Re: [Trent W. Buck] Segfault: emacs -batch -Q -eval '(format-mode-line mode-line-format)'

[Jason Rumney]

Richard Stallman wrote:
> [I sent this message a few weeks ago but did not get a response.
> Could we get the discussion moving again?]
>
> Would someone please fix this then ack?
>   
Fixed by making format-mode-line ignore the format specifier and return
an empty string in noninteractive mode.

The problem was due to parts of the frame object not being initialized,
because init_display is not called in noninteractive mode.  I don't know
if this underlying problem will cause similar crashes elsewhere.