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bug#39823: 26.3; update-directory-autoloads regression from Emacs 26 to
From: |
Maxim Cournoyer |
Subject: |
bug#39823: 26.3; update-directory-autoloads regression from Emacs 26 to Emacs 27 |
Date: |
Mon, 16 Mar 2020 22:16:04 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Hello,
Richard Stallman <rms@gnu.org> writes:
> [[[ To any NSA and FBI agents reading my email: please consider ]]]
> [[[ whether defending the US Constitution against all enemies, ]]]
> [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
>
> Is there any real use for lexical scoping in --eval?
> I suggest reverting the default for --eval to dynamic.
> We could introduce --evallex to specify lexical scoping
> and ask people to tell us if they find it useful.
Not a bad suggestion, but I actually embrace the change to lexical mode
everywhere (I find it more forward looking, and like that it is
consistently the default everywhere). I believe the reason for this bug
report is two-fold:
1) I wasn't aware of the change to --eval (my bad -- I don't follow
Emacs development very closely).
2) The API of some older code (such as the `update-directory-autoloads'
procedure from the autoload library, as I found out) requires the use of
dynamic evaluation for its API to function.
Now that I know about 1), it's rather easy to work around 2). And I'd
guess that with Elisp finally preferring lexical scope by default, 2)
will tend to disappear over time.
Maxim