[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#26624: 26.0.50; Generalized variable `buffer-local-value' does't res
From: |
Michael Heerdegen |
Subject: |
bug#26624: 26.0.50; Generalized variable `buffer-local-value' does't restore local flag |
Date: |
Wed, 24 Jan 2018 15:33:38 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Philipp Stephani <p.stephani2@gmail.com> writes:
> Thanks for this great analysis. Given this, it seems that the place
> definition for `buffer-local-value' should be removed from gv.el.
But hmm - surely there are other functions where `cl-letf' doesn't
exactly restore the previous state - `alist-get', for example:
#+begin_src emacs-lisp
(setq my-alist '((x . 1)))
(ignore (cl-letf (((alist-get 'y my-alist) 17)) my-alist))
my-alist
==> ((y) (x . 1))
#+end_src
(admittedly, this is not as serious as the `buffer-local-value' case).
Also, as another, different problematic case, the manual warns about
`point' to be used with `cl-letf'.
So, I wonder if, instead of removing the gv-setter definition for
`buffer-local-value', we should instead add some more text about how
`cl-letf' can have surprising effects to the manual.
Michael.
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- bug#26624: 26.0.50; Generalized variable `buffer-local-value' does't restore local flag,
Michael Heerdegen <=