[debbugs-tracker] bug#24314: closed (Mistake in GNU Emacs Lisp Reference Manual)

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Your message dated Fri, 26 Aug 2016 22:14:25 +0300
with message-id <address@hidden>
and subject line Re: bug#24314: Mistake in GNU Emacs Lisp Reference Manual
has caused the debbugs.gnu.org bug report #24314,
regarding Mistake in GNU Emacs Lisp Reference Manual
to be marked as done.

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24314: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24314
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> --- Begin Message ---
>
>
>
> Subject: 
>
> Mistake in GNU Emacs Lisp Reference Manual
>
>
>
>
> Date: 
>
> Fri, 26 Aug 2016 14:07:19 -0400
>
>
>
>
> To Whom It May Concern,
>
> I believe I have found a mistake in the GNU Emacs Lisp Reference
> Manual.
>
> In section 4.7, Formatting Strings
> (https://www.gnu.org/software/emacs/manual/html_node/elisp/Formatting-Strings.html#Formatting-Strings)
> it says:
>
>     "The precision is a decimal-point ‘.’ followed by a digit-string...
>     Precision has no effect for other specification characters."
>
> However, running
>
>     (format "%.10d" 23)
>
> produces
>
>     0000000023
>
> which clearly does have an effect (i.e. padding the integer with zeroes
> to the left).
>
> Best regards,
> Eric Wayman
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#24314: Mistake in GNU Emacs Lisp Reference Manual
>
>
>
>
> Date: 
>
> Fri, 26 Aug 2016 22:14:25 +0300
>
>
>
>
> > Date: Fri, 26 Aug 2016 14:07:19 -0400
> > From: Eric Wayman <address@hidden>
> > 
> > In section 4.7, Formatting Strings
> > (https://www.gnu.org/software/emacs/manual/html_node/elisp/Formatting-Strings.html#Formatting-Strings)
> > it says:
> > 
> >     "The precision is a decimal-point ‘.’ followed by a digit-string...
> >     Precision has no effect for other specification characters."
> > 
> > However, running
> > 
> >     (format "%.10d" 23)
> > 
> > produces
> > 
> >     0000000023
> > 
> > which clearly does have an effect (i.e. padding the integer with zeroes
> > to the left).
>
> Thanks.  This is already fixed in the development sources of what
> will become Emacs 25.1.  The manual now says:
>
>      All the specification characters allow an optional “precision” before
>   the character (after the width, if present).  The precision is a
>   decimal-point ‘.’ followed by a digit-string.  For the floating-point
>   specifications (‘%e’, ‘%f’, ‘%g’), the precision specifies how many
>   decimal places to show; if zero, the decimal-point itself is also
>   omitted.  For ‘%s’ and ‘%S’, the precision truncates the string to the
>   given width, so ‘%.3s’ shows only the first three characters of the
>   representation for OBJECT.  For other specification characters, the
>   effect of precision is what the local library functions of the ‘printf’
>   family produce.
>
> (I clarified the last sentence just now.)
>
>
> --- End Message ---