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bug#28254: 26.0.50; SRFI-2 and-let*
From: |
Michael Heerdegen |
Subject: |
bug#28254: 26.0.50; SRFI-2 and-let* |
Date: |
Wed, 13 Sep 2017 12:16:48 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) |
Mark Oteiza <mvoteiza@udel.edu> writes:
> > In `internal--listify':
> > isn't (or (listp form) (atom form)) always true?
>
> Yes, that could instead be (or form (null form)). It's meant to catch
> things like this:
>
> (should (equal nil (and-let* ((nil) (x 1)))))
Why can't we just replace it with the equivalent `t' (and simplify the
code accordingly)?
> > Secondly, in `internal--build-binding-value-form':
> > How can it happen that (car binding) is an atom but not symbolp? And if
> > (car binding) == var is not a symbol, how does the returned binding make
> > sense?
>
> It's an expression, like a number.
>
> (should (equal 1 (and-let* ((2) (x 1)))))
AFAICT, this doesn't run the code I mention. If I trace
`internal--build-binding-value-form' and try this, I get
1 -> (internal--build-binding-value-form (#:s nil) t)
1 <- internal--build-binding-value-form: (#:s (and t nil))
======================================================================
1 -> (internal--build-binding-value-form (x 1) #:s)
1 <- internal--build-binding-value-form: (x (and #:s 1))
In both cases, (car binding) evals to a symbol.
Thanks,
Michael.
- bug#28254: 26.0.50; SRFI-2 and-let*, (continued)
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/03
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/04
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/08
- bug#28254: 26.0.50; SRFI-2 and-let*, Michael Heerdegen, 2017/09/12
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/12
- bug#28254: 26.0.50; SRFI-2 and-let*, Michael Heerdegen, 2017/09/12
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/12
- bug#28254: 26.0.50; SRFI-2 and-let*,
Michael Heerdegen <=
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/13
- bug#28254: 26.0.50; SRFI-2 and-let*, Michael Heerdegen, 2017/09/13
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/13
- bug#28254: 26.0.50; SRFI-2 and-let*, Michael Heerdegen, 2017/09/13
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/13
- bug#28254: 26.0.50; SRFI-2 and-let*, Michael Heerdegen, 2017/09/13
- bug#28254: 26.0.50; SRFI-2 and-let*, Michael Heerdegen, 2017/09/12
- bug#28254: 26.0.50; SRFI-2 and-let*, Mark Oteiza, 2017/09/12