environment/lib/python2.7/site-packages/IPython/frontend/terminal/interactiveshell.py
def _replace_rlhist_multiline(self, source_raw, hlen_before_cell):
        """Store multiple lines as a single entry in history"""

        # do nothing without readline or disabled multiline
        if not self.has_readline or not self.multiline_history:
            return hlen_before_cell

        # windows rl has no remove_history_item
        if not hasattr(self.readline, "remove_history_item"):
            return hlen_before_cell

        # skip empty cells
        if not source_raw.rstrip():
            return hlen_before_cell

        # nothing changed do nothing, e.g. when rl removes consecutive dups
        hlen = self.readline.get_current_history_length()
        if hlen == hlen_before_cell:
            return hlen_before_cell

        for i in range(hlen - hlen_before_cell):
            self.readline.remove_history_item(hlen - i - 1)
        stdin_encoding = get_stream_enc(sys.stdin, 'utf-8')
        self.readline.add_history(py3compat.unicode_to_str(source_raw.rstrip(),
                                    stdin_encoding))
        return self.readline.get_current_history_length()
def _replace_rlhist_multiline(self, source_raw, hlen_before_cell):
        """Store multiple lines as a single entry in history"""

        # do nothing without readline or disabled multiline
        if not self.has_readline or not self.multiline_history:
            return hlen_before_cell

        # windows rl has no remove_history_item
        if not hasattr(self.readline, "remove_history_item"):
            return hlen_before_cell

        # skip empty cells
        if not source_raw.rstrip():
            return hlen_before_cell

        # nothing changed do nothing, e.g. when rl removes consecutive dups
        hlen = self.readline.get_current_history_length()
        if hlen == hlen_before_cell:
            return hlen_before_cell

        for i in range(hlen - hlen_before_cell):
            self.readline.remove_history_item(hlen - i - 1)
        stdin_encoding = get_stream_enc(sys.stdin, 'utf-8')
        self.readline.add_history(py3compat.unicode_to_str(source_raw.rstrip(),
                                    stdin_encoding))
        return self.readline.get_current_history_length()
Store multiple lines as a single entry in history