Carriage returns are ignored by cmd

src/Composer/Util/ProcessExecutor.php

@@ -180,9 +180,8 @@ class ProcessExecutor
             return "'".str_replace("'", "'\\''", $argument)."'";
         }
 
-        if (strpbrk($argument, "\r\n") !== false) {
-            $argument = preg_replace("/(\r\n|\n|\r)/", ' ', $argument);
-        }
+        // New lines break cmd.exe command parsing
+        $argument = strtr($argument, "\n", ' ');
 
         $quote = strpbrk($argument, " \t") !== false;
         $argument = preg_replace('/(\\\\*)"/', '$1$1\\"', $argument, -1, $dquotes);

tests/Composer/Test/Util/ProcessExecutorTest.php

@@ -144,8 +144,8 @@ class ProcessExecutorTest extends TestCase
             // unix single-quote must be escaped
             'unix-sq'       => array("a'bc", "a'bc", "'a'\\''bc'"),
 
-            // CR LF must be replaced
-            'crlf'          => array("a\r\nb\nc\rd", '"a b c d"', "'a\r\nb\nc\rd'"),
+            // new lines must be replaced
+            'new lines'     => array("a\nb\nc", '"a b c"', "'a\nb\nc'"),
 
             // whitespace <space> must be quoted
             'ws space'      => array('a b c', '"a b c"', "'a b c'"),