From: Stephen Berman <stephen.berman@gmx.net>
To: Noam Postavsky <npostavs@users.sourceforge.net>
Cc: Michael Heerdegen <michael_heerdegen@web.de>,
Tino Calancha <f92capac@gmail.com>,
23781@debbugs.gnu.org
Subject: bug#23781: 25.0.95; read-string with HIST lexically bound
Date: Sat, 25 Jun 2016 20:53:34 +0200 [thread overview]
Message-ID: <8737o1w15d.fsf@gmx.net> (raw)
In-Reply-To: <CAM-tV--mkNNno6Vu+3Lassyqy0vEYtodxwErWLAoX0XeGZ0eRQ@mail.gmail.com> (Noam Postavsky's message of "Sat, 25 Jun 2016 12:53:18 -0400")
On Sat, 25 Jun 2016 12:53:18 -0400 Noam Postavsky <npostavs@users.sourceforge.net> wrote:
> On Sat, Jun 25, 2016 at 6:12 AM, Stephen Berman <stephen.berman@gmx.net> wrote:
>> On Fri, 24 Jun 2016 20:26:45 -0400 Noam Postavsky
>> <npostavs@users.sourceforge.net> wrote:
>>
>>> On Thu, Jun 23, 2016 at 7:18 PM, Drew Adams <drew.adams@oracle.com> wrote:
>>>>> I think we should be a little more specific, not
>>>>> just give examples, something like:
>>>>>
>>>>> Note that functions which take a symbol argument (like
>>>>> ‘symbol-value’, ‘boundp’, and ‘set’) can only retrieve or modify a
>>>>> variable’s dynamic binding (i.e., the contents of its symbol’s
>>>>> value cell).
>>>>
>>>> Be even more specific: A Lisp symbol is a dynamic thing.
>>>> It is an object. Lexical binding has nothing to do with symbols.
>>>> A given _name_ in code can sometimes be lexically bound.
>>>
>>> Hmm, this threatens to get a little philosophical, but that seems to
>>> contradict earlier text in the same node:
>>>
>>> Here is how lexical binding works. Each binding construct
>>> defines a “lexical environment”, specifying the symbols that are
>>> bound within the construct and their local values.
>>
>> I think it's more a question of definition than philosophy: AFAIU using
>> the word "symbols" here is strictly speaking incorrect; it should be
>> "variables".
>
> Yes, perhaps the implementation details leaked a bit too much into the
> description. I think it remains the case that the name of a variable
> is a symbol (as opposed to a string) though.
Well, the info node `(elisp) Variables' says:
In Lisp, each variable is represented by a Lisp symbol (see
Symbols::). The variable name is simply the symbol’s name [...]
and a symbol's name is a string (according to `symbol-name'). But maybe
we should leave the bike shed before this gets too philosophical ;-)
Steve Berman
next prev parent reply other threads:[~2016-06-25 18:53 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 5:19 bug#23781: 25.0.95; read-string with HIST lexically bound Tino Calancha
2016-06-17 15:25 ` Michael Heerdegen
2016-06-23 23:01 ` Noam Postavsky
2016-06-23 23:18 ` Drew Adams
2016-06-25 0:26 ` Noam Postavsky
2016-06-25 10:12 ` Stephen Berman
2016-06-25 16:53 ` Noam Postavsky
2016-06-25 18:53 ` Stephen Berman [this message]
2016-06-25 19:46 ` Noam Postavsky
2016-06-25 22:07 ` Stephen Berman
2016-06-25 23:42 ` Michael Heerdegen
2016-06-26 3:34 ` Noam Postavsky
2016-06-27 0:55 ` Noam Postavsky
2016-07-01 4:07 ` npostavs
2016-06-26 2:23 ` Drew Adams
2016-06-25 21:00 ` Drew Adams
2016-06-25 20:42 ` Drew Adams
2016-06-24 2:24 ` Tino Calancha
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