t/test-lib.sh: provide a shell implementation of the 'yes' utility

Some platforms (IRIX 6.5, Solaris 7) do not provide the 'yes' utility.
Currently, some tests, including t7610 and t9001, try to call this program.
Due to the way the tests are structured, the tests still pass even though
this program is missing.  Rather than succeeding by chance, let's provide
an implementation of the simple 'yes' utility in shell for all platforms to
use.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/test-lib.sh b/t/test-lib.sh
index a5b8d03db0fc88c42e38cdde13a6cd2b14c06581..f2ca5364722e9c85a23bdfdcf1e24122fd5e3a0f 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -685,6 +685,21 @@ do
        esac
 done
 
+# Provide an implementation of the 'yes' utility
+yes () {
+       if test $# = 0
+       then
+               y=y
+       else
+               y="$*"
+       fi
+
+       while echo "$y"
+       do
+               :
+       done
+}
+
 # Fix some commands on Windows
 case $(uname -s) in
 *MINGW*)