diff -Nru php-composer-semver-1.4.1/CHANGELOG.md php-composer-semver-1.4.2/CHANGELOG.md
--- php-composer-semver-1.4.1/CHANGELOG.md	2016-06-02 09:04:51.000000000 +0000
+++ php-composer-semver-1.4.2/CHANGELOG.md	2016-08-30 16:08:34.000000000 +0000
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+### [1.4.2] 2016-08-30
+
+  * Fixed: collapsing of complex constraints lead to buggy constraints
+
 ### [1.4.1] 2016-06-02
 
   * Changed: branch-like requirements no longer strip build metadata - [composer/semver#38](https://github.com/composer/semver/pull/38).
diff -Nru php-composer-semver-1.4.1/debian/changelog php-composer-semver-1.4.2/debian/changelog
--- php-composer-semver-1.4.1/debian/changelog	2016-06-04 15:37:07.000000000 +0000
+++ php-composer-semver-1.4.2/debian/changelog	2017-01-26 03:37:16.000000000 +0000
@@ -1,3 +1,10 @@
+php-composer-semver (1.4.2-1) unstable; urgency=medium
+
+  [ Rob Bast ]
+  * do not collapse ranges if other constraints apply
+
+ -- David Prévot <taffit@debian.org>  Wed, 25 Jan 2017 17:37:16 -1000
+
 php-composer-semver (1.4.1-1) unstable; urgency=medium
 
   [ Rob Bast ]
diff -Nru php-composer-semver-1.4.1/README.md php-composer-semver-1.4.2/README.md
--- php-composer-semver-1.4.1/README.md	2016-06-02 09:04:51.000000000 +0000
+++ php-composer-semver-1.4.2/README.md	2016-08-30 16:08:34.000000000 +0000
@@ -59,7 +59,7 @@
 The `Composer\Semver\Semver` class provides the following methods:
 
 * satisfies($version, $constraints)
-* satisfiedBy($constraint, array $versions)
+* satisfiedBy(array $versions, $constraint)
 * sort($versions)
 * rsort($versions)
 
diff -Nru php-composer-semver-1.4.1/src/VersionParser.php php-composer-semver-1.4.2/src/VersionParser.php
--- php-composer-semver-1.4.1/src/VersionParser.php	2016-06-02 09:04:51.000000000 +0000
+++ php-composer-semver-1.4.2/src/VersionParser.php	2016-08-30 16:08:34.000000000 +0000
@@ -265,6 +265,8 @@
             // them into one constraint
             && $orGroups[0] instanceof MultiConstraint
             && $orGroups[1] instanceof MultiConstraint
+            && 2 === count($orGroups[0]->getConstraints())
+            && 2 === count($orGroups[1]->getConstraints())
             && ($a = (string) $orGroups[0])
             && substr($a, 0, 3) === '[>=' && (false !== ($posA = strpos($a, '<', 4)))
             && ($b = (string) $orGroups[1])