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bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding
From: |
Michael Heerdegen |
Subject: |
bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions") |
Date: |
Mon, 12 Jul 2021 05:56:50 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Lars Ingebrigtsen <larsi@gnus.org> writes:
> But I don't know whether -unload-function has the same problems that
> -unload-hook had?
At least now (docstring of `unload-feature'):
| If a function `FEATURE-unload-function' is defined, this function
| calls it with no arguments, before doing anything else. That function
| can do whatever is appropriate to undo the loading of the library. If
| `FEATURE-unload-function' returns non-nil, that suppresses the
| standard unloading of the library. Otherwise the standard unloading
| proceeds.
So it can now be controlled whether standard unloading stuff will still
be performed (last problem mentioned in my report -> solved).
This questionable paragraph is sill in the manual however:
• If loading the file adds functions to hooks, define a function
‘FEATURE-unload-function’, where FEATURE is the name of the feature
the package provides, and make it undo any such changes. Using
‘unload-feature’ to unload the file will run this function. *Note
Unloading::.
I guess it is a bit outdated and this had been automated long ago,
although partially heuristically. Instead it could say what typical
non-standard changes need to be handled in an unload-function. It is
unrealistic that every author cares about implementing a non-heuristic
version of the automatic unloading code.
Or, say shortly what unloading actually already does of its own, and
that the library developer should care about the rest.
Thanks,
Michael.
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Lars Ingebrigtsen, 2021/07/08
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"),
Michael Heerdegen <=
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Eli Zaretskii, 2021/07/12
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Lars Ingebrigtsen, 2021/07/12
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Michael Heerdegen, 2021/07/15
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Lars Ingebrigtsen, 2021/07/16
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Michael Heerdegen, 2021/07/16
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Michael Heerdegen, 2021/07/16
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Lars Ingebrigtsen, 2021/07/17
- bug#21440: 25.0.50; Manual: FEATURE-unload-hook in (info "(elisp) Coding Conventions"), Michael Heerdegen, 2021/07/20