Add a context manager to unset organizationName.

qutebrowser/utils/qtutils.py

@@ -37,6 +37,7 @@ import contextlib
 
 from PyQt5.QtCore import (qVersion, QEventLoop, QDataStream, QByteArray,
                           QIODevice, QSaveFile)
+from PyQt5.QtWidgets import QApplication
 
 
 MAXVALS = {
@@ -200,6 +201,21 @@ def savefile_open(filename, binary=False, encoding='utf-8'):
             raise OSError(f.errorString())
 
 
+@contextlib.contextmanager
+def unset_organization():
+    """Temporarily unset QApplication.organizationName().
+
+    This is primarily needed in config.py.
+    """
+    qapp = QApplication.instance()
+    orgname = qapp.organizationName()
+    qapp.setOrganizationName(None)
+    try:
+        yield
+    finally:
+        qapp.setOrganizationName(orgname)
+
+
 class PyQIODevice(io.BufferedIOBase):
 
     """Wrapper for a QIODevice which provides a python interface.

qutebrowser/utils/standarddir.py

@@ -24,21 +24,13 @@ import os.path
 
 from PyQt5.QtCore import QCoreApplication, QStandardPaths
 
-from qutebrowser.utils import log
+from qutebrowser.utils import log, qtutils
 
 
 def _writable_location(typ):
     """Wrapper around QStandardPaths.writableLocation."""
-    qapp = QCoreApplication.instance()
-    orgname = qapp.organizationName()
-    # We need to temporarily unset the organisationname here since the
-    # webinspector wants it to be set to store its persistent data correctly,
-    # but we don't want that to happen.
-    qapp.setOrganizationName(None)
-    try:
+    with qtutils.unset_organization():
         path = QStandardPaths.writableLocation(typ)
-    finally:
-        qapp.setOrganizationName(orgname)
     if not path:
         raise ValueError("QStandardPaths returned an empty value!")
     # Qt seems to use '/' as path separator even on Windows...