xargs: fix -e default to match newer GNU xargs, add SUS mandated -E.

 closes bug 4414

1 files changed, 12 insertions, 2 deletions

diff --git a/testsuite/xargs.tests b/testsuite/xargs.tests
index e041d592e..36524499e 100755
--- a/testsuite/xargs.tests
+++ b/testsuite/xargs.tests
@@ -6,14 +6,24 @@
 
 # testing "test name" "command" "expected result" "file input" "stdin"
 
-testing "xargs stops on underscore" \
-        "xargs" \
+testing "xargs -E _ stops on underscore" \
+        "xargs -E _" \
         "a\n" \
         "" "a\n_\nb\n"
 
+testing "xargs -E ''" \
+        "xargs -E ''" \
+        "a _ b\n" \
+        "" "a\n_\nb\n"
+
 testing "xargs -e without param" \
         "xargs -e" \
         "a _ b\n" \
         "" "a\n_\nb\n"
 
+testing "xargs does not stop on underscore ('new' GNU behavior)" \
+        "xargs" \
+        "a _ b\n" \
+        "" "a\n_\nb\n"
+
 exit $FAILCOUNT