Re: [PATCH 4/4] _AC_OUTPUT_FILES_PREPARE: Rephrase CONFIG_FILES test

[Eric Blake]

On 04/09/2015 06:43 AM, Bernhard Reutner-Fischer wrote:
> 2015-04-08  Bernhard Reutner-Fischer  <address@hidden>
> 
>       * lib/autoconf/status.m4 (_AC_OUTPUT_FILES_PREPARE): Rephrase
>       test for empty CONFIG_FILES.
> 
> Signed-off-by: Bernhard Reutner-Fischer <address@hidden>
> ---
>  lib/autoconf/status.m4 |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/autoconf/status.m4 b/lib/autoconf/status.m4
> index 7ccc847..6a00739 100644
> --- a/lib/autoconf/status.m4
> +++ b/lib/autoconf/status.m4
> @@ -327,7 +327,7 @@ m4_define([_AC_OUTPUT_FILES_PREPARE],
>  [# Set up the scripts for CONFIG_FILES section.
>  # No need to generate them if there are no CONFIG_FILES.
>  # This happens for instance with `./config.status config.h'.
> -if test -n "$CONFIG_FILES"; then
> +if [[ ${CONFIG_FILES:+y} ]]; then

Why the ${a:+b} form here, but the ${a+b} form in patch 1?


-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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