more care around generated names, fixes #60 #82 and #97

test/codegen/expect/try_catch.js

Index: test/codegen/expect/try_catch.js
diff --git a/test/codegen/expect/try_catch.js b/test/codegen/expect/try_catch.js
index 9ad17ef3a632d4cf824bc6822f71f2858da271ae..8a5d5b8c48a6597c9c2c36a9007c9c9f0c35eafd 100644
--- a/test/codegen/expect/try_catch.js
+++ b/test/codegen/expect/try_catch.js
@@ -1,21 +1,39 @@
 var try_catch;
 (function(exports) {
   'use strict';
-  // Function main: () → dynamic
-  function main() {
+  // Function foo: () → dynamic
+  function foo() {
     try {
       throw "hi there";
-    } catch ($e) {
-      if (dart.is($e, core.String)) {
-        let e = $e;
+    } catch (e$) {
+      if (dart.is(e$, core.String)) {
+        let e = e$;
+        let t = dart.stackTrace(e);
+      } else {
+        let e = e$;
         let t = dart.stackTrace(e);
+        throw e;
       }
-      let e = $e;
+    }
+
+  }
+  // Function bar: () → dynamic
+  function bar() {
+    try {
+      throw "hi there";
+    } catch (e$) {
+      let e = e$;
       let t = dart.stackTrace(e);
-      throw e;
     }
 
   }
+  // Function main: () → dynamic
+  function main() {
+    foo();
+    bar();
+  }
   // Exports:
+  exports.foo = foo;
+  exports.bar = bar;
   exports.main = main;
 })(try_catch || (try_catch = {}));