t/common: set $0 when running script w/o fork

We can localize changes to $0 so $0 is restored when the
"script" sub is done.  This will be helpful when we encounter
a stuck/slow processes during our tests (hopefully never!)

diff --git a/t/common.perl b/t/common.perl
index 0ff5de4a7161d97bd1ad6b8df715084ce6c3c7d6..288a0a1928b6c62f34aa1c15f37f023f6508c0fc 100644 (file)
--- a/t/common.perl
+++ b/t/common.perl
@@ -171,6 +171,7 @@ sub run_script ($;$$) {
                local *STDERR = *STDERR;
                local %ENV = $env ? (%ENV, %$env) : %ENV;
                local %SIG = %SIG;
+               local $0 = join(' ', @$cmd);
                _prepare_redirects($fhref);
                _run_sub($sub, $key, \@argv);
        }