diff --git a/README.md b/README.md
index 002798a..170fbda 100644
--- a/README.md
+++ b/README.md
@@ -252,12 +252,3 @@ Why did I choose it? :
 
 + The good modules (native addon) for synchronous execution exist. But node-gyp can't compile those in some platforms or Node versions.
 + I think that the security is important more than the speed. Some modules have problem about security. (Those don't protect data.) I think that the speed is not needed usually, because readlineSync is used while user types keys.
-
-## Release History
- * 2015-02-22           v0.6.0          Add `setBufferSize()`.
- * 2015-02-12           v0.5.5          Support the Synchronous Process Execution of Node v0.12(v0.11).
- * 2015-01-27           v0.5.0          Add `options.noTrim`.
- * 2014-07-12           v0.4.0          Add `options.noEchoBack`.
- * 2014-07-12           v0.3.0          Add `setPrint()`.
- * 2013-08-30           v0.2.0          Rewrite exporting methods.
- * 2013-08-29           v0.1.0          Initial release.
diff --git a/lib/encrypt.js b/lib/encrypt.js
index ba8f62a..576eda2 100644
--- a/lib/encrypt.js
+++ b/lib/encrypt.js
@@ -1,3 +1,11 @@
+/*
+ * readlineSync
+ * https://github.com/anseki/readline-sync
+ *
+ * Copyright (c) 2015 anseki
+ * Licensed under the MIT license.
+ */
+
 var cipher = require('crypto').createCipher(
       process.argv[2] /*algorithm*/, process.argv[3] /*password*/),
   stdin = process.stdin,
diff --git a/lib/read.cs.js b/lib/read.cs.js
index 3fae749..b454100 100644
--- a/lib/read.cs.js
+++ b/lib/read.cs.js
@@ -1,4 +1,12 @@
-/*jshint wsh:true */
+/* jshint wsh:true */
+
+/*
+ * readlineSync
+ * https://github.com/anseki/readline-sync
+ *
+ * Copyright (c) 2015 anseki
+ * Licensed under the MIT license.
+ */
 
 var
   FSO_ForReading = 1, FSO_ForWriting = 2,
diff --git a/lib/read.ps1 b/lib/read.ps1
index a10863d..ea43e4b 100644
--- a/lib/read.ps1
+++ b/lib/read.ps1
@@ -1,3 +1,8 @@
+# readlineSync
+# https://github.com/anseki/readline-sync
+#
+# Copyright (c) 2015 anseki
+# Licensed under the MIT license.
 
 Param(
   [string] $display,
@@ -38,22 +43,23 @@ if ($options.encoded) {
 [bool] $isCooked = (-not $options.noEchoBack) -and (-not $options.keyIn)
 
 function writeTTY ($text) {
-  execWithTTY ('Write-Host ''' + ($text -replace '''', '''''') + ''' -NoNewline') | Out-Null
+  execWithTTY ('Write-Host ''' + ($text -replace '''', '''''') + ''' -NoNewline')
   $script:isInputLine = $True
 }
 
 # Instant method that opens TTY without CreateFile via P/Invoke in .NET Framework
 # **NOTE** Don't include special characters of DOS in $command when $getRes is True.
+# [string] $cmdPath = $Env:ComSpec
+# [string] $psPath = 'powershell.exe'
 function execWithTTY ($command, $getRes = $False) {
   if ($getRes) {
     $res = (cmd.exe /C "<CON powershell.exe -Command $command")
     if ($LastExitCode -ne 0) { exit 1 }
+    return $res
   } else {
     $command | cmd.exe /C ">CON powershell.exe -Command -"
     if ($LastExitCode -ne 0) { exit 1 }
-    $res = ''
   }
-  return $res
 }
 
 if ($options.display -ne '') {
@@ -76,11 +82,11 @@ while ($True) {
     # ReadKey() may returns [System.Array], then don't cast data.
     if ($chunk -isnot [string]) { $chunk = '' }
     $chunk = $chunk -replace '[\r\n]', ''
-    if ($chunk -eq '') { $isEol = $True } # NL or empty-text was input
+    if ($chunk -eq '') { $atEol = $True } # NL or empty-text was input
   } else {
     $chunk = execWithTTY 'Read-Host' $True
     $chunk = $chunk -replace '[\r\n]', ''
-    $isEol = $True
+    $atEol = $True
   }
 
   # other ctrl-chars
@@ -95,10 +101,10 @@ while ($True) {
   }
 
   $inputTTY += $chunk
-  if ($isEol -or ($options.keyIn -and ($inputTTY.Length -ge $reqSize))) { break }
+  if ($atEol -or ($options.keyIn -and ($inputTTY.Length -ge $reqSize))) { break }
 }
 
 if ((-not $isCooked) -and (-not ($options.keyIn -and (-not $isInputLine))))
-  { execWithTTY 'Write-Host ''''' | Out-Null } # new line
+  { execWithTTY 'Write-Host ''''' } # new line
 
 return '''' + $inputTTY + ''''
diff --git a/lib/read.sh b/lib/read.sh
index e91f034..2ecc442 100644
--- a/lib/read.sh
+++ b/lib/read.sh
@@ -1,3 +1,8 @@
+# readlineSync
+# https://github.com/anseki/readline-sync
+#
+# Copyright (c) 2015 anseki
+# Licensed under the MIT license.
 
 # getopt(s)
 while [ $# -ge 1 ]; do
@@ -62,11 +67,11 @@ do
   if [ -z "$is_cooked" ]; then
     chunk="$(dd if=/dev/tty bs=1 count=1 2>/dev/null)"
     chunk="$(printf '%s' "$chunk" | tr -d '\r\n')"
-    [ -z "$chunk" ] && is_eol='true' # NL or empty-text was input
+    [ -z "$chunk" ] && at_eol='true' # NL or empty-text was input
   else
     IFS= read -r chunk </dev/tty || exit $?
     chunk="$(printf '%s' "$chunk" | tr -d '\r\n')"
-    is_eol='true'
+    at_eol='true'
   fi
 
   # other ctrl-chars
@@ -83,7 +88,7 @@ do
   fi
 
   input="$input$chunk"
-  if [ -n "$is_eol" ] || \
+  if [ -n "$at_eol" ] || \
     ( [ -n "$options_keyIn" ] && [ ${#input} -ge $req_size ] ); then break; fi
 done
 
diff --git a/lib/readline-sync.js b/lib/readline-sync.js
index 1f3eee4..8ddde66 100644
--- a/lib/readline-sync.js
+++ b/lib/readline-sync.js
@@ -113,8 +113,9 @@ function readlineSync(options) {
   })();
 
   (function() { // try read
-    var buffer, reqSize, readSize, chunk, isEol, line, exclude,
-      isCooked = !options.noEchoBack && !options.keyIn;
+    var atEol, exclude,
+      isCooked = !options.noEchoBack && !options.keyIn,
+      buffer, reqSize, readSize, chunk, line;
 
     // Node v0.10- returns an error if same mode is set.
     function setRawMode(mode) {
@@ -140,7 +141,7 @@ function readlineSync(options) {
     }
     buffer = new Buffer((reqSize = options.keyIn ? 1 : bufSize));
 
-    if (options.exclude) {
+    if (options.keyIn && options.exclude) {
       exclude = new RegExp(options.exclude, 'g' + (options.cs ? '' : 'i'));
     }
 
@@ -157,16 +158,13 @@ function readlineSync(options) {
       }
       chunk = readSize > 0 ? buffer.toString(encoding, 0, readSize) : '\n';
 
-      if (!isCooked) {
-        chunk = chunk.replace(/[\r\n]/g, '');
-        if (!chunk) { isEol = true; } // NL or empty-text was input
-      } else if (typeof(line = (chunk.match(/^(.*?)[\r\n]/) || [])[1]) === 'string') {
+      if (typeof(line = (chunk.match(/^(.*?)[\r\n]/) || [])[1]) === 'string') {
         chunk = line;
-        isEol = true;
+        atEol = true;
       }
 
       chunk = chunk.replace(/[\x00-\x08\x0b\x0c\x0e-\x1f\x7f]/g, ''); // other ctrl-chars
-      if (chunk && options.keyIn && exclude) { chunk = chunk.replace(exclude, ''); }
+      if (chunk && exclude) { chunk = chunk.replace(exclude, ''); }
 
       if (chunk && !isCooked) {
         if (!options.noEchoBack) {
@@ -177,7 +175,8 @@ function readlineSync(options) {
       }
 
       input += chunk;
-      if (isEol || options.keyIn && input.length >= reqSize) { break; }
+      if (!options.keyIn && atEol ||
+        options.keyIn && input.length >= reqSize) { break; }
     }
 
     if (!isCooked && !silent) { fs.writeSync(fdW, '\n'); }
@@ -454,7 +453,7 @@ exports.question = function(query, options) {
 
 exports.keyIn = function(query, options) {
   var limit = options ? flattenArray(options.limit, function(value) {
-      return typeof value === 'string' || typeof value === 'number'; }) : [],
+      return typeof value === 'string' || typeof value === 'number'; }).join('') : '',
     readOptions = {
 /* jshint eqnull:true */
       display:        query != null ? query + '' : '',
@@ -462,8 +461,8 @@ exports.keyIn = function(query, options) {
       keyIn:          true,
       noEchoBack:     !!(options && options.noEchoBack),
       mask:           mask,
-      exclude:        limit.length ?
-                        '[^' + limit.join('').replace(/\W/g, '\\$&') + ']' : '',
+      exclude:        limit ? '[^' +
+                        limit.replace(/\n/g, '').replace(/\W/g, '\\$&') + ']' : '',
       cs:             !!(options && options.caseSensitive),
       noTrim:         true
     };