closes #3963

public/src/modules/translator.js

@@ -265,6 +265,7 @@
 			path = require('path'),
 			winston = require('winston'),
 			file = require('../../../src/file'),
+			plugins = require('../../../src/plugins'),
 			meta = require('../../../src/meta');
 
 		language = language || meta.config.defaultLang || 'en_GB';
@@ -275,11 +276,7 @@
 		}
 
 		fs.readFile(path.join(__dirname, '../../language', language, filename + '.json'), function(err, data) {
-			if (err) {
-				winston.error('Could not load `' + filename + '`: ' + err.message + '. Skipping...');
-				return callback({});
-			}
-
+			var onData = function(data) {
 				try {
 					data = JSON.parse(data.toString());
 				} catch (e) {
@@ -287,6 +284,27 @@
 					data = {};
 				}
 				callback(data);
+			}
+
+			if (err) {
+				if (err.code === 'ENOENT' && plugins.customLanguageFallbacks.hasOwnProperty(filename)) {
+					// Resource non-existant but fallback exists
+					return fs.readFile(plugins.customLanguageFallbacks[filename], {
+						encoding: 'utf-8'
+					}, function(err, data) {
+						if (err) {
+							return winston.error('[translator] Could not load fallback language file for resource ' + filename);
+						}
+
+						onData(data);
+					})
+				} else {
+					winston.error('[translator] Could not load `' + filename + '`: ' + err.message + '. Skipping...');
+					return callback({});
+				}
+			}
+
+			onData(data);
 		});
 	}