4 files changed, 26 insertions, 4 deletions
diff --git a/shell/hush_test/hush-misc/empty_args.right b/shell/hush_test/hush-misc/empty_args.right
new file mode 100644
index 0000000..38ed8b8
--- /dev/null
+++ b/shell/hush_test/hush-misc/empty_args.right
@@ -0,0 +1,6 @@
+Null 0th arg:
+hush: can't execute '': No such file or directory
+127
+Null 1st arg:
+0
+Null arg in exec:
diff --git a/shell/hush_test/hush-misc/empty_args.tests b/shell/hush_test/hush-misc/empty_args.tests
new file mode 100755
index 0000000..efce549
--- /dev/null
+++ b/shell/hush_test/hush-misc/empty_args.tests
@@ -0,0 +1,9 @@
+echo Null 0th arg:
+""
+echo $?
+echo Null 1st arg:
+# printf without args would print usage info
+printf ""
+echo $?
+echo Null arg in exec:
+exec printf ""
diff --git a/shell/hush_test/hush-psubst/emptytick.right b/shell/hush_test/hush-psubst/emptytick.right
index d4b70c5..1f60ecf 100644
--- a/shell/hush_test/hush-psubst/emptytick.right
+++ b/shell/hush_test/hush-psubst/emptytick.right
@@ -1,14 +1,17 @@
 0
 0
+hush: can't execute '': No such file or directory
 0
+hush: can't execute '': No such file or directory
 0
 0
 0
 0
 0
+hush: can't execute '': No such file or directory
 0
+hush: can't execute '': No such file or directory
 0
 0
 0
-0
-0
+hush: can't execute '': No such file or directory
diff --git a/shell/hush_test/hush-psubst/emptytick.tests b/shell/hush_test/hush-psubst/emptytick.tests
index af3a183..a269f02 100755
--- a/shell/hush_test/hush-psubst/emptytick.tests
+++ b/shell/hush_test/hush-psubst/emptytick.tests
@@ -1,16 +1,20 @@
 true;  ``; echo $?
 false; ``; echo $?
+# UNFIXED BUG. bash sets $? to 127:
 true;  `""`; echo $?
+# bash sets $? to 127:
 false; `""`; echo $?
 true;  `     `; echo $?
 false; `     `; echo $?
 
 true;  $(); echo $?
 false; $(); echo $?
+# bash sets $? to 127:
 true;  $(""); echo $?
+# bash sets $? to 127:
 false; $(""); echo $?
 true;  $(     ); echo $?
 false; $(     ); echo $?
 
-true;  exec ''; echo $?
-false; exec ''; echo $?
+exec ''; echo $?
+echo Not reached