Re: show a single message in a huge thread

[David Bremner <david@tethera.net>]

David Bremner <david@tethera.net> writes:

> Alan Schmitt <alan.schmitt@polytechnique.org> writes:
>
>> Hello,
>>
>> On 2021-06-01 15:33, David Bremner <david@tethera.net> writes:
>>
>>>> Is this a bug of notmuch-emacs? Is there a way to display a single
>>>> message independently of its context?
>>>>
>>>
>>> I'm not sure what the best UI is, but here is a start:
>>>
>>> (defun notmuch-show-single-message (query)
>>>   (interactive "sQuery: ")
>>>   (message query)
>>>   (let ((notmuch-show-indent-messages-width 0)
>>>         (notmuch-show-only-matching-messages t))
>>>     (notmuch-show query)))
>>
>> Thank you for the suggestion, unfortunately I get a very similar error.
>> I found the id of the message I want, and when I run this function, I
>> get this backtrace.
>>
>
> The code I posted worked fine for me for one message from a thread of
> 323 messages. It could be a I need a really giant thread to test, or
> perhaps the structure of the individual messages matters also. The long
> threads I have are from Debian mailing lists, so the message structure
> tests to be be mainly one part of plain text.

I played with this some more, and I think I understand what the issue
is, although I still cannot duplicate the crash.  By unless given the
"--part" option the CLI returns the whole thread structure, even if it
does not populate it. So there is a big tree of empty lists, and
recursively traversing this tree is what is crashing.  In principle
passing "--part=0" to the CLI should turn off this behaviour, but I
don't know how much needs to be changed on the emacs side to display the
result properly.