Correctly render more than one nested truth test

lib/dust-helpers.js

@@ -48,6 +48,7 @@ function addSelectState(context, opts) {
   }
 
   var state = {
+    isPending: false,
     isResolved: false,
     isDeferredComplete: false,
     deferreds: []
@@ -105,7 +106,7 @@ function filter(chunk, context, bodies, params, helperName, test) {
   var body = bodies.block,
       skip = bodies.else,
       selectState = getSelectState(context) || {},
-      key, value, type;
+      willResolve, key, value, type;
 
   // Once one truth test in a select passes, short-circuit the rest of the tests
   if (selectState.isResolved) {
@@ -128,10 +129,16 @@ function filter(chunk, context, bodies, params, helperName, test) {
   value = coerce(context.resolve(params.value), type);
 
   if (test(key, value)) {
-    if(body) {
+    // Once a truth test passes, put the select into "pending" state. Now we can render the body of
+    // the truth test (which may contain truth tests) without altering the state of the select.
+    if (!selectState.isPending) {
+      willResolve = true;
+      selectState.isPending = true;
+    }
+    if (body) {
       chunk = chunk.render(body, context);
     }
-    if (selectState) {
+    if (willResolve) {
       selectState.isResolved = true;
     }
   } else if (skip) {

test/jasmine-test/spec/helpersTests.js

@@ -1066,7 +1066,8 @@
         name: "select with nested @eq",
         source: ['{@select key=selectKey}',
                    '{@eq value=1}One',
-                     '{@eq key=test value=5}Correct!{/eq}',
+                     '{@eq key=test value=5}Correct{/eq}',
+                     '{@eq key=test value=5}!{/eq}',
                      '{@select}',
                        '{@eq value=1}Bug! No key specified{:else}Bug! No key specified{/eq}',
                        '{@eq key=test value=5}InnerCorrect!{/eq}',