yes: fix copy and paste issue with previous commit

* src/yes.c (main): Output 'y' not '-'.
* tests/misc/yes.sh: Add a test for default output.

2 files changed, 4 insertions, 1 deletions

diff --git a/src/yes.c b/src/yes.c
index e127310f1..a3b25ce08 100644
--- a/src/yes.c
+++ b/src/yes.c
@@ -76,7 +76,7 @@ main (int argc, char **argv)
 
   char **operand_lim = argv + argc;
   if (optind == argc)
-    *operand_lim++ = bad_cast ("-");
+    *operand_lim++ = bad_cast ("y");
 
   /* Buffer data locally once, rather than having the
      large overhead of stdio buffering each item.  */
diff --git a/tests/misc/yes.sh b/tests/misc/yes.sh
index a3027432b..c8ef65a7f 100755
--- a/tests/misc/yes.sh
+++ b/tests/misc/yes.sh
@@ -19,6 +19,9 @@
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
 print_ver_ yes
 
+# Check basic operation
+test "$(yes | head -n1)" = 'y' || fail=1
+
 # Check various single item sizes, with the most important
 # size being BUFSIZ used for the local buffer to yes(1).
 # Note a \n is added, so actual sizes required internally