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From: Kevin Rodgers <kevin.d.rodgers@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Is it possible for a macro to expand to nothing?
Date: Fri, 27 Nov 2009 01:32:35 -0700	[thread overview]
Message-ID: <heo2qj$nq1$1@ger.gmane.org> (raw)
In-Reply-To: <heh27o$oht$1@colin2.muc.de>

Alan Mackenzie wrote:

> Your notion of the correct use of macros seems to be a religious idea
> rather than one fully thought through.  You justify it with circular
> reasoning.  Whilst using a macro to generate an evalable form may be the
> most usual thing, there is no reason not to use it to produce other list
> structure.

Except that such macros can only be executed in a particular context i.e.
they depend on something that cannot be expressed via their argument list.
At best that is poor style, and at worst it is poor engineering.

-- 
Kevin Rodgers
Denver, Colorado, USA





  parent reply	other threads:[~2009-11-27  8:32 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-23 14:56 Is it possible for a macro to expand to nothing? Alan Mackenzie
2009-11-23 16:03 ` Drew Adams
     [not found] ` <mailman.11344.1258992201.2239.help-gnu-emacs@gnu.org>
2009-11-23 16:31   ` Alan Mackenzie
2009-11-23 17:29     ` Drew Adams
2009-11-23 18:33     ` Pascal J. Bourguignon
2009-11-23 18:51       ` Drew Adams
     [not found]       ` <mailman.11354.1259004470.2239.help-gnu-emacs@gnu.org>
2009-11-23 20:08         ` Pascal J. Bourguignon
2009-11-23 20:24           ` Alan Mackenzie
2009-11-23 22:09           ` Drew Adams
     [not found]           ` <mailman.11367.1259014174.2239.help-gnu-emacs@gnu.org>
2009-11-23 23:55             ` Pascal J. Bourguignon
2009-11-24  0:55               ` Alan Mackenzie
2009-11-24  9:42                 ` Pascal J. Bourguignon
2009-11-24 10:45                   ` Alan Mackenzie
2009-11-24 11:14                     ` Pascal J. Bourguignon
2009-11-24 16:39                       ` Alan Mackenzie
2009-11-24 19:17                         ` Pascal J. Bourguignon
2009-11-25 14:13                         ` Jeff Clough
     [not found]                         ` <mailman.11467.1259158369.2239.help-gnu-emacs@gnu.org>
2009-11-26  6:53                           ` Alan Mackenzie
2009-11-26 11:11                             ` Pascal J. Bourguignon
2009-11-26 11:52                               ` Lennart Borgman
     [not found]                               ` <mailman.11564.1259236392.2239.help-gnu-emacs@gnu.org>
2009-11-26 12:16                                 ` Pascal J. Bourguignon
2009-11-26 12:43                                   ` Lennart Borgman
2009-11-27  8:32                         ` Kevin Rodgers [this message]
     [not found]                         ` <mailman.11626.1259310779.2239.help-gnu-emacs@gnu.org>
2009-11-27 13:15                           ` Alan Mackenzie
2009-11-27 13:52                             ` Pascal J. Bourguignon
2009-11-27 16:57                               ` Alan Mackenzie
2009-11-27 17:09                                 ` Pascal J. Bourguignon
2009-11-27 17:19                               ` Helmut Eller
2009-11-27 17:45                                 ` Pascal J. Bourguignon
2009-11-27 23:17                             ` Tim X
2009-11-28  0:06                               ` Pascal J. Bourguignon
2009-11-28  8:29                                 ` Alan Mackenzie
2009-11-28 10:25                                   ` Pascal J. Bourguignon
2009-11-28 12:57                                     ` Thierry Volpiatto
     [not found]                                     ` <mailman.11699.1259413441.2239.help-gnu-emacs@gnu.org>
2009-11-29  0:54                                       ` Pascal J. Bourguignon
2009-11-24 11:56                     ` Pascal J. Bourguignon
     [not found]     ` <mailman.11352.1258997403.2239.help-gnu-emacs@gnu.org>
2009-11-23 18:42       ` Pascal J. Bourguignon
2009-11-23 20:12         ` Drew Adams
     [not found]         ` <mailman.11356.1259007263.2239.help-gnu-emacs@gnu.org>
2009-11-23 20:21           ` Pascal J. Bourguignon
2009-11-23 22:09             ` Drew Adams
     [not found]             ` <mailman.11368.1259014177.2239.help-gnu-emacs@gnu.org>
2009-11-24  0:03               ` Pascal J. Bourguignon
2009-11-23 20:09       ` Alan Mackenzie
2009-11-23 16:49 ` Jeff Clough

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