Call the find function

def find(self, changed=True, forward=True,
             rehighlight=True, start_highlight_timer=False, multiline_replace_check=True):
        """Call the find function"""
        # When several lines are selected in the editor and replace box is activated, 
        # dynamic search is deactivated to prevent changing the selection. Otherwise
        # we show matching items.
        if multiline_replace_check and self.replace_widgets[0].isVisible() and \
           len(to_text_string(self.editor.get_selected_text()).splitlines())>1:
            return None
        text = self.search_text.currentText()
        if len(text) == 0:
            self.search_text.lineEdit().setStyleSheet("")
            if not self.is_code_editor:
                # Clears the selection for WebEngine
                self.editor.find_text('')
            self.change_number_matches()
            return None
        else:
            case = self.case_button.isChecked()
            words = self.words_button.isChecked()
            regexp = self.re_button.isChecked()
            found = self.editor.find_text(text, changed, forward, case=case,
                                          words=words, regexp=regexp)

            stylesheet = self.STYLE[found]
            tooltip = self.TOOLTIP[found]
            if not found and regexp:
                error_msg = regexp_error_msg(text)
                if error_msg:  # special styling for regexp errors
                    stylesheet = self.STYLE['regexp_error']
                    tooltip = self.TOOLTIP['regexp_error'] + ': ' + error_msg
            self.search_text.lineEdit().setStyleSheet(stylesheet)
            self.search_text.setToolTip(tooltip)

            if self.is_code_editor and found:
                block = self.editor.textCursor().block()
                TextHelper(self.editor).unfold_if_colapsed(block)

                if rehighlight or not self.editor.found_results:
                    self.highlight_timer.stop()
                    if start_highlight_timer:
                        self.highlight_timer.start()
                    else:
                        self.highlight_matches()
            else:
                self.clear_matches()

            number_matches = self.editor.get_number_matches(text, case=case,
                                                            regexp=regexp)
            if hasattr(self.editor, 'get_match_number'):
                match_number = self.editor.get_match_number(text, case=case,
                                                            regexp=regexp)
            else:
                match_number = 0
            self.change_number_matches(current_match=match_number,
                                       total_matches=number_matches)
            return found