GNU bug report logs - #70137
30.0.50; pp-macroexpand-last-sexp buffers should turn lexical binding on

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#70137: closed (30.0.50; pp-macroexpand-last-sexp buffers
 should turn lexical binding on)
Date: Wed, 17 Apr 2024 21:07:01 +0000

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Your message dated Wed, 17 Apr 2024 17:03:08 -0400
with message-id <jwvedb3zoqt.fsf-monnier+emacs <at> gnu.org>
and subject line Re: bug#70137: 30.0.50; pp-macroexpand-last-sexp buffers should turn lexical binding on
has caused the debbugs.gnu.org bug report #70137,
regarding 30.0.50; pp-macroexpand-last-sexp buffers should turn lexical binding on
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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70137: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=70137
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From: Augusto Stoffel <arstoffel <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; pp-macroexpand-last-sexp buffers should turn lexical
 binding on
Date: Tue, 02 Apr 2024 08:01:18 +0200

If you call pp-macroexpand-last-sexp in a buffer with lexical binding,
the resulting *Pp Macroexpand Output* buffer has lexical binding turned
off.

The problem with this is that if you now go the *Pp Macroexpand Output*
buffer and call pp-macroexpand-last-sexp again, this second macro
expansion step may not reflect what would happen in the original buffer;
I don't recall an example, but some macros expand differently in the two
variable scoping modes.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Augusto Stoffel <arstoffel <at> gmail.com>
Cc: 70137-done <at> debbugs.gnu.org
Subject: Re: bug#70137: 30.0.50; pp-macroexpand-last-sexp buffers should
 turn lexical binding on
Date: Wed, 17 Apr 2024 17:03:08 -0400

Thanks, pushed to `master`, closing,


        Stefan

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