REPL: Fix for multiline input when using custom eval function

doc/api/repl.markdown

@@ -49,6 +49,8 @@ the following values:
 
  - `eval` - function that will be used to eval each given line. Defaults to
    an async wrapper for `eval()`. See below for an example of a custom `eval`.
+
+ - `recoverable` - function that will return a `bool` when passed an error and report if it is recoverable. Use if your `eval` returns none standard errors but you still want the benefits of multiline input.
 
  - `useColors` - a boolean which specifies whether or not the `writer` function
    should output colors. If a different `writer` function is set then this does

lib/repl.js

@@ -82,7 +82,7 @@ function REPLServer(prompt, stream, eval_, useGlobal, ignoreUndefined) {
     return new REPLServer(prompt, stream, eval_, useGlobal, ignoreUndefined);
   }
 
-  var options, input, output, dom;
+  var options, input, output, dom, recoverableCheck;
   if (util.isObject(prompt)) {
     // an options object was given
     options = prompt;
@@ -94,6 +94,7 @@ function REPLServer(prompt, stream, eval_, useGlobal, ignoreUndefined) {
     ignoreUndefined = options.ignoreUndefined;
     prompt = options.prompt;
     dom = options.domain;
+    recoverableCheck = options.recoverable || isRecoverableError;
   } else if (!util.isString(prompt)) {
     throw new Error('An options Object, or a prompt String are required');
   } else {
@@ -298,7 +299,7 @@ function REPLServer(prompt, stream, eval_, useGlobal, ignoreUndefined) {
 
       // If error was SyntaxError and not JSON.parse error
       if (e) {
-        if (e instanceof Recoverable) {
+        if (recoverableCheck(e)) {
           // Start buffering data like that:
           // {
           // ...  x: 1
@@ -952,9 +953,4 @@ function isRecoverableError(e) {
   return e &&
       e.name === 'SyntaxError' &&
       /^(Unexpected end of input|Unexpected token)/.test(e.message);
-}
-
-function Recoverable(err) {
-  this.err = err;
-}
-inherits(Recoverable, SyntaxError);
+}

test/simple/test-repl-options.js

@@ -58,6 +58,7 @@ assert.equal(r1.useColors, r1.rli.terminal);
 // 2
 function writer() {}
 function evaler() {}
+function recoverTester() {}
 var r2 = repl.start({
   input: stream,
   output: stream,
@@ -66,6 +67,7 @@ var r2 = repl.start({
   useGlobal: true,
   ignoreUndefined: true,
   eval: evaler,
+  recoverable: recoverTester,
   writer: writer
 });
 assert.equal(r2.input, stream);