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Re: The poor state of documentation of pcase like things.
From: |
Michael Heerdegen |
Subject: |
Re: The poor state of documentation of pcase like things. |
Date: |
Sun, 20 Dec 2015 13:45:43 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
address@hidden (Phillip Lord) writes:
> (pcase '(:a 1)
(:a 1) is not a map in the sense of map.el. You probably want an alist:
((:a . 1)).
> ((map `(:a ,a)) a))
``' is a different pattern type. You want to use the `map', and
backquote is not part of its syntax. So, this is how the example should
look like:
(pcase '((:a . 1))
((map (:a a)) a))
But the doc is not correct indeed:
@Nicolas: Can you please correct these sentences of the "map" pcase
pattern documentation:
,----------------------------------------------------------------------
| ARGS can be a list of the form (KEY PAT), in which case KEY in an
| unquoted form.
|
| ARGS can also be a list of symbols, which stands for (’SYMBOL
| SYMBOL).
`----------------------------------------------------------------------
It should say that ARGS can be a list of elements of the form (KEY PAT)
^^^^^^^^^^^
(at least that's how I think it is meant. OTOH,
(pcase '((:a . 1) (:b . 2))
((map (:a a :b b)) (list a b)))
gives an error (void variable: b), so I'm not sure)
In the second sentence, our new quoting magic messes the quote character
in the doc shown in the help buffer.
Thanks,
Michael.
- Re: The poor state of documentation of pcase like things., (continued)
- Re: The poor state of documentation of pcase like things., Michael Heerdegen, 2015/12/19
- Re: The poor state of documentation of pcase like things., Eli Zaretskii, 2015/12/19
- Re: The poor state of documentation of pcase like things., Michael Heerdegen, 2015/12/19
- Re: The poor state of documentation of pcase like things., John Wiegley, 2015/12/22
- Re: The poor state of documentation of pcase like things., Phillip Lord, 2015/12/19
- Re: The poor state of documentation of pcase like things., Michael Heerdegen, 2015/12/19
- Re: The poor state of documentation of pcase like things., Phillip Lord, 2015/12/19
- Re: The poor state of documentation of pcase like things.,
Michael Heerdegen <=
- Re: The poor state of documentation of pcase like things., Richard Stallman, 2015/12/24
- Re: The poor state of documentation of pcase like things., John Wiegley, 2015/12/24
- Re: The poor state of documentation of pcase like things., Richard Stallman, 2015/12/25
- Re: The poor state of documentation of pcase like things., Michael Heerdegen, 2015/12/25
- Re: The poor state of documentation of pcase like things., John Wiegley, 2015/12/25
- Re: The poor state of documentation of pcase like things., Richard Stallman, 2015/12/26
- Re: The poor state of documentation of pcase like things., Michael Heerdegen, 2015/12/26
- Re: The poor state of documentation of pcase like things., Aaron Ecay, 2015/12/26
- Re: The poor state of documentation of pcase like things., Michael Heerdegen, 2015/12/26
- Re: The poor state of documentation of pcase like things., Richard Stallman, 2015/12/26