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Re: pcase and minus-sign

From: Andreas Röhler
Subject: Re: pcase and minus-sign
Date: Mon, 5 Dec 2016 10:11:21 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Icedove/45.4.0

On 03.12.2016 16:43, Stefan Monnier wrote:
Must confess some hardship of understanding. If an expression may evaluate
to a certain value or not, that depends resp. may depend on the state at
No: whether it *will* evaluate to that value depends on the state at
run-time.  But whether it *can* evaluate to it doesn't.


At any case permits a much nicer implementation of complement-char than done via plain cond, thanks.

(defun general-close--return-complement-char-maybe (erg)
  "For example return \"}\" for \"{\" but keep \"\\\"\". "
  (pcase erg
    (34 ?\")
    (?' ?')
    (?\( ?\))
    (?\) ?\()
    (?\] ?\[)
    (?\[ ?\])
    (?} ?{)
    (?{ ?})))

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