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bug#63881: 29.0.91; apropos-documentation fails when load-history contai
From: |
Visuwesh |
Subject: |
bug#63881: 29.0.91; apropos-documentation fails when load-history contains element whose CAR is nil |
Date: |
Sun, 04 Jun 2023 14:04:06 +0530 |
User-agent: |
K-9 Mail for Android |
On 4 June 2023 11:01:58 GMT+05:30, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Visuwesh <visuweshm@gmail.com>
>> Date: Sun, 04 Jun 2023 08:37:08 +0530
>>
>>
>> As per (info "(elisp) Where Defined"), load-history may contain an
>> element whose CAR is nil if eval-buffer was used to evaluate a defun
>> in a non-file-visiting buffer.
>>
>> After such an entry is added to load-history, apropos-documentation
>> fails with the backtrace at end.
>
>How did you add such an entry to load-history? IOW, is there a
>real-life use case where this happens?
eval-buffer is the answer apparently. I don't remember using the command
explicitly myself though so some other eval command is calling it.
Also see the reproducer below.
>> To reproduce the issue,
>>
>> 1. emacs -Q
>> 2. Insert (defun test () t)
>> 3. M-x eval-buffer RET
>> 4. Confirm that a nil entry is present in load-history by evaluating
>> (alist-get nil load-history 'none)
>> 5. C-h d any RET