const ss = SpreadsheetApp.getActive();
/**
* This function decodes URL-encoded strings in a Google Sheets cell.
* @param {GoogleAppsScript.Spreadsheet.Range} [active=SpreadsheetApp.getActiveRange()] The range to decode.
* in a Google Sheets spreadsheet. If no range is specified, it defaults to the currently active range.
* The `active` parameter is used in the `decode` function to get the values of the active range and
* decode any encoded characters
*/
const decode = (active = ss.getActiveRange()) => {
const sheet = SpreadsheetApp.getActiveSheet();
const values = active.getValues().map(([source]) => [decodeURIComponent(source.toString().replace(/\+/g, ' '))]);
sheet
.getRange(active.getRow(), active.getColumn(), active.getNumRows(), 1)
.setValues(values);
// Browser.msgBox("Decoded: "+ active);
};