Re-entrant transition.each.

In theory, you could call transition.each within the context of another
transition.each, so we should be careful how we restore the default settings.

d3.v2.js

@@ -2342,10 +2342,13 @@ d3_transitionPrototype.duration = function(value) {
       : (value = Math.max(1, value | 0), function(d, i, j) { groups[j][i].duration = value; }));
 };
 function d3_transition_each(callback) {
-  var id = d3_transitionId;
+  var id = d3_transitionId,
+      ease = d3_transitionEase,
+      delay = d3_transitionDelay,
+      duration = d3_transitionDuration;
+
   d3_transitionId = this.id;
   d3_transitionEase = this.ease();
-
   for (var j = 0, m = this.length; j < m; j++) {
     for (var group = this[j], i = 0, n = group.length; i < n; i++) {
       var node = group[i];
@@ -2358,9 +2361,9 @@ function d3_transition_each(callback) {
   }
 
   d3_transitionId = id;
-  d3_transitionDelay = d3_transitionDefaultDelay;
-  d3_transitionDuration = d3_transitionDefaultDuration;
-  d3_transitionEase = d3_transitionDefaultEase;
+  d3_transitionEase = ease;
+  d3_transitionDelay = delay;
+  d3_transitionDuration = duration;
   return this;
 }
 d3_transitionPrototype.transition = function() {

src/core/transition-each.js

@@ -1,8 +1,11 @@
 function d3_transition_each(callback) {
-  var id = d3_transitionId;
+  var id = d3_transitionId,
+      ease = d3_transitionEase,
+      delay = d3_transitionDelay,
+      duration = d3_transitionDuration;
+
   d3_transitionId = this.id;
   d3_transitionEase = this.ease();
-
   for (var j = 0, m = this.length; j < m; j++) {
     for (var group = this[j], i = 0, n = group.length; i < n; i++) {
       var node = group[i];
@@ -15,8 +18,8 @@ function d3_transition_each(callback) {
   }
 
   d3_transitionId = id;
-  d3_transitionDelay = d3_transitionDefaultDelay;
-  d3_transitionDuration = d3_transitionDefaultDuration;
-  d3_transitionEase = d3_transitionDefaultEase;
+  d3_transitionEase = ease;
+  d3_transitionDelay = delay;
+  d3_transitionDuration = duration;
   return this;
 }