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bug#20139: 25.0.50; eval-buffer ignores lexical-binding
From: |
Stefan Monnier |
Subject: |
bug#20139: 25.0.50; eval-buffer ignores lexical-binding |
Date: |
Wed, 18 Mar 2015 23:10:30 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
> (setq lexical-binding t)
> (message "%s" (lambda () a))
This is wrong. The `setq' above is an expression evaluated at run-time,
whereas what you want to say (that this code is written in the lexical
version of the Elisp language) is something that needs to be known before
evaluation proceeds.
You can do M-: (setq lexical-binding t) from that buffer in order to
tell Emacs that the code in the buffer uses the lexical
version of the Elisp language, or better, you should put a "-*-
lexical-binding:t -*-" at the top of the file.
Stefan
bug#20139: 25.0.50; eval-buffer ignores lexical-binding, Glenn Morris, 2015/03/19