hush: fix a case where "$@" must expand to no word at all

2 files changed, 16 insertions, 0 deletions

diff --git a/shell/hush_test/hush-parsing/starquoted2.right b/shell/hush_test/hush-parsing/starquoted2.right
new file mode 100644
index 0000000..46f2436
--- /dev/null
+++ b/shell/hush_test/hush-parsing/starquoted2.right
@@ -0,0 +1,2 @@
+Should be printed
+Should be printed
diff --git a/shell/hush_test/hush-parsing/starquoted2.tests b/shell/hush_test/hush-parsing/starquoted2.tests
new file mode 100755
index 0000000..782d71b
--- /dev/null
+++ b/shell/hush_test/hush-parsing/starquoted2.tests
@@ -0,0 +1,14 @@
+if test $# != 0; then
+    exec "$THIS_SH" "$0"
+fi
+
+# No params!
+for a in "$*"; do echo Should be printed; done
+for a in "$@"; do echo Should not be printed; done
+# Yes, believe it or not, bash is mesmerized by "$@" and stops
+# treating "" as "this word cannot be expanded to nothing,
+# but must be at least null string". Now it can be expanded to nothing.
+for a in "$@"""; do echo Should not be printed; done
+for a in """$@"; do echo Should not be printed; done
+for a in """$@"''"$@"''; do echo Should not be printed; done
+for a in ""; do echo Should be printed; done