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Re: Can't M-x compile-defun `edebug' because dynamic variables are false
From: |
Stefan Monnier |
Subject: |
Re: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical. |
Date: |
Thu, 13 Feb 2020 17:09:46 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
> But I'm afraid I don't know what a permanent versus
> temporary special variable is.
> And I haven't found
> anything in the doc that has helped me with that.
It's the term used in the part that describes `defvar`:
Note that specifying a value, even @code{nil}, marks the variable as
special permanently. Whereas if @var{value} is omitted then the
variable is only marked special locally (i.e.@: within the current
lexical scope, or file if at the top-level). This can be useful for
suppressing byte compilation warnings, see @ref{Compiler Errors}.
> AFAIK, in Common Lisp a variable is either special
> or it's not. If it is then its binding by `let'
> is dynamic, and if it's not then its let-binding
> is lexical. (No?)
Same for us.
Does Common Lisp offer something like `special-variable-p`?
Stefan
- RE: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Drew Adams, 2020/02/13
- Re: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Stefan Monnier, 2020/02/13
- RE: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Drew Adams, 2020/02/13
- Re: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical.,
Stefan Monnier <=
- RE: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Drew Adams, 2020/02/13
- Re: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Stefan Monnier, 2020/02/13
- RE: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Drew Adams, 2020/02/14
- Re: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Stefan Monnier, 2020/02/14
- RE: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Drew Adams, 2020/02/17
- Re: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Stefan Monnier, 2020/02/13
- RE: Can't M-x compile-defun `edebug' because dynamic variables are falsely taken as lexical., Drew Adams, 2020/02/13