Do not wrap errors into other errors. The trace is going to be manipulated that way.

Author: Ruben Bridgewater

index.js

@@ -1055,7 +1055,7 @@ Multi.prototype.exec = function (callback) {
                 if (typeof cur[cur.length - 1] === "function") {
                     cur[cur.length - 1](err);
                 } else {
-                    errors.push(new Error(err));
+                    errors.push(err);
                 }
             }
         });
@@ -1065,7 +1065,7 @@ Multi.prototype.exec = function (callback) {
     return this._client.send_command("exec", [], function (err, replies) {
         if (err) {
             if (callback) {
-                errors.push(new Error(err));
+                errors.push(err);
                 callback(errors);
                 return;
             } else {

test/commands/multi.spec.js

@@ -231,8 +231,8 @@ describe("The 'multi' method", function () {
                     client.multi().set("foo").exec(function (err, reply) {
                         assert(Array.isArray(err), "err should be an array");
                         assert.equal(2, err.length, "err should have 2 items");
-                        assert(err[0].message.match(/ERR/), "First error message should contain ERR");
-                        assert(err[1].message.match(/EXECABORT/), "First error message should contain EXECABORT");
+                        assert(err[0].message.match(/^ERR/), "First error message should begin with ERR");
+                        assert(err[1].message.match(/^EXECABORT/), "First error message should begin with EXECABORT");
                         return done();
                     });
                 });