bug#81480: 31.0.91; diff-mode-test-* incorrectly assumes "diff -a"

Paul Eggert [24/Jul  1:55pm -07] wrote:
> This follows up on bug#81465 "31.0.91; ‘make check’ failures on Solaris
> 10 sparc 32-bit" and I am splitting this issue off into a separate bug
> report.
>
> Some diff-mode-test-* patches fail because they use ‘diff -a’. The -a
> option is a GNU extension to POSIX and is not supported by Solaris 10 diff.

I don't understand what you mean by saying that they *use* 'diff -a' --
if it's -a that turns on the "No newline at end of file" output, then
the problem has to be that -a is the implicit default behaviour for GNU
diff?  AFAICT we don't explicitly pass -a anywhere.

-- 
Sean Whitton