Re: master 098add06eb7: Say whether we're using X11 double buffering

[Po Lu]

Robert Pluim <rpluim@gmail.com> writes:

> branch: master
> commit 098add06eb7d742ff0e6ee0e294931a93a60c71c
> Author: Robert Pluim <rpluim@gmail.com>
> Commit: Robert Pluim <rpluim@gmail.com>
>
>     Say whether we're using X11 double buffering
>     
>     * configure.ac (EMACS_CONFIG_FEATURES): Output value of HAVE_XDBE.
> ---
>  configure.ac | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/configure.ac b/configure.ac
> index c44165fb5c1..e1fcf1254df 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -6637,6 +6637,7 @@ AC_DEFINE_UNQUOTED([EMACS_CONFIG_FEATURES], 
> ["${emacs_config_features}"],
>    [Summary of some of the main features enabled by configure.])
>  
>  AS_ECHO(["  Does Emacs use -lXaw3d?                                 
> ${HAVE_XAW3D}
> +  Does Emacs use X11 double buffering?                    ${HAVE_XDBE}
>    Does Emacs use -lXpm?                                   ${HAVE_XPM}
>    Does Emacs use -ljpeg?                                  ${HAVE_JPEG}
>    Does Emacs use -ltiff?                                  ${HAVE_TIFF}

Please write:

  ``Does Emacs use the X Double Buffer Extension''

instead.  There are many different ways to perform double buffering on
X: the Multi-Buffer extension is one, and the Present extension is
another.