bug#11218: with-demoted-errors use of condition-case-unless-debug; ert

[Stefan Monnier]

>>>>> If you replace with-demoted-errors with ignore-errors, the test passes.
>>>> Looks like a bug in ERT.
>>> I don't know if it's a "bug" per se...
>>> ert--run-test-internal binds debug-on-error to t, and redefines the
>>> debugger to ert--run-test-debugger. As the doc of that function says:
>> I wonder why ERT doesn't just use condition-case to catch and record
>> the errors.
> Two reasons that I remember off the top of my head: Recording backtraces,
> and recording additional information provided with `ert-info'.

So the next question is: why does ERT record a backtrace and that extra
information provided by ert-info?


        Stefan