sg-tilde',
+		tests: [
+			{ input: 'se~^hi~:nga~:ngo~:', output: 'sêhïngängö', description: 'Sängö tilde test sêhïngängö' },
+			{ input: 'angba~^',  output: 'angbâ', description: 'Sängö tilde test angbâ' },
+			{ input: 'TE~/LE~/CHARGENGO', output: 'TÉLÉCHARGENGO', description: 'Sängö tilde test TÉLÉCHARGENGO' },
+			{ input: 'Kembe~/',  output: 'Kembé', description: 'Sängö tilde test Kembé' },
+			{ input: 'Mbre~\\s',  output: 'Mbrès', description: 'Sängö tilde test Mbrès' }
+		]
+	},
 	{
 		description: 'Sinhala Wijesekara transliteration tests',
 		inputmethod: 'si-wijesekara',