Insert user-configurable string when autocompleting nicks

Fixes #1176

client/js/autocompletion.js

@@ -4,6 +4,7 @@ const $ = require("jquery");
 const fuzzy = require("fuzzy");
 const Mousetrap = require("mousetrap");
 const emojiMap = require("./libs/simplemap.json");
+const options = require("./options");
 const constants = require("./constants");
 
 const input = $("#input");
@@ -56,8 +57,19 @@ const nicksStrategy = {
 	template([string]) {
 		return string;
 	},
-	replace([, original]) {
+	replace([, original], position = 1) {
-		return original;
+		// If no postfix specified, return autocompleted nick as-is
+		if (!options.nickPostfix) {
+			return original;
+		}
+
+		// If there is whitespace in the input already, append space to nick
+		if (position > 0 && /\s/.test(input.val())) {
+			return original + " ";
+		}
+
+		// If nick is first in the input, append specified postfix
+		return original + options.nickPostfix;
 	},
 	index: 1,
 };
@@ -152,11 +164,13 @@ const backgroundColorStrategy = {
 
 function enableAutocomplete() {
 	let tabCount = 0;
+	let lastMatch = "";
 	let currentMatches = [];
 
 	input.on("input.tabcomplete", () => {
 		tabCount = 0;
 		currentMatches = [];
+		lastMatch = "";
 	});
 
 	Mousetrap(input.get(0)).bind("tab", (e) => {
@@ -172,27 +186,26 @@ function enableAutocomplete() {
 			return;
 		}
 
-		let lastWord;
-
 		if (tabCount === 0) {
-			lastWord = text.split(/\s/).pop();
+			lastMatch = text.split(/\s/).pop();
 
-			if (lastWord.length === 0) {
+			if (lastMatch.length === 0) {
 				return;
 			}
 
-			currentMatches = completeNicks(lastWord, false);
+			currentMatches = completeNicks(lastMatch, false);
 
 			if (currentMatches.length === 0) {
 				return;
 			}
-		} else {
-			lastWord = nicksStrategy.replace([0, currentMatches[(tabCount - 1) % currentMatches.length]]);
 		}
 
-		const matchedNick = currentMatches[tabCount % currentMatches.length];
+		const position = input.get(0).selectionStart - lastMatch.length;
-		input.val(text.substr(0, input.get(0).selectionStart - lastWord.length) + nicksStrategy.replace([0, matchedNick]));
+		const newMatch = nicksStrategy.replace([0, currentMatches[tabCount % currentMatches.length]], position);
 
+		input.val(text.substr(0, position) + newMatch);
+
+		lastMatch = newMatch;
 		tabCount++;
 	}, "keydown");
 

client/js/options.js

@@ -5,7 +5,6 @@ const escapeRegExp = require("lodash/escapeRegExp");
 const userStyles = $("#user-specified-css");
 const storage = require("./localStorage");
 const tz = require("./libs/handlebars/tz");
-const autocompletion = require("./autocompletion");
 
 const windows = $("#windows");
 const chat = $("#chat");
@@ -13,6 +12,7 @@ const chat = $("#chat");
 // Default options
 const options = {
 	autocomplete: true,
+	nickPostfix: "",
 	coloredNicks: true,
 	desktopNotifications: false,
 	highlights: [],
@@ -43,6 +43,9 @@ userOptions = null;
 
 module.exports = options;
 
+// Due to cyclical dependency, have to require it after exports
+const autocompletion = require("./autocompletion");
+
 module.exports.shouldOpenMessagePreview = function(type) {
 	return type === "link" ? options.links : options.media;
 };
@@ -57,6 +60,8 @@ module.exports.initialize = () => {
 			settings.find("#user-specified-css-input").val(options[i]);
 		} else if (i === "highlights") {
 			settings.find("input[name=" + i + "]").val(options[i]);
+		} else if (i === "nickPostfix") {
+			settings.find("input[name=" + i + "]").val(options[i]);
 		} else if (i === "statusMessages") {
 			settings.find(`input[name=${i}][value=${options[i]}]`)
 				.prop("checked", true);
@@ -149,6 +154,8 @@ module.exports.initialize = () => {
 			} else {
 				module.exports.highlightsRE = null;
 			}
+		} else if (name === "nickPostfix") {
+			options.nickPostfix = options[name];
 		} else if (name === "showSeconds") {
 			chat.find(".msg > .time").each(function() {
 				$(this).text(tz($(this).parent().data("time")));

client/views/windows/settings.tpl

@@ -55,6 +55,13 @@
 				Enable autocomplete
 			</label>
 		</div>
+		<div class="col-sm-12">
+			<label class="opt">
+				<label for="nickPostfix" class="sr-only">Nick autocomplete postfix (e.g. <code>, </code>)</label>
+				<input type="text" id="nickPostfix" name="nickPostfix" class="input" placeholder="Nick autocomplete postfix (e.g. ', ')">
+			</label>
+		</div>
+
 		<div class="col-sm-12">
 			<h2>Theme</h2>
 		</div>