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From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: "Stephen J. Turnbull" <stephen@xemacs.org>
Cc: Juri Linkov <juri@jurta.org>, Emacs Dev <emacs-devel@gnu.org>,
	Nix <nix@esperi.org.uk>, martin rudalics <rudalics@gmx.at>,
	PJ Weisberg <pjweisberg@gmail.com>, Alin Soare <as1789@gmail.com>
Subject: Re: Tabs are ready? -> Let us give a definition of tabs.
Date: Mon, 13 Feb 2012 08:24:33 -0500	[thread overview]
Message-ID: <jwvaa4mzxcj.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87vcnbe07s.fsf@uwakimon.sk.tsukuba.ac.jp> (Stephen J. Turnbull's message of "Mon, 13 Feb 2012 15:06:31 +0900")

>> (The problem is simple: if a buffer and its frame *both* declare a
>> variable to be 'local', which takes precedence? There is probably
>> code that depends on *each* taking precedence, so any answer will
>> be wrong.)
> I've not seen complaints about this in re: XEmacs specifiers where the

Indeed, the problem is not one of precedence.  It's one of implementing
it efficiently and still make it work right (after defining what "right"
means) in the presence of let-bindings.  Compound this with the fact
that such combinations are virtually never used (and hence never
tested/debugged) and you'll see that it's both a painful problem to
solve and one that comes with no reward.

Specifiers are easier because they don't have to interact with
let-binding (and since their code path is separate from the one of
variables, they don't need to be particularly efficient, so I guess
they can/could provide let-style rebinding with less pain).


        Stefan



  parent reply	other threads:[~2012-02-13 13:24 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-04 22:36 Tabs are ready? -> Let us give a definition of tabs Alin Soare
2012-02-05 10:42 ` martin rudalics
2012-02-05 12:44   ` Alin Soare
2012-02-05 13:17     ` martin rudalics
2012-02-05 13:39       ` Alin Soare
     [not found]         ` <CA+Xtq3U5PkH=m1ZRMMm2LJQ_BHZXc08Vk4TbhNyyFLta+1EkBw@mail.gmail.com>
2012-02-05 13:44           ` Fwd: " Alin Soare
2012-02-05 14:50             ` Alin Soare
2012-02-05 17:56               ` Andy Moreton
2012-02-05 18:51                 ` Drew Adams
2012-02-06  3:35                   ` Stephen J. Turnbull
2012-02-05 18:16               ` martin rudalics
2012-02-05 21:33                 ` Alin Soare
2012-02-06 10:35                   ` martin rudalics
2012-02-06 13:21                     ` Alin Soare
2012-02-05 23:56                 ` Alin Soare
2012-02-06 10:36                   ` martin rudalics
2012-02-06 13:34                     ` Alin Soare
2012-02-06 14:46                       ` Stephen J. Turnbull
2012-02-06 16:18                         ` Alin Soare
2012-02-06 16:21                           ` Alin Soare
2012-02-06 17:53                           ` Stephen J. Turnbull
2012-02-06 22:51                             ` Alin Soare
2012-02-06 22:55                               ` Alin Soare
2012-02-07 16:15                               ` Stephen J. Turnbull
2012-02-09 15:55                               ` PJ Weisberg
2012-02-09 16:11                                 ` Alin Soare
2012-02-09 16:16                                   ` Alin Soare
2012-02-10 19:04                                     ` Alin Soare
2012-02-10 19:08                                       ` Alin Soare
2012-02-11 14:16                                     ` Nix
2012-02-11 14:41                                       ` Alin Soare
2012-02-12 13:40                                         ` Nix
2012-02-12 16:23                                           ` Alin Soare
2012-02-12 18:48                                             ` Alin Soare
2012-02-13  6:06                                       ` Stephen J. Turnbull
2012-02-13 12:29                                         ` Nix
2012-02-13 15:53                                           ` Tom Tromey
2012-02-13 16:21                                             ` Nix
2012-02-13 16:30                                               ` Tom Tromey
2012-02-13 18:50                                                 ` Nix
2012-02-15 20:35                                                   ` Tom Tromey
2012-02-15 22:59                                                     ` Stefan Monnier
2012-02-15 23:03                                                     ` Nix
2012-02-28 15:13                                                       ` Alin Soare
2012-02-28 15:16                                                         ` Alin Soare
2012-02-13 13:24                                         ` Stefan Monnier [this message]
2012-02-13 13:49                                           ` Nix
2012-02-13 15:20                                             ` Stefan Monnier
2012-02-13 16:21                                               ` Nix
2012-02-06 18:00                         ` martin rudalics
2012-02-06 17:05                       ` martin rudalics
2012-02-05 18:15         ` martin rudalics
2012-02-05 21:38           ` Alin Soare
2012-02-05 22:30             ` joakim
2012-02-05 22:53               ` Alin Soare
2012-02-06 10:35             ` martin rudalics
2012-02-06 13:25               ` Alin Soare
2012-02-06 17:03                 ` martin rudalics
2012-02-06 19:19                   ` Nix
2012-02-06 19:43                     ` martin rudalics
2012-02-06 19:45                       ` Nix
2012-02-06 19:54                       ` Drew Adams
2012-02-08 23:43                         ` Alin Soare
2012-02-09 11:19                           ` Nix
2012-02-09 13:05                             ` Alin Soare
2012-02-09 13:07                               ` Alin Soare
2012-02-07 15:57                     ` Stephen J. Turnbull
2012-02-07 17:15                       ` Nix
2012-02-06 20:05                   ` Alin Soare
2012-02-07 16:03                     ` Stephen J. Turnbull
2012-02-06 17:04                 ` martin rudalics

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