Enable emmet.syntaxProfiles configuration item to support custom language Id

Author: C0DECHEF

src/emmetHelper.ts

@@ -23,8 +23,11 @@ import { parseSnippets, SnippetsMap, syntaxes } from './configCompat';
 export { FileService, FileType, FileStat };
 
 let l10n: { t: (message: string) => string };
+let getProfileOfCurrentLanguageId = (profilesConfig: any) => null;
 try {
-	l10n = require('vscode').l10n;
+	var vscode = require('vscode');
+	l10n = vscode.l10n;
+	getProfileOfCurrentLanguageId = (profilesConfig: any) => profilesConfig[vscode.window.activeTextEditor.document.languageId];
 } catch {
 	// Fallback to the identity function.
 	l10n = {
@@ -851,7 +854,7 @@ function getProfile(syntax: string, profilesFromSettings: any): any {
 	}
 	const profilesConfig = Object.assign({}, profilesFromFile, profilesFromSettings);
 
-	const options = profilesConfig[syntax];
+	const options = getProfileOfCurrentLanguageId(profilesConfig) || profilesConfig[syntax];
 	if (!options || typeof options === 'string') {
 		if (options === 'xhtml') {
 			return {