From: Kevin Rodgers <kevin.d.rodgers@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: variable's documentation string
Date: Tue, 30 Jun 2009 00:22:34 -0600 [thread overview]
Message-ID: <h2cav2$174$1@ger.gmane.org> (raw)
In-Reply-To: <0a97f5cb-d434-4014-ba0b-dd5126095fbf@f10g2000vbf.googlegroups.com>
TheFlyingDutchman wrote:
>> Here, it works well:
>>
>> (defvar myVar 2 "This is the documentation string") ; C-x C-e
>> (documentation-property 'myVar 'variable-documentation) ; C-x C-e
>> --> "This is the documentation string"
>
>
> Thanks Pascal! You lead me to the error. When I typed (documentation-
> property 'some_variable 'variable-documentation) and evaluated it, it
> worked. I then compared it to the equivalent part of the message
> statement that I was using, and after 15 seconds of looking at it I
> realized that I had incorrectly used a dash, instead of an underscore
> for the variable name in the documentation-property function call. I
> will have to remember to post the exact code I am using and not type
> in something equivalent. But I would have expected to have gotten an
> error because the symbol-name that I erroneously typed did not exist.
> In fact, I would prefer it gave an error to returning nil.
That's not the way Lisp works. When the form 'some_variable was read,
the symbol was created (with a void value, void function, and nil
property list).
If you evaluate (symbol-value 'some_variable) or (symbol-function
'some_variable), you'll get an error. But not (symbol-plist
'some_variable).
--
Kevin Rodgers
Denver, Colorado, USA
next prev parent reply other threads:[~2009-06-30 6:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-29 7:24 variable's documentation string TheFlyingDutchman
2009-06-29 7:25 ` TheFlyingDutchman
2009-06-29 9:24 ` Pascal J. Bourguignon
2009-06-29 22:47 ` TheFlyingDutchman
2009-06-30 6:22 ` Kevin Rodgers [this message]
2009-06-30 8:47 ` Pascal J. Bourguignon
2009-06-30 20:33 ` TheFlyingDutchman
2009-06-30 21:37 ` Pascal J. Bourguignon
[not found] ` <mailman.1557.1246352126.2239.help-gnu-emacs@gnu.org>
2009-06-30 20:30 ` TheFlyingDutchman
2009-06-30 20:44 ` Pascal J. Bourguignon
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