diff --git a/calculate/templates/template_engine.py b/calculate/templates/template_engine.py
index 9d906fd..eb5fa2c 100644
--- a/calculate/templates/template_engine.py
+++ b/calculate/templates/template_engine.py
@@ -1493,7 +1493,7 @@ class CalculateExtension(Extension):
         '''
         fname = self.get_full_filepath(fname)
         try:
-            reg = re.compile(regpattern)
+            reg = re.compile(regpattern, re.MULTILINE)
         except re.error:
             raise TemplateSyntaxError(_("Wrong regular expression"))
         fileContent = readFile(fname)
diff --git a/calculate/vars/install/os/__init__.py b/calculate/vars/install/os/__init__.py
index c2a8fa1..7a91869 100644
--- a/calculate/vars/install/os/__init__.py
+++ b/calculate/vars/install/os/__init__.py
@@ -1,35 +1,11 @@
 from calculate.variables.datavars import Variable, Namespace, Dependence, \
     StringType, BooleanType, HashType, ListType, Calculate, Copy
 from calculate.vars.main.os.func import get_arch_gentoo
-
-from calculate.utils.package import PackageAtomParser
-
-def get_available_audio_system():
-    audio_systems = (
-        ('alsa', None),
-        ('pulseaudio', 'media-sound/pulseaudio')
-    )
-    package_db = PackageAtomParser()
-    return [
-        audio_system
-        for audio_system, pkg in audio_systems
-        if pkg is None or package_db.is_package_exists(pkg)
-    ]
-
-def get_audio_selected(available_systems, cmdline_audio):
-    available_systems = available_systems.value
-
-    if 'pulseaudio' in available_systems:
-        cmdline_audio = cmdline_audio.value
-        if cmdline_audio and cmdline_audio == 'alsa':
-            return 'alsa'
-        else:
-            return 'pulseaudio'
-    return 'alsa'
+from .func import *
 
 with Namespace("arch"):
     Variable("machine", type=StringType,
-        source=Copy("main.os.arch.machine"))
+        source=Calculate(lambda x: x.value, "main.os.arch.machine"))
     Variable("gentoo", type=StringType,
         source=Calculate(get_arch_gentoo, ".machine"))
 
diff --git a/tests/templates/test_template_engine.py b/tests/templates/test_template_engine.py
index e6d3ef2..436bb8a 100644
--- a/tests/templates/test_template_engine.py
+++ b/tests/templates/test_template_engine.py
@@ -290,6 +290,16 @@ parameter_2 = {{ vars_1.var_1 }}'''
                 "grep": "'/test_grep', 'NOSTATUSLINE=(.*)'",
                 "result": "true"
             },
+            {
+                "name": "multiline pattern found",
+                "grep": "'/test_grep', '^NOSTATUSLINE=true'",
+                "result": "NOSTATUSLINE=true"
+            },
+            {
+                "name": "multiline pattern not found",
+                "grep": "'/test_grep', '^STATUSLINE=true'",
+                "result": ""
+            },
     ], 
     ids=lambda x:x["name"])
     def test_grep(self, case):
diff --git a/tests/vars/test_vars.py b/tests/vars/test_vars.py
index 40b9043..cf50ebe 100644
--- a/tests/vars/test_vars.py
+++ b/tests/vars/test_vars.py
@@ -3,9 +3,14 @@ import calculate.vars.main.os as main_os
 import calculate.vars.main.cl as main_cl
 import calculate.vars.main.os.x11 as main_os_x11
 from calculate.vars.main.cl import CmdlineParams
+import calculate.vars.install.os.func as install_os
 import mock
 from itertools import chain
 
+class Var:
+    def __init__(self, value):
+        self.value = value
+
 @pytest.mark.parametrize('case',
     [
         {
@@ -110,13 +115,9 @@ def test_main_cl_cmdline(case):
     ids=lambda x:"{}->{}".format(x["source"],x["result"]))
 @pytest.mark.calculate_vars
 def test_main_os_get_arch_gentoo(case):
-    class Var:
-        def __init__(self, value):
-            self.value = value
     assert main_os.get_arch_gentoo(Var(case["source"])) == case["result"]
 
 
-import calculate.vars.install.os.func as install_os
 @pytest.mark.parametrize('case',
     [
         {
@@ -135,27 +136,50 @@ import calculate.vars.install.os.func as install_os
 def test_install_os_get_available_audio_system(case):
     with mock.patch('calculate.vars.install.os.func.PackageAtomParser.is_package_exists') as exists:
         exists.return_value = case["exists"]
-    assert install_os.get_available_audio_system() == case["result"]
+        assert install_os.get_available_audio_system() == case["result"]
 
-#def get_available_audio_system():
-#    audio_systems = (
-#        ('alsa', None),
-#        ('pulseaudio', 'media-sound/pulseaudio')
-#    )
-#    package_db = PackageAtomParser()
-#    return [
-#        audio_system
-#        for audio_system, pkg in audio_systems
-#        if pkg is None or package_db.is_package_exists(pkg)
-#    ]
-#
-#def get_audio_selected(available_systems, cmdline_audio):
-#    available_systems = available_systems.value
-#
-#    if 'pulseaudio' in available_systems:
-#        cmdline_audio = cmdline_audio.value
-#        if cmdline_audio and cmdline_audio == 'alsa':
-#            return 'alsa'
-#        else:
-#            return 'pulseaudio'
-#    return 'alsa'
+@pytest.mark.parametrize('case',
+    [
+        {
+            "name": "default all available",
+            "available_systems": ["alsa","pulseaudio"],
+            "cmdline_audio": "",
+            "result": "pulseaudio"
+        },
+        {
+            "name": "default all pulse unavailable",
+            "available_systems": ["alsa"],
+            "cmdline_audio": "",
+            "result": "alsa"
+        },
+        {
+            "name": "all available alsa selected",
+            "available_systems": ["alsa","pulseaudio"],
+            "cmdline_audio": "alsa",
+            "result": "alsa"
+        },
+        {
+            "name": "all available pulse selected",
+            "available_systems": ["alsa","pulseaudio"],
+            "cmdline_audio": "pulseaudio",
+            "result": "pulseaudio"
+        },
+        {
+            "name": "all available wrong cmd line",
+            "available_systems": ["alsa","pulseaudio"],
+            "cmdline_audio": "wrong",
+            "result": "pulseaudio"
+        },
+        {
+            "name": "pulse not available wrong cmd line",
+            "available_systems": ["alsa"],
+            "cmdline_audio": "wrong",
+            "result": "alsa"
+        },
+    ],
+    ids=lambda x:x["name"])
+@pytest.mark.calculate_vars
+def test_install_os_get_available_audio_system(case):
+    assert install_os.get_audio_selected(
+        Var(case["available_systems"]),
+        Var(case["cmdline_audio"])) == case["result"]