hush: fix break'ing out of {} and () groups; with testcase

function                                             old     new   delta
builtin_break                                         93     129     +36
builtin_continue                                      21      47     +26
run_list                                            1973    1976      +3

2 files changed, 17 insertions, 0 deletions

diff --git a/shell/hush_test/hush-misc/break5.right b/shell/hush_test/hush-misc/break5.right
new file mode 100644
index 000000000..0b9df2a4f
--- /dev/null
+++ b/shell/hush_test/hush-misc/break5.right
@@ -0,0 +1,13 @@
+A
+B
+0
+A:a
+B
+D
+A:b
+B
+D
+A:c
+B
+D
+0
diff --git a/shell/hush_test/hush-misc/break5.tests b/shell/hush_test/hush-misc/break5.tests
new file mode 100755
index 000000000..273e040ec
--- /dev/null
+++ b/shell/hush_test/hush-misc/break5.tests
@@ -0,0 +1,4 @@
+while true; do echo A; { echo B; break; echo C; }; echo D; done
+echo $?
+for v in a b c; do echo A:$v; (echo B; break; echo C); echo D; done
+echo $?