From mboxrd@z Thu Jan  1 00:00:00 1970
Subject: Re: [9fans] awk, not utf aware...
From: Steven Vormwald <sdvormwa@mtu.edu>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
In-Reply-To: <FD14802E-AB9F-4C48-9DD0-B085346E33DA@mac.com>
References: <62de1c2c6c8cd64152312915825615eb@plan9.bell-labs.com>
	<FD14802E-AB9F-4C48-9DD0-B085346E33DA@mac.com>
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Date: Tue, 26 Feb 2008 16:32:52 -0500
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On Tue, 2008-02-26 at 16:21 -0500, Pietro Gagliardi wrote:
> And it's wonderful that the C standard defines a character literal as
> so:
>
> 	char-literal:
> 		' characters '
> 	characters:
> 		character
> 		characters character
>
> (or something like that)
>
> Question, then: why do we need wchar_t/Rune?

The definitions are (<> used to indicate non-terminals in the
grammar...):

(6.4.4.4) character-constant:
	' <c-char-sequence> '
	L' <c-char-sequence> '

(6.4.4.4) c-char-sequence:
	<c-char>
	<c-char-sequence> <c-char>

(6.4.4.4) c-char:
	any member of the source character set except the single-quote ',
backslash \, or new-line character

	<escape-sequence>

Steven Vormwald
sdvormwa@mtu.edu