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

[OndÅej BÃlka <neleai at seznam dot cz>]

ping
On Wed, Nov 13, 2013 at 11:19:48AM +0100, OndÅej BÃlka wrote:
> 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
> 
> -- 
> 
> Bad user karma.