support variable $Titlecase

src/engine/context.ts

@@ -103,8 +103,10 @@ export class Context {
       // matching & replacing: ${var}, $var, #{var}, #var
       // syntax: $var /format:list
       // shorthand: $var :list
-      .replace(/[#$]\{?([a-z][\w_-]*)\}?\s*([\/:][a-z:_-]+)?/g, (match, variable: string, format: string) => {
+      .replace(/[#$]\{?([a-zA-Z][\w_-]*)\}?(\s*[\/:][a-z:_-]+)?/g, (match, variable: string, format: string) => {
         const value = req.variables[variable];
+        // allow multiple spaces repeat in front of a format => so we must trim() it!
+        format = (format || '').trim();
         if (format && /[/:]/.test(format.charAt(0))) {
           let vDirectiveName = format.substring(1);
           if (!/^format/.test(vDirectiveName)) {

test/e2e/delay.spec.ts

@@ -19,6 +19,7 @@ mock
   .onPut('/api/http/put').reply(200, {
     error: 0,
     message: 'Ok',
+    Capitalization: 'NewVar',
   })
   .onDelete('/api/http/delete').reply(200, {
     error: 0,

test/engine/population.spec.ts

@@ -0,0 +1,23 @@
+import { assert } from 'chai';
+import { BotScript, Request } from '../../src/engine';
+
+describe('Population: Variable Capitalization', () => {
+
+  it('should distinguish uppercase or lowercase', async () => {
+    const bot = new BotScript();
+
+    bot.parse(`
+    @ service1 put /api/http/put
+
+    + put me
+    * true @> service1
+    - Result $message $Capitalization
+    `);
+    await bot.init();
+
+    const req = new Request();
+    const res = await bot.handleAsync(req.enter('put me'));
+    assert.equal(res.speechResponse, 'Result Ok NewVar', 'bot response with command executed and distinguish common case');
+  });
+
+});