Add Pontic keyboard

Downstream task:
https://phabricator.wikimedia.org/T376100

rules/pnt/pnt-tilde.js

@@ -0,0 +1,22 @@
+( function ( $ ) {
+	'use strict';
+
+	var pntTilde = {
+		id: 'pnt-tilde',
+		name: 'Pontic tilde',
+		description: 'Pontic tilde',
+		date: '2024-09-26',
+		URL: 'https://github.com/wikimedia/jquery.ime',
+		author: 'Amir E. Aharoni',
+		license: 'GPLv3',
+		version: '1.0',
+		maxKeyLength: 2,
+		patterns: [
+			[ '~"', '\u0308' ], // Combining diaeresis
+			[ '~\\^', '\u030C' ], // Combining caron
+			[ '~:', '\u0324' ] // Combining diaeresis below
+		]
+	};
+
+	$.ime.register( pntTilde );
+}( jQuery ) );

src/jquery.ime.inputmethods.js

@@ -790,6 +790,10 @@
 			name: 'Piemontèis',
 			source: 'rules/pms/pms.js'
 		},
+		'pnt-tilde': {
+			name: 'Pontic tilde',
+			source: 'rules/pnt/pnt-tilde.js'
+		},
 		'roa-tara-GVU': {
 			name: 'Tarandine',
 			source: 'rules/roa-tara/roa-tara.js'
@@ -1570,6 +1574,10 @@
 			autonym: 'Piemontèis',
 			inputmethods: [ 'pms' ]
 		},
+		pnt: {
+			autonym: 'Ποντιακά',
+			inputmethods: [ 'pnt-tilde' ]
+		},
 		rif: {
 			autonym: 'ⵜⴰⵔⵉⴼⵉⵜ',
 			inputmethods: [ 'ber-tfng' ]

test/jquery.ime.test.fixtures.js

@@ -5332,6 +5332,16 @@ var palochkaVariants = {
 			{ input: ':A', output: 'Ä', description: 'Piemontèis (local) Ä' }
 		]
 	},
+	{
+		description: 'Pontic input method test',
+		inputmethod: 'pnt-tilde',
+		tests: [
+			{ input: 'Σ~^σ~^ς~^Ξ~^ξ~^Χ~^χ~^Ζ~^ζ~^Ψ~^ψ~^', output: 'Σ̌σ̌ς̌Ξ̌ξ̌Χ̌χ̌Ζ̌ζ̌Ψ̌ψ̌', description: 'Pontic caron' },
+			{ input: 'Α~"α~"Ο~"ο~"Ά~"ά~"', output: 'Α̈α̈Ο̈ο̈Ά̈ά̈', description: 'Pontic diaeresis above' },
+			{ input: 'Α~:α~:Ο~:ο~:', output: 'Α̤α̤Ο̤ο̤', description: 'Pontic diaeresis below' },
+			{ input: 'Ό~:ό~:Ά~:ά~:Ό~:ό~:', output: 'Ό̤ό̤Ά̤ά̤Ό̤ό̤', description: 'Pontic stress and diaeresis below' }
+		]
+	},
 	{
 		description: 'Tarandine input method test',
 		inputmethod: 'roa-tara-GVU',