bug#15661: 24.3.50; calendar.el broken

[Glenn Morris]

Andreas Röhler wrote:

> M-x diary-view-entries RET
>
> fails saying:
>
> Symbol's value as variable is void: displayed-month

Works fine here. Recipe from emacs -Q?

> AFAIU reason is new defvar behavior, which breaks legacy code.

No. Please desist from the usual wide-eyed speculation.

> calendar.el has a
>
> (defvar displayed-month)

Since over 5 years ago.