[patch][python][doc] PR 12918 reference decode_line in py SAL docs.

[Eli Zaretskii]

> Date: Sat, 2 Jul 2011 07:20:08 -0700
> From: Matt Rice <ratmice@gmail.com>
> 
> here is an attempt at 12918, along with the original reporter,
> I also had overlooked the decode_line method.
> 
> 2011-07-02  Matt Rice  <ratmice@gmail.com>
> 
>         * gdb.texinfo (Symbol Tables In Python): Add reference to the
>         decode_line function.
> 
> diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
> index dbaf30e..cbfaddd 100644
> --- a/gdb/doc/gdb.texinfo
> +++ b/gdb/doc/gdb.texinfo
> @@ -23258,7 +23258,9 @@ Access to symbol table data maintained by @value{GDBN} on the inferior
>  is exposed to Python via two objects: @code{gdb.Symtab_and_line} and
>  @code{gdb.Symtab}.  Symbol table and line data for a frame is returned
>  from the @code{find_sal} method in @code{gdb.Frame} object.
> -@xref{Frames In Python}.
> +@xref{Frames In Python}.  Symbol table and line data for an arbitrary
> +linespec is returned from the @code{decode_line} function.
> +@xref{Basic Python}.
>  
>  For more information on @value{GDBN}'s symbol table management, see
>  @ref{Symbols, ,Examining the Symbol Table}, for more information.

Thanks, but how does this address the PR?  This is the full text of 
PR 12918:

  There is no (obvious) documented way to get a symtab_and_line object given an
  arbitrary address.  
  A function gdb.sal_for_pc() similar to gdb.block_for_pc() would be nice.

If you want to tell that decode_line is the answer for the PR's
request, then why not update the documentation of decode_line, which
is almost 2000 lines earlier in the manual and in a different node?

IOW, why are you adding this text in this particular place?

Sorry if I'm missing something obvious.