defer coercion completely until after parsing

index.js

@@ -280,7 +280,7 @@ function parse (args, opts) {
   setConfig(argv)
   setConfigObjects()
   applyEnvVars(argv, false)
-  applyArrayCoercions(argv)
+  applyCoercions(argv)
   applyDefaultsAndAliases(argv, flags.aliases, defaults)
 
   // for any counts either not in args or without an explicit default, set to 0
@@ -483,11 +483,9 @@ function parse (args, opts) {
     })
   }
 
-  function applyArrayCoercions (argv) {
+  function applyCoercions (argv) {
     var coerce
-    Object.keys(argv).filter(function (key) {
-      return key === '_' || checkAllAliases(key, flags.arrays)
-    }).forEach(function (key) {
+    Object.keys(argv).forEach(function (key) {
       coerce = checkAllAliases(key, flags.coercions)
       if (typeof coerce === 'function') {
         try {
@@ -538,14 +536,6 @@ function parse (args, opts) {
     })
 
     var key = keys[keys.length - 1]
-    var coerce = !checkAllAliases(key, flags.arrays) && checkAllAliases(key, flags.coercions)
-    if (typeof coerce === 'function') {
-      try {
-        value = coerce(value)
-      } catch (err) {
-        error = err
-      }
-    }
 
     if (value === increment) {
       o[key] = increment(o[key])

test/yargs-parser.js

@@ -1984,7 +1984,8 @@ describe('yargs-parser', function () {
       var parsed = parser(['--foo.bar', 'nananana'], {
         coerce: {
           foo: function (val) {
-            return val + ', batman!'
+            val.bar += ', batman!'
+            return val
           }
         }
       })
@@ -1995,7 +1996,9 @@ describe('yargs-parser', function () {
       var parsed = parser(['--foo', '99', '-f', '33'], {
         coerce: {
           f: function (arg) {
-            return arg * -1
+            return arg.map(function (a) {
+              return a * -1
+            })
           }
         },
         alias: {