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bug#39274: Warn when using obsolete command interactively
From: |
Stefan Kangas |
Subject: |
bug#39274: Warn when using obsolete command interactively |
Date: |
Sat, 25 Jan 2020 20:22:52 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Stefan Kangas <stefan@marxist.se> writes:
>>> Please add a warning along these lines:
>>>
>>> (message "The `%s' command is obsolete since version %s, use `%s' instead"
>>> obsolete-name version current-name)
>>
>> Where and when will this warning be displayed?
>
> I was thinking of something along the lines of the below patch.
Sorry, that had a typo. See attached instead.
Best regards,
Stefan Kangas
diff --git a/lisp/simple.el b/lisp/simple.el
index 8be27745b1..f1f0da1fed 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -1914,6 +1914,12 @@ execute-extended-command
(while-no-input
(setq binding (execute-extended-command--shorter
(symbol-name function) typed))))
+ (when-let (obsolete (with-temp-buffer
+ (when (help-fns--obsolete function)
+ (buffer-string)
+ (goto-char (point-max))
+ (delete-indentation 2))))
+ (message obsolete))
(when binding
(with-temp-message
(format-message "You can run the command `%s' with %s"