Add a UrlPattern config type

For some settings it makes sense to have a list of URL patterns in the config,
rather than having a per-domain boolean setting.

doc/help/settings.asciidoc

@@ -3449,5 +3449,8 @@ See the setting's valid values for more information on allowed values.
 See https://sqlite.org/lang_datefunc.html for reference.
 |UniqueCharString|A string which may not contain duplicate chars.
 |Url|A URL as a string.
+|UrlPattern|A match pattern for a URL.
+
+See https://developer.chrome.com/apps/match_patterns for the allowed syntax.
 |VerticalPosition|The position of the download bar.
 |==============

qutebrowser/config/configtypes.py

@@ -61,7 +61,7 @@ from PyQt5.QtWidgets import QTabWidget, QTabBar
 
 from qutebrowser.commands import cmdutils
 from qutebrowser.config import configexc
-from qutebrowser.utils import standarddir, utils, qtutils, urlutils
+from qutebrowser.utils import standarddir, utils, qtutils, urlutils, urlmatch
 from qutebrowser.keyinput import keyutils
 
 
@@ -1661,3 +1661,22 @@ class Key(BaseType):
             return keyutils.KeySequence.parse(value)
         except keyutils.KeyParseError as e:
             raise configexc.ValidationError(value, str(e))
+
+
+class UrlPattern(BaseType):
+
+    """A match pattern for a URL.
+
+    See https://developer.chrome.com/apps/match_patterns for the allowed
+    syntax.
+    """
+
+    def to_py(self, value):
+        self._basic_py_validation(value, str)
+        if not value:
+            return None
+
+        try:
+            return urlmatch.UrlPattern(value)
+        except urlmatch.ParseError as e:
+            raise configexc.ValidationError(value, str(e))

tests/unit/config/test_configtypes.py

@@ -35,7 +35,7 @@ from PyQt5.QtGui import QColor, QFont
 from PyQt5.QtNetwork import QNetworkProxy
 
 from qutebrowser.config import configtypes, configexc
-from qutebrowser.utils import debug, utils, qtutils
+from qutebrowser.utils import debug, utils, qtutils, urlmatch
 from qutebrowser.browser.network import pac
 from qutebrowser.keyinput import keyutils
 from tests.helpers import utils as testutils
@@ -2099,6 +2099,21 @@ class TestKey:
             klass().to_py(val)
 
 
+class TestUrlPattern:
+
+    @pytest.fixture
+    def klass(self):
+        return configtypes.UrlPattern
+
+    def test_to_py_valid(self, klass):
+        pattern = 'http://*.example.com/'
+        assert klass().to_py(pattern) == urlmatch.UrlPattern(pattern)
+
+    def test_to_py_invalid(self, klass):
+        with pytest.raises(configexc.ValidationError):
+            klass().to_py('http://')
+
+
 @pytest.mark.parametrize('first, second, equal', [
     (re.compile('foo'), RegexEq('foo'), True),
     (RegexEq('bar'), re.compile('bar'), True),