'Update the regex text for the shortcut finder.'

def set_regex(self, regex=None, reset=False):

    if reset:
        text = ''
    else:
        text = self.finder.text().replace('    ', '').lower()
    self.proxy_model.set_filter(text)
    self.source_model.update_search_letters(text)
    self.sortByColumn(SEARCH_SCORE, Qt.AscendingOrder)
    if (self.last_regex != regex):
        self.selectRow(0)
    self.last_regex = regex
