Log unknown settings in configuration and theme files.

3 files changed, 20 insertions, 4 deletions

diff --git a/alot/settings/manager.py b/alot/settings/manager.py
index 10a441ed..dffe1b32 100644
--- a/alot/settings/manager.py
+++ b/alot/settings/manager.py
@@ -79,7 +79,7 @@ class SettingsManager(object):
         """parse alot's config file from path"""
         spec = os.path.join(DEFAULTSPATH, 'alot.rc.spec')
         newconfig = read_config(
-            self.alot_rc_path, spec, checks={
+            self.alot_rc_path, spec, report_extra=True, checks={
                 'mail_container': checks.mail_container,
                 'force_list': checks.force_list,
                 'align': checks.align_mode,
diff --git a/alot/settings/theme.py b/alot/settings/theme.py
index f2a59763..d74cb0e7 100644
--- a/alot/settings/theme.py
+++ b/alot/settings/theme.py
@@ -22,7 +22,7 @@ class Theme(object):
         :raises: :class:`~alot.settings.errors.ConfigError`
         """
         self._spec = os.path.join(DEFAULTSPATH, 'theme.spec')
-        self._config = read_config(path, self._spec,
+        self._config = read_config(path, self._spec, report_extra=True,
                                    checks={'align': checks.align_mode,
                                            'widthtuple': checks.width_tuple,
                                            'force_list': checks.force_list,
diff --git a/alot/settings/utils.py b/alot/settings/utils.py
index 242fa63c..8d656b79 100644
--- a/alot/settings/utils.py
+++ b/alot/settings/utils.py
@@ -5,14 +5,16 @@ from __future__ import absolute_import
 
 import logging
 
-from configobj import ConfigObj, ConfigObjError, flatten_errors
+from configobj import (ConfigObj, ConfigObjError, flatten_errors,
+                       get_extra_values)
 from validate import Validator
 from urwid import AttrSpec
 
 from .errors import ConfigError
 
 
-def read_config(configpath=None, specpath=None, checks=None):
+def read_config(configpath=None, specpath=None, checks=None,
+                report_extra=False):
     """
     get a (validated) config object for given config file path.
 
@@ -23,6 +25,8 @@ def read_config(configpath=None, specpath=None, checks=None):
     :param checks: custom checks to use for validator.
         see `validate docs <http://www.voidspace.org.uk/python/validate.html>`_
     :type checks: dict str->callable,
+    :param report_extra: log if a setting is not present in the spec file
+    :type report_extra: boolean
     :raises: :class:`~alot.settings.errors.ConfigError`
     :rtype: `configobj.ConfigObj`
     """
@@ -65,6 +69,18 @@ def read_config(configpath=None, specpath=None, checks=None):
                     msg = 'section "%s" is missing' % '.'.join(section_list)
                 error_msg += msg + '\n'
             raise ConfigError(error_msg)
+
+        extra_values = get_extra_values(config) if report_extra else None
+        if extra_values:
+            msg = ['Unknown values were found in `%s`. Please check for '
+                   'typos if a specified setting does not seem to work:'
+                   % configpath]
+            for sections, val in extra_values:
+                if sections:
+                    msg.append('%s: %s' % ('->'.join(sections), val))
+                else:
+                    msg.append(str(val))
+            logging.info('\n'.join(msg))
     return config