case w in `echo w`) echo OK_51;; `echo WRONG >&2`w) echo WRONG;; esac;
case w in `echo OK_52 >&2`) echo SKIP;; `echo`w) echo OK_53;; esac;
+
+# parsing cases in subshells can easily get messy
+ case m in m) echo OK_sub1;; esac
+ case m in (m) echo OK_sub2;; esac
+(case m in m) echo OK_sub3;; esac)
+(case m in (m) echo OK_sub4;; esac)
+(
+ case m in m) echo OK_sub5;; esac
+)
+(
+ case m in (m) echo OK_sub6;; esac
+)
+(case esac in "esac") echo OK_esac1;; esac)
+
+echo Done