hush: do not accept "if() { echo; }" function def

function                                             old     new   delta
parse_stream                                        2634    2692     +58
msg_and_die_if_script                                  -      21     +21
syntax_error_unexpected_ch                            41      46      +5
syntax_error_at                                       14      18      +4
die_if_script                                         31      28      -3
setup_redirects                                      319     308     -11
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/2 up/down: 88/-14)             Total: 74 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/shell/hush_test/hush-parsing/groups_and_keywords2.right b/shell/hush_test/hush-parsing/groups_and_keywords2.right
new file mode 100644
index 000000000..ae74a5db9
--- /dev/null
+++ b/shell/hush_test/hush-parsing/groups_and_keywords2.right
@@ -0,0 +1,3 @@
+hush: syntax error: unexpected )
+Fail:2
+hush: syntax error: unexpected )
diff --git a/shell/hush_test/hush-parsing/groups_and_keywords2.tests b/shell/hush_test/hush-parsing/groups_and_keywords2.tests
new file mode 100755
index 000000000..ab33b909f
--- /dev/null
+++ b/shell/hush_test/hush-parsing/groups_and_keywords2.tests
@@ -0,0 +1,9 @@
+# This is an error
+(eval 'if() { echo; }')
+echo Fail:$?
+# ^^^^^^ bash prints 1, but interactively it sets $? = 2
+# we print 2
+
+# This is an error, and it aborts in script
+if() { echo; }
+echo Not reached