Fix using a relative path with --basedir

CHANGELOG.asciidoc

@@ -44,6 +44,8 @@ Fixed
 - When hinting input fields (`:t`), also consider input elements without a type.
 - Fixed crash when opening an invalid URL with a percent-encoded and a real @ in it
 - Fixed default `;o` and `;O` bindings
+- Fixed local storage not working (and possible other bugs) when using a
+  relative path with `--basedir`.
 
 v0.8.1
 ------

qutebrowser/utils/standarddir.py

@@ -168,7 +168,7 @@ def _from_args(typ, args):
             suffix = basedir_suffix[typ]
         except KeyError:  # pragma: no cover
             return (False, None)
-        return (True, os.path.join(basedir, suffix))
+        return (True, os.path.abspath(os.path.join(basedir, suffix)))
 
     try:
         argname = typ_to_argparse_arg[typ]

tests/unit/utils/test_standarddir.py

@@ -225,6 +225,15 @@ class TestArguments:
         func = getattr(standarddir, typ)
         assert func() == expected
 
+    def test_basedir_relative(self, tmpdir):
+        """Test --basedir with a relative path."""
+        basedir = (tmpdir / 'basedir')
+        basedir.ensure(dir=True)
+        with tmpdir.as_cwd():
+            args = types.SimpleNamespace(basedir='basedir')
+            standarddir.init(args)
+            assert standarddir.config() == str(basedir / 'config')
+
 
 class TestInitCacheDirTag:
 
@@ -311,6 +320,7 @@ class TestCreatingDir:
         m.sep = os.sep
         m.path.join = os.path.join
         m.path.exists.return_value = False
+        m.path.abspath = lambda x: x
 
         args = types.SimpleNamespace(basedir=str(tmpdir))
         standarddir.init(args)