[FIX] formatting: do not show escape character

If you want to use double quotes in a string which is part of a formula, you
have to escape it using a backslash (="hello \"world\"")
However, the backslash is shown when displaying the cell content.

closes #3497

Task: 3698283
Signed-off-by: Pierre Rousseau (pro) <pro@odoo.com>

src/helpers/cells/cell_helpers.ts

@@ -10,6 +10,9 @@ import { formatNumber, formatStandardNumber } from "../numbers";
 export function formatValue(value: CellValue, format?: string): string {
   switch (typeof value) {
     case "string":
+      if (value.includes('\\"')) {
+        return value.replace(/\\"/g, '"');
+      }
       return value;
     case "boolean":
       return value ? "TRUE" : "FALSE";

tests/plugins/cell.test.ts

@@ -62,6 +62,12 @@ describe("getCellText", () => {
     });
     expect(result).toBeCancelledBecause(CommandResult.TargetOutOfSheet);
   });
+
+  test("escape character is not display when formatting string", () => {
+    const model = new Model();
+    setCellContent(model, "A1", '="hello \\"world\\""');
+    expect(getCell(model, "A1")?.formattedValue).toBe('hello "world"');
+  });
 });
 
 describe("link cell", () => {