docs: Capitalize Handlebars consistently.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

docs/overview/changelog.md

@@ -2314,7 +2314,7 @@ running a version from before 1.7 should upgrade directly to 1.7.1.
 ### 1.5.2 -- 2017-06-01
 
 - CVE-2017-0896: Restricting inviting new users to admins was broken.
-- CVE-2015-8861: Insecure old version of handlebars templating engine.
+- CVE-2015-8861: Insecure old version of Handlebars templating engine.
 
 ### 1.5.1 -- 2017-02-07
 

docs/testing/linters.md

@@ -9,7 +9,7 @@ patterns that can lead to security bugs.
 ## Overview
 
 Zulip does extensive linting of much of its source code, including
-Python/JavaScript/TypeScript files, HTML templates (Django/handlebars), CSS files,
+Python/JavaScript/TypeScript files, HTML templates (Django/Handlebars), CSS files,
 JSON fixtures, Markdown documents, puppet manifests, and shell scripts.
 
 For some files we simply check for small things like trailing whitespace,

docs/translating/internationalization.md

@@ -293,7 +293,7 @@ translated block, because they don't work properly with translation.
 The Handlebars expression would be evaluated before the string is
 processed by FormatJS, so that the string to be translated wouldn't be
 constant. We have a linter to enforce that translated blocks don't
-contain handlebars.
+contain Handlebars.
 
 Restrictions on including HTML tags in translated strings are the same
 as in JavaScript. You can insert more complex markup using a local

frontend_tests/node_tests/example8.js

@@ -10,7 +10,7 @@ const $ = require("../zjsunit/zjquery");
     Until now, we had seen various testing techniques, learned
     how to use helper functions like `mock_esm`, `override` of
     `run_test` etc., but we didn't see how to deal with
-    render calls to handlebars templates. We'll learn that
+    render calls to Handlebars templates. We'll learn that
     in this test.
 
     The below code tests the rendering of typing notifications which

frontend_tests/zjsunit/namespace.js

@@ -264,7 +264,7 @@ exports.zrequire = function (short_fn) {
             There is no need to zrequire templates.js.
 
             The test runner automatically registers the
-            Handlebar extensions.
+            Handlebars extensions.
         `,
     );
 

static/js/message_edit.js

@@ -417,7 +417,7 @@ function edit_message($row, raw_content) {
         editability === editability_types.TOPIC_ONLY ||
         editability === editability_types.FULL ||
         is_stream_editable;
-    // current message's stream has been already been added and selected in handlebar
+    // current message's stream has been already been added and selected in Handlebars
     const available_streams = is_stream_editable
         ? stream_data.subscribed_subs().map((stream) => ({
               name: stream.name,

static/js/notifications.js

@@ -531,7 +531,7 @@ export function send_test_notification(content) {
 }
 
 // Note that this returns values that are not HTML-escaped, for use in
-// handlebars templates that will do further escaping.
+// Handlebars templates that will do further escaping.
 function get_message_header(message) {
     if (message.type === "stream") {
         return message.stream + " > " + message.topic;

static/js/templates.js

@@ -3,9 +3,9 @@ import Handlebars from "handlebars/runtime";
 import {default_html_elements, intl} from "./i18n";
 import * as util from "./util";
 
-// Below, we register Zulip-specific extensions to the handlebars API.
+// Below, we register Zulip-specific extensions to the Handlebars API.
 //
-// IMPORTANT: When adding a new handlebars helper, update the
+// IMPORTANT: When adding a new Handlebars helper, update the
 // knownHelpers array in the webpack config so that webpack knows your
 // helper is registered at runtime and don't try to require them when
 // bundling.

static/js/ui_init.js

@@ -590,7 +590,7 @@ export function initialize_everything() {
     // These components must be initialized early, because other
     // modules' initialization has not been audited for whether they
     // expect DOM elements to always exist (As that did before these
-    // modules were migrated from Django templates to handlebars).
+    // modules were migrated from Django templates to Handlebars).
     initialize_left_sidebar();
     initialize_right_sidebar();
     initialize_compose_box();

tools/check-frontend-i18n

@@ -41,7 +41,7 @@ if __name__ == "__main__":
     if not found:
         sys.exit(0)
 
-    print(WARNING + "Translation strings contain handlebars:" + ENDC)
+    print(WARNING + "Translation strings contain Handlebars:" + ENDC)
     print("\n".join(found))
 
     print(

tools/linter_lib/custom_check.py

@@ -137,7 +137,7 @@ js_rules = RuleList(
                 "static/js/dialog_widget.js",
                 "frontend_tests/",
             },
-            "description": "Setting HTML content with jQuery .html() can lead to XSS security bugs.  Consider .text() or using rendered_foo as a variable name if content comes from handlebars and thus is already sanitized.",
+            "description": "Setting HTML content with jQuery .html() can lead to XSS security bugs.  Consider .text() or using rendered_foo as a variable name if content comes from Handlebars and thus is already sanitized.",
         },
         {
             "pattern": "[\"']json/",