Merge branch '3.1-stable' into develop

Conflicts resolved:
	system/core/CodeIgniter.php
	system/core/Common.php
	system/core/Input.php
	system/helpers/cookie_helper.php
	tests/codeigniter/helpers/html_helper_test.php
	user_guide_src/source/changelog.rst
	user_guide_src/source/conf.py
	user_guide_src/source/installation/downloads.rst
	user_guide_src/source/installation/upgrading.rst
	user_guide_src/source/libraries/input.rst

2 files changed, 28 insertions, 2 deletions

diff --git a/tests/codeigniter/helpers/html_helper_test.php b/tests/codeigniter/helpers/html_helper_test.php
index 5565e011b..3ca23e015 100644
--- a/tests/codeigniter/helpers/html_helper_test.php
+++ b/tests/codeigniter/helpers/html_helper_test.php
@@ -33,6 +33,20 @@ class Html_helper_test extends CI_TestCase {
 
 	// ------------------------------------------------------------------------
 
+	public function test_img()
+	{
+		$this->ci_set_config('base_url', 'http://localhost/');
+		$this->assertEquals('<img src="http://localhost/test" alt="" />', img("test"));
+		$this->assertEquals('<img src="data:foo/bar,baz" alt="" />', img("data:foo/bar,baz"));
+		$this->assertEquals('<img src="http://localhost/data://foo" alt="" />', img("data://foo"));
+		$this->assertEquals('<img src="//foo.bar/baz" alt="" />', img("//foo.bar/baz"));
+		$this->assertEquals('<img src="http://foo.bar/baz" alt="" />', img("http://foo.bar/baz"));
+		$this->assertEquals('<img src="https://foo.bar/baz" alt="" />', img("https://foo.bar/baz"));
+		$this->assertEquals('<img src="ftp://foo.bar/baz" alt="" />', img("ftp://foo.bar/baz"));
+	}
+
+	// ------------------------------------------------------------------------
+
 	public function test_Ul()
 	{
 		$expect = <<<EOH
diff --git a/tests/codeigniter/libraries/Encryption_test.php b/tests/codeigniter/libraries/Encryption_test.php
index 96e52ada8..99c5d4b9d 100644
--- a/tests/codeigniter/libraries/Encryption_test.php
+++ b/tests/codeigniter/libraries/Encryption_test.php
@@ -94,10 +94,22 @@ class Encryption_test extends CI_TestCase {
 		}
 
 		// Test default length, it must match the digest size
-		$this->assertEquals(64, strlen($this->encryption->hkdf('foobar', 'sha512')));
+		$hkdf_result = $this->encryption->hkdf('foobar', 'sha512');
+		$this->assertEquals(
+			64,
+			defined('MB_OVERLOAD_STRING')
+				? mb_strlen($hkdf_result, '8bit')
+				: strlen($hkdf_result)
+		);
 
 		// Test maximum length (RFC5869 says that it must be up to 255 times the digest size)
-		$this->assertEquals(12240, strlen($this->encryption->hkdf('foobar', 'sha384', NULL, 48 * 255)));
+		$hkdf_result = $this->encryption->hkdf('foobar', 'sha384', NULL, 48 * 255);
+		$this->assertEquals(
+			12240,
+			defined('MB_OVERLOAD_STRING')
+				? mb_strlen($hkdf_result, '8bit')
+				: strlen($hkdf_result)
+		);
 		$this->assertFalse($this->encryption->hkdf('foobar', 'sha224', NULL, 28 * 255 + 1));
 
 		// CI-specific test for an invalid digest