Subject: bug#28048: 26.0.50; behaviour of C-h f semantic-mode

From: Mark Oteiza <[email-masked]>
Date: Fri, 11 Aug 2017 12:22:00 -0400

Glenn Morris <[email-masked]> writes:

> Mark Oteiza wrote:
>
>> 1. C-f sem TAB
>>
>> For information about GNU Emacs and the GNU system, type C-h C-a.
>> *Warning* default value of <<no-type>> tokens changed to QUERY, was NULL_TOKEN
>> *Warning* default value of <<no-type>> tokens changed to TRUE, was QUERY
>> *Warning* default value of <<no-type>> tokens changed to FALSE, was TRUE
>
> These 3 warnings are https://debbugs.gnu.org/14524
>
>> Shell native completion is disabled, using fallback
>> Quit
>
> Anyway, what exactly is the complaint?
> C-h f now uses the definition-prefixes feature to try and load libraries
> where needed, and loading libraries may do anything.

I suppose the complaint is that "loading" semantic (or whatever happens
to get loaded when trying to get help on the semantic-mode function) is
invoking a python process.  Either some library starts the process when
loaded, or… well I don't know what's going on.

Is there a bug associated with the new C-h f behaviour?  Loading
libraries unexpectedly sounds bad.

Tangentially, the python warning is <https://debbugs.gnu.org/22897>, and
either something got broken again or this never actually got fixed.