Re: insert-file-contents disables undo

[martin rudalics]

>>Thanks for finding that!  I don't immediately see the reason for the bug
>>in `insert-file-contents'; that function's handling of the undo list is
>>a huge festering pile of hair...
>
> Hmm... but isn't that pile of hair the immediate reason for the bug?

The immediate reason is that I forgot that record_insert would collapse
the insertion done by `insert-file-contents' with other insertions.
AFAICT Andreas fixed that and also the mindless one-armed `if' I wrote.
Thanks, Andreas!

Anyway, the pile of hair is rooted deep inside `insert-file-contents'
which tries to reconcile format decoding, `after-insert-file-functions',
keeping the undo-list short and `point' where it was, and whatever have
you.  `insert-file-contents' presently has about 1200 lines of code,
that's clearly too much for my brain.

martin