bug#31559: 26.1; Debugger and ERT backtraces are not abbreviated

[Noam Postavsky]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Noam Postavsky <npostavs@gmail.com>
>> Date: Tue, 22 May 2018 19:52:40 -0400
>> Cc: 31559@debbugs.gnu.org
>> 
>> > Here is a patch that makes cl-prin1 behave like prin1 with respect to
>> > print-level and print-length, except for hash tables (because prin1
>> > prints hash table items and cl-prin1 doesn't, although maybe it
>> > should).
>> 
>> Looks good to me, unfortunately it's probably a bit too late for 26.1
>> though.
>
> Yes, unfortunately.

But I'd say it's worth backporting to 26.2.