> On 17. Jul 2019, at 19:57, Mark H Weaver <m...@netris.org> wrote:
>
> Hi Robert,
>
> Robert Vollmert <r...@vllmrt.net> writes:
>
>> * module/system/repl/debug.scm (print-frame): Print full object if
>> width keyword is #f.
>> * libguile/backtrace.c (display_backtrace_body): Call print-frames
>> with #:width #f.
>> ---
>>
>> This change was prompted by recent discussion on the Guix lists:
>> https://lists.gnu.org/archive/html/guix-devel/2019-07/msg00207.html
>> In Guix, the truncation of stack traces frequently obscures
>> important information due to the long filenames.
>
> I'm sympathetic to this problem, but simply disabling the truncated
> printing during backtraces is not workable. It is quite often the case
> that some of the structures printed in backtraces are *huge*, or even
> cyclic.
>
> Have you tried setting the COLUMNS environment variable to a larger
> value? I'd prefer a solution along those lines, where the user can set
> an environment variable to ask for less truncation in backtraces.
Defaulting to something longer than 80 might be workable, say 250?
I don’t think that it should be necessary to set an environment variable
to get usable stack traces…
