[FIX] t-model expression allow '$' in dot format

Fixes odoo#1322

src/compiler/parser.ts

@@ -304,7 +304,7 @@ function parseTDebugLog(node: Element, ctx: ParsingContext): AST | null {
 // -----------------------------------------------------------------------------
 // Regular dom node
 // -----------------------------------------------------------------------------
-const hasDotAtTheEnd = /\.[\w_]+\s*$/;
+const hasDotAtTheEnd = /\.[\w$_]+\s*$/;
 const hasBracketsAtTheEnd = /\[[^\[]+\]\s*$/;
 
 const ROOT_SVG_TAGS = new Set(["svg", "g", "path"]);

tests/components/__snapshots__/t_model.test.ts.snap

@@ -76,6 +76,25 @@ exports[`t-model directive basic use, on an input 1`] = `
 }"
 `;
 
+exports[`t-model directive basic use, on an input with $ 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { toNumber } = helpers;
+  
+  let block1 = createBlock(\`<div><input block-property-0=\\"value\\" block-handler-1=\\"input\\"/><span><block-text-2/></span></div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const bExpr1 = ctx['state'];
+    const expr1 = '$text';
+    let prop1 = bExpr1[expr1];
+    let hdlr1 = [(ev) => { bExpr1[expr1] = ev.target.value; }];
+    let txt1 = ctx['state'].$text;
+    return block1([prop1, hdlr1, txt1]);
+  }
+}"
+`;
+
 exports[`t-model directive basic use, on an input with bracket expression 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/components/t_model.test.ts

@@ -30,6 +30,25 @@ describe("t-model directive", () => {
     expect(fixture.innerHTML).toBe("<div><input><span>test</span></div>");
   });
 
+  test("basic use, on an input with $", async () => {
+    class SomeComponent extends Component {
+      static template = xml`
+        <div>
+          <input t-model="state.$text"/>
+          <span><t t-esc="state.$text"/></span>
+        </div>`;
+      state = useState({ $text: "" });
+    }
+    const comp = await mount(SomeComponent, fixture);
+
+    expect(fixture.innerHTML).toBe("<div><input><span></span></div>");
+
+    const input = fixture.querySelector("input")!;
+    await editInput(input, "test");
+    expect(comp.state.$text).toBe("test");
+    expect(fixture.innerHTML).toBe("<div><input><span>test</span></div>");
+  });
+
   test("t-model on an input with an undefined value", async () => {
     class SomeComponent extends Component {
       static template = xml`<input t-model="state.text"/>`;