[PING][PATCH][BZ #12986] Clarify that scanf does not use character classes.

[OndÅej BÃlka <neleai at seznam dot cz>]

ping
On Tue, Nov 05, 2013 at 03:14:47PM +0100, OndÅej BÃlka wrote:
> On Fri, Oct 25, 2013 at 02:15:09PM -0700, Roland McGrath wrote:
> > > 	[BZ #12986]
> > > 	* manual/stdio.texi: Clarify documentation.
> > 
> > Such a vague log entry is wholly inadequate.  Log entries for Texinfo
> > files should cite the node in the same way log entries for C files
> > cite the function.  That alone is still insufficiently specific.
> > Say what you're clarifying.
> > 
> > > diff --git a/manual/stdio.texi b/manual/stdio.texi
> > > index 30630ca..1be5fd9 100644
> > > --- a/manual/stdio.texi
> > > +++ b/manual/stdio.texi
> > > @@ -3671,8 +3671,8 @@ of the width or precision by @code{MB_CUR_MAX}.
> > >  
> > >  To read in characters that belong to an arbitrary set of your choice,
> > >  use the @samp{%[} conversion.  You specify the set between the @samp{[}
> > > -character and a following @samp{]} character, using the same syntax used
> > > -in regular expressions.  As special cases:
> > > +character and a following @samp{]} character, using similar syntax an one 
> > > +used in regular expressions.  As special cases:
> > 
> > I'd say, "... using the same syntax used in regular expressions for
> > explicit sets of characters."
> > 
> > > +Note that character classes are not supported.
> > 
> > The term "character class" is not defined anywhere in this manual
> > (unsurprising since it does not document regexp syntax).  You could
> > use a cross-reference to another manual that does document regexp
> > syntax and define the term (there is surely a good node to refer to in
> > the grep manual).  But it's also nice to make it clear without looking
> > up the reference, e.g.
> > 
> > Note that the @dfn{character class} syntax available in character sets
> > that appear inside regular expressions (such as @samp{[:alpha:]}) is
> > @emph{not} available in the @samp{%[} conversion.
> 
> Here is v2.
> 
> 
> 	[BZ #12986]
> 	* manual/stdio.texi (String Input Conversions): Clarify that character
> 	classes are not supported.
> 
> diff --git a/manual/stdio.texi b/manual/stdio.texi
> index 30630ca..7dcacd8 100644
> --- a/manual/stdio.texi
> +++ b/manual/stdio.texi
> @@ -3672,7 +3672,7 @@ of the width or precision by @code{MB_CUR_MAX}.
>  To read in characters that belong to an arbitrary set of your choice,
>  use the @samp{%[} conversion.  You specify the set between the @samp{[}
>  character and a following @samp{]} character, using the same syntax used
> -in regular expressions.  As special cases:
> +in regular expressions for explicit sets of characters.  As special cases:
>  
>  @itemize @bullet
>  @item
> @@ -3692,6 +3692,10 @@ the characters listed.
>  The @samp{%[} conversion does not skip over initial whitespace
>  characters.
>  
> +Note that the @dfn{character class} syntax available in character sets
> +that appear inside regular expressions (such as @samp{[:alpha:]}) is
> +@emph{not} available in the @samp{%[} conversion.
> +
>  Here are some examples of @samp{%[} conversions and what they mean:
>  
>  @table @samp

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