Function startOperation

tools/pythonauto/static/codemirrorepl/codemirrorepl.js:2060–2063

()

        // be awkward, slow, and error-prone), but instead updates are
        // batched and then all combined and executed at once.
        function startOperation() {
            updateInput = userSelChange = textChanged = null;
            changes = []; selectionChanged = false; callbacks = [];
        }
        function endOperation() {
            var reScroll = false, updated;
            if (maxLengthChanged) computeMaxLength();