Merge branch 'master' into ls-n

CONTRIBUTING.md

@@ -5,10 +5,6 @@ smoothly into topydo.
 
 ### General
 
-* This Github page defaults to the **stable** branch which is for **bug fixes
-  only**. If you would like to add a new feature, make sure to make a Pull
-  Request on the `master` branch.
-
 * Use descriptive commit messages. The post
   [How to write a commit message](http://chris.beams.io/posts/git-commit/) by
   Chris Beams has some good guidelines.

README.md

@@ -43,6 +43,6 @@ Demo
 [2]: https://github.com/ginatrapani/todo.txt-cli
 [3]: https://github.com/bram85/todo.txt-tools
 [4]: https://github.com/bram85/topydo/wiki
-[5]: https://raw.githubusercontent.com/bram85/topydo/stable/doc/topydo.gif
+[5]: https://raw.githubusercontent.com/bram85/topydo/master/doc/topydo.gif
 [6]: https://github.com/jonathanslenders/python-prompt-toolkit
 [7]: https://github.com/collective/icalendar

test/TestEditCommand.py

@@ -45,24 +45,30 @@ class EditCommandTest(CommandTest):
 
         self.todolist = TodoList(todos)
 
+    @mock.patch('topydo.commands.EditCommand._is_edited')
+    @mock.patch('topydo.commands.EditCommand.EditCommand._todos_from_temp')
     @mock.patch('topydo.commands.EditCommand.EditCommand._open_in_editor')
-    def test_edit1(self, mock_open_in_editor):
+    def test_edit01(self, mock_open_in_editor, mock_todos_from_temp, mock_is_edited):
         """ Preserve dependencies after editing. """
         mock_open_in_editor.return_value = 0
+        mock_todos_from_temp.return_value = [Todo('Foo id:1')]
+        mock_is_edited.return_value = True
 
         command = EditCommand(["1"], self.todolist, self.out, self.error, None)
         command.execute()
 
-        self.assertTrue(self.todolist.is_dirty())
         self.assertEqual(self.errors, "")
+        self.assertTrue(self.todolist.is_dirty())
         self.assertEqual(self.todolist.print_todos(), u("Bar p:1 @test\nBaz @test\nFo\u00f3B\u0105\u017a\nFoo id:1"))
 
+    @mock.patch('topydo.commands.EditCommand._is_edited')
     @mock.patch('topydo.commands.EditCommand.EditCommand._todos_from_temp')
     @mock.patch('topydo.commands.EditCommand.EditCommand._open_in_editor')
-    def test_edit2(self, mock_open_in_editor, mock_todos_from_temp):
+    def test_edit02(self, mock_open_in_editor, mock_todos_from_temp, mock_is_edited):
         """ Edit some todo. """
         mock_open_in_editor.return_value = 0
         mock_todos_from_temp.return_value = [Todo('Lazy Cat')]
+        mock_is_edited.return_value = True
 
         command = EditCommand(["Bar"], self.todolist, self.out, self.error,
                               None)
@@ -72,7 +78,7 @@ class EditCommandTest(CommandTest):
         self.assertEqual(self.errors, "")
         self.assertEqual(self.todolist.print_todos(), u("Foo id:1\nBaz @test\nFo\u00f3B\u0105\u017a\nLazy Cat"))
 
-    def test_edit3(self):
+    def test_edit03(self):
         """ Throw an error after invalid todo number given as argument. """
         command = EditCommand(["FooBar"], self.todolist, self.out, self.error,
                               None)
@@ -81,7 +87,7 @@ class EditCommandTest(CommandTest):
         self.assertFalse(self.todolist.is_dirty())
         self.assertEqual(self.errors, "Invalid todo number given.\n")
 
-    def test_edit4(self):
+    def test_edit04(self):
         """ Throw an error with pointing invalid argument. """
         command = EditCommand(["Bar", "5"], self.todolist, self.out,
                               self.error, None)
@@ -90,22 +96,7 @@ class EditCommandTest(CommandTest):
         self.assertFalse(self.todolist.is_dirty())
         self.assertEqual(self.errors, "Invalid todo number given: 5.\n")
 
-    @mock.patch('topydo.commands.EditCommand.EditCommand._todos_from_temp')
-    @mock.patch('topydo.commands.EditCommand.EditCommand._open_in_editor')
-    def test_edit5(self, mock_open_in_editor, mock_todos_from_temp):
-        """ Don't let to delete todos acidentally while editing. """
-        mock_open_in_editor.return_value = 0
-        mock_todos_from_temp.return_value = [Todo('Only one line')]
-
-        command = EditCommand(["1", "Bar"], self.todolist, self.out,
-                              self.error, None)
-        command.execute()
-
-        self.assertFalse(self.todolist.is_dirty())
-        self.assertEqual(self.errors, "Number of edited todos is not equal to number of supplied todo IDs.\n")
-        self.assertEqual(self.todolist.print_todos(), u("Foo id:1\nBar p:1 @test\nBaz @test\nFo\u00f3B\u0105\u017a"))
-
-    def test_edit6(self):
+    def test_edit05(self):
         """
         Throw an error with invalid argument containing special characters.
         """
@@ -117,12 +108,14 @@ class EditCommandTest(CommandTest):
         self.assertEqual(self.errors,
                          u("Invalid todo number given: Fo\u00d3B\u0105r.\n"))
 
+    @mock.patch('topydo.commands.EditCommand._is_edited')
     @mock.patch('topydo.commands.EditCommand.EditCommand._todos_from_temp')
     @mock.patch('topydo.commands.EditCommand.EditCommand._open_in_editor')
-    def test_edit7(self, mock_open_in_editor, mock_todos_from_temp):
+    def test_edit06(self, mock_open_in_editor, mock_todos_from_temp, mock_is_edited):
         """ Edit todo with special characters. """
         mock_open_in_editor.return_value = 0
         mock_todos_from_temp.return_value = [Todo('Lazy Cat')]
+        mock_is_edited.return_value = True
 
         command = EditCommand([u("Fo\u00f3B\u0105\u017a")], self.todolist,
                               self.out, self.error, None)
@@ -133,13 +126,32 @@ class EditCommandTest(CommandTest):
         self.assertEqual(self.todolist.print_todos(),
                          u("Foo id:1\nBar p:1 @test\nBaz @test\nLazy Cat"))
 
+    @mock.patch('topydo.commands.EditCommand._is_edited')
     @mock.patch('topydo.commands.EditCommand.EditCommand._todos_from_temp')
     @mock.patch('topydo.commands.EditCommand.EditCommand._open_in_editor')
-    def test_edit_expr(self, mock_open_in_editor, mock_todos_from_temp):
+    def test_edit07(self, mock_open_in_editor, mock_todos_from_temp, mock_is_edited):
+        """ Don't perform write if tempfile is unchanged """
+        mock_open_in_editor.return_value = 0
+        mock_todos_from_temp.return_value = [Todo('Only one line')]
+        mock_is_edited.return_value = False
+
+        command = EditCommand(["1", "Bar"], self.todolist, self.out,
+                              self.error, None)
+        command.execute()
+
+        self.assertFalse(self.todolist.is_dirty())
+        self.assertEqual(self.errors, "Editing aborted. Nothing to do.\n")
+        self.assertEqual(self.todolist.print_todos(), u("Foo id:1\nBar p:1 @test\nBaz @test\nFo\u00f3B\u0105\u017a"))
+
+    @mock.patch('topydo.commands.EditCommand._is_edited')
+    @mock.patch('topydo.commands.EditCommand.EditCommand._todos_from_temp')
+    @mock.patch('topydo.commands.EditCommand.EditCommand._open_in_editor')
+    def test_edit_expr(self, mock_open_in_editor, mock_todos_from_temp, mock_is_edited):
         """ Edit todos matching expression. """
         mock_open_in_editor.return_value = 0
         mock_todos_from_temp.return_value = [Todo('Lazy Cat'),
                                              Todo('Lazy Dog')]
+        mock_is_edited.return_value = True
 
         command = EditCommand(["-e", "@test"], self.todolist, self.out,
                               self.error, None)
@@ -147,8 +159,8 @@ class EditCommandTest(CommandTest):
 
         expected = u("|  3| Lazy Cat\n|  4| Lazy Dog\n")
 
-        self.assertTrue(self.todolist.is_dirty())
         self.assertEqual(self.errors, "")
+        self.assertTrue(self.todolist.is_dirty())
         self.assertEqual(self.output, expected)
         self.assertEqual(self.todolist.print_todos(), u("Foo id:1\nFo\u00f3B\u0105\u017a\nLazy Cat\nLazy Dog"))
 

test/TestGetSubCommand.py

+# Topydo - A todo.txt client written in Python.
+# Copyright (C) 2014 - 2015 Bram Schoenmakers <me@bramschoenmakers.nl>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+
+from six import u
+
+from test.TopydoTestCase import TopydoTest
+from topydo.Commands import get_subcommand
+from topydo.commands.AddCommand import AddCommand
+from topydo.commands.DeleteCommand import DeleteCommand
+from topydo.commands.ListCommand import ListCommand
+from topydo.commands.ListProjectCommand import ListProjectCommand
+from topydo.lib.Config import config
+
+class GetSubcommandTest(TopydoTest):
+    def test_normal_cmd(self):
+        args = ["add"]
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, AddCommand))
+
+    def test_cmd_help(self):
+        args = ["help", "add"]
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, AddCommand))
+        self.assertEqual(final_args, ["help"])
+
+    def test_alias(self):
+        config("test/data/aliases.conf")
+
+        args = ["foo"]
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, DeleteCommand))
+        self.assertEqual(final_args, ["-f", "test"])
+
+    def test_default_cmd01(self):
+        args = ["bar"]
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, ListCommand))
+        self.assertEqual(final_args, ["bar"])
+
+    def test_default_cmd02(self):
+        args = []
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, ListCommand))
+        self.assertEqual(final_args, [])
+
+    def test_alias_default_cmd01(self):
+        config("test/data/aliases.conf", {('topydo', 'default_command'): 'foo'})
+
+        args = ["bar"]
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, DeleteCommand))
+        self.assertEqual(final_args, ["-f", "test", "bar"])
+
+    def test_alias_default_cmd02(self):
+        config("test/data/aliases.conf", {('topydo', 'default_command'): 'foo'})
+
+        args = []
+        real_cmd, final_args = get_subcommand(args)
+        self.assertTrue(issubclass(real_cmd, DeleteCommand))
+        self.assertEqual(final_args, ["-f", "test"])
+
+    def test_wrong_alias(self):
+        config("test/data/aliases.conf")
+
+        args = ["baz"]
+        real_cmd, final_args = get_subcommand(args)
+        self.assertEqual(real_cmd, None)
+
+if __name__ == '__main__':
+    unittest.main()

test/data/aliases.conf

+[aliases]
+foo = rm -f test
+baz = FooBar

topydo.conf

@@ -46,3 +46,14 @@ append_parent_contexts      = 0
 ; context_color = magenta
 ; metadata_color = green
 ; link_color = light-cyan
+
+[aliases]
+;showall = ls -x
+;lsproj = lsprj
+;listprj = lsprj
+;listproj = lsprj
+;listproject = lsprj
+;listprojects = lsprj
+;listcon = lscon
+;listcontext = lscon
+;listcontexts = lscon

topydo/Commands.py

@@ -35,15 +35,7 @@ _SUBCOMMAND_MAP = {
     'exit': 'ExitCommand',  # used for the prompt
     'ls': 'ListCommand',
     'lscon': 'ListContextCommand',
-    'listcon': 'ListContextCommand',
-    'listcontext': 'ListContextCommand',
-    'listcontexts': 'ListContextCommand',
     'lsprj': 'ListProjectCommand',
-    'lsproj': 'ListProjectCommand',
-    'listprj': 'ListProjectCommand',
-    'listproj': 'ListProjectCommand',
-    'listproject': 'ListProjectCommand',
-    'listprojects': 'ListProjectCommand',
     'postpone': 'PostponeCommand',
     'pri': 'PriorityCommand',
     'quit': 'ExitCommand',
@@ -53,7 +45,6 @@ _SUBCOMMAND_MAP = {
     'tag': 'TagCommand',
 }
 
-
 def get_subcommand(p_args):
     """
     Retrieves the to-be executed Command and returns a tuple (Command, args).
@@ -80,13 +71,31 @@ def get_subcommand(p_args):
         __import__(modulename, globals(), locals(), [classname], 0)
         return getattr(sys.modules[modulename], classname)
 
+    def resolve_alias(p_alias, p_args):
+        """
+        Resolves a subcommand alias and returns a tuple (Command, args).
+
+        If alias resolves to non-existent command, main help message is
+        returned.
+        """
+        real_subcommand, alias_args = alias_map[p_alias]
+        try:
+            result = import_subcommand(real_subcommand)
+            args = alias_args + p_args
+            return (result, args)
+        except KeyError:
+            return get_subcommand(['help'])
+
     result = None
     args = p_args
+    alias_map = config().aliases()
 
     try:
         subcommand = p_args[0]
 
-        if subcommand in _SUBCOMMAND_MAP:
+        if subcommand in alias_map:
+            result, args = resolve_alias(subcommand, args[1:])
+        elif subcommand in _SUBCOMMAND_MAP:
             result = import_subcommand(subcommand)
             args = args[1:]
         elif subcommand == 'help':
@@ -101,12 +110,16 @@ def get_subcommand(p_args):
                 pass
         else:
             p_command = config().default_command()
-            if p_command in _SUBCOMMAND_MAP:
+            if p_command in alias_map:
+                result, args = resolve_alias(p_command, args)
+            elif p_command in _SUBCOMMAND_MAP:
                 result = import_subcommand(p_command)
                 # leave args unchanged
     except IndexError:
         p_command = config().default_command()
-        if p_command in _SUBCOMMAND_MAP:
+        if p_command in alias_map:
+            result, args = resolve_alias(p_command, args)
+        elif p_command in _SUBCOMMAND_MAP:
             result = import_subcommand(p_command)
 
     return (result, args)

topydo/cli/CLIApplicationBase.py

@@ -101,12 +101,9 @@ except ConfigError as config_error:
     error(str(config_error))
     sys.exit(1)
 
-from topydo.commands.ArchiveCommand import ArchiveCommand
-from topydo.commands.SortCommand import SortCommand
 from topydo.lib import TodoFile
 from topydo.lib import TodoList
 from topydo.lib import TodoListBase
-from topydo.lib.ChangeSet import ChangeSet
 from topydo.lib.Utils import escape_ansi
 
 
@@ -178,6 +175,7 @@ class CLIApplicationBase(object):
             self.backup.add_archive(archive)
 
         if archive:
+            from topydo.commands.ArchiveCommand import ArchiveCommand
             command = ArchiveCommand(self.todolist, archive)
             command.execute()
 
@@ -196,14 +194,21 @@ class CLIApplicationBase(object):
         """
         return input
 
+    def is_read_only(self, p_command):
+        """ Returns True when the given command class is read-only. """
+        read_only_commands = tuple(cmd + 'Command' for cmd in ('Revert', ) +
+                READ_ONLY_COMMANDS)
+        return p_command.__module__.endswith(read_only_commands)
+
     def _execute(self, p_command, p_args):
         """
         Execute a subcommand with arguments. p_command is a class (not an
         object).
         """
-        cmds_wo_backup = tuple(cmd + 'Command' for cmd in ('Revert', ) + READ_ONLY_COMMANDS)
-        if config().backup_count() > 0 and p_command and not p_command.__module__.endswith(cmds_wo_backup):
+        if config().backup_count() > 0 and p_command and not self.is_read_only(p_command):
             call = [p_command.__module__.lower()[16:-7]] + p_args # strip "topydo.commands" and "Command"
+
+            from topydo.lib.ChangeSet import ChangeSet
             self.backup = ChangeSet(self.todolist, p_call=call)
 
         command = p_command(
@@ -232,6 +237,7 @@ class CLIApplicationBase(object):
                 self._archive()
 
             if config().keep_sorted():
+                from topydo.commands.SortCommand import SortCommand
                 self._execute(SortCommand, [])
 
             if self.backup:

topydo/cli/Prompt.py

@@ -99,15 +99,14 @@ class PromptApplication(CLIApplicationBase):
                 sys.exit(0)
 
             mtime_after = _todotxt_mtime()
+            (subcommand, args) = get_subcommand(user_input)
 
-            if self.mtime != mtime_after:
-                # refuse to perform operations such as 'del' and 'do' if the
-                # todo.txt file has been changed in the background.
+            # refuse to perform operations such as 'del' and 'do' if the
+            # todo.txt file has been changed in the background.
+            if not self.is_read_only(subcommand) and self.mtime != mtime_after:
                 error("WARNING: todo.txt file was modified by another application.\nTo prevent unintended changes, this operation was not executed.")
                 continue
 
-            (subcommand, args) = get_subcommand(user_input)
-
             try:
                 if self._execute(subcommand, args) != False:
                     self._post_execute()

topydo/cli/TopydoCompleter.py

@@ -30,7 +30,9 @@ from topydo.lib.RelativeDate import relative_date_to_date
 
 def _subcommands(p_word_before_cursor):
     """ Generator for subcommand name completion. """
-    subcommands = [sc for sc in sorted(_SUBCOMMAND_MAP.keys()) if
+    sc_map = config().aliases()
+    sc_map.update(_SUBCOMMAND_MAP)
+    subcommands = [sc for sc in sorted(sc_map.keys()) if
                    sc.startswith(p_word_before_cursor)]
     for command in subcommands:
         yield Completion(command, -len(p_word_before_cursor))

topydo/commands/EditCommand.py

@@ -33,6 +33,11 @@ DEFAULT_EDITOR = 'vi'
 # cannot use super() inside the class itself
 BASE_TODOLIST = lambda tl: super(TodoList, tl)
 
+def _get_file_mtime(p_file):
+    return os.stat(p_file.name).st_mtime
+
+def _is_edited(p_orig_mtime, p_file):
+    return p_orig_mtime < _get_file_mtime(p_file)
 
 class EditCommand(MultiCommand):
     def __init__(self, p_args, p_todolist, p_output, p_error, p_input):
@@ -105,10 +110,12 @@ class EditCommand(MultiCommand):
         self.printer.add_filter(PrettyPrinterNumbers(self.todolist))
 
         temp_todos = self._todos_to_temp()
+        orig_mtime = _get_file_mtime(temp_todos)
 
         if not self._open_in_editor(temp_todos.name):
             new_todos = self._todos_from_temp(temp_todos)
-            if len(new_todos) == len(self.todos):
+
+            if _is_edited(orig_mtime, temp_todos):
                 for todo in self.todos:
                     BASE_TODOLIST(self.todolist).delete(todo)
 
@@ -116,8 +123,7 @@ class EditCommand(MultiCommand):
                     self.todolist.add_todo(todo)
                     self.out(self.printer.print_todo(todo))
             else:
-                self.error('Number of edited todos is not equal to '
-                           'number of supplied todo IDs.')
+                self.error('Editing aborted. Nothing to do.')
         else:
             self.error(self.usage())
 

topydo/commands/ListCommand.py

@@ -16,8 +16,6 @@
 
 from topydo.lib.Config import config
 from topydo.lib.ExpressionCommand import ExpressionCommand
-from topydo.lib.IcalPrinter import IcalPrinter
-from topydo.lib.JsonPrinter import JsonPrinter
 from topydo.lib.PrettyPrinter import pretty_printer_factory
 from topydo.lib.PrettyPrinterFilter import (PrettyPrinterHideTagFilter,
                                             PrettyPrinterIndentFilter)
@@ -58,9 +56,11 @@ class ListCommand(ExpressionCommand):
                 self.sort_expression = value
             elif opt == '-f':
                 if value == 'json':
+                    from topydo.lib.JsonPrinter import JsonPrinter
                     self.printer = JsonPrinter()
                 elif value == 'ical':
                     if self._poke_icalendar():
+                        from topydo.lib.IcalPrinter import IcalPrinter
                         self.printer = IcalPrinter(self.todolist)
                 else:
                     self.printer = None

topydo/commands/SortCommand.py

@@ -39,8 +39,7 @@ class SortCommand(Command):
         sorter = Sorter(expression)  # TODO: validate
         sorted_todos = sorter.sort(self.todolist.todos())
 
-        self.todolist.erase()
-        self.todolist.add_todos(sorted_todos)
+        self.todolist.replace(sorted_todos)
 
     def usage(self):
         return """Synopsis: sort [expression]"""

topydo/lib/ChangeSet.py

@@ -110,7 +110,7 @@ class ChangeSet(object):
         self._write()
         self.close()
 
-    def delete(self, p_timestamp=None):
+    def delete(self, p_timestamp=None, p_write=True):
         """ Removes backup from the backup file. """
         timestamp = p_timestamp or self.timestamp
         index = self._get_index()
@@ -119,7 +119,9 @@ class ChangeSet(object):
             del self.backup_dict[timestamp]
             index.remove(index[[change[0] for change in index].index(timestamp)])
             self._save_index(index)
-            self._write()
+
+            if p_write:
+                self._write()
         except KeyError:
             pass
 
@@ -143,12 +145,15 @@ class ChangeSet(object):
         """
         Removes oldest backups that exceed the limit configured in backup_count
         option.
+
+        Does not write back to file system, make sure to call self._write()
+        afterwards.
         """
         index = self._get_index()
         backup_limit = config().backup_count() - 1
 
         for changeset in index[backup_limit:]:
-            self.delete(changeset[0])
+            self.delete(changeset[0], p_write=False)
 
     def get_backup(self, p_todolist):
         """

topydo/lib/Config.py

@@ -16,9 +16,9 @@
 
 import os
 
+from six import iteritems
 from six.moves import configparser
 
-
 class ConfigError(Exception):
     def __init__(self, p_text):
         self.text = p_text
@@ -42,6 +42,7 @@ class _Config:
         """
         self.sections = [
             'add',
+            'aliases',
             'colorscheme',
             'dep',
             'ls',
@@ -51,47 +52,71 @@ class _Config:
         ]
 
         self.defaults = {
-            # topydo
-            'default_command': 'ls',
-            'colors': '1',
-            'filename': 'todo.txt',
-            'archive_filename': 'done.txt',
-            'identifiers': 'linenumber',
-            'backup_count': '5',
-
-            # add
-            'auto_creation_date': '1',
-
-            # ls
-            'hide_tags': 'id,p,ical',
-            'indent': 0,
-            'list_limit': '-1',
-
-            # tags
-            'tag_start': 't',
-            'tag_due': 'due',
-            'tag_star': 'star',
-
-            # sort
-            'keep_sorted': '0',
-            'sort_string': 'desc:importance,due,desc:priority',
-            'ignore_weekends': '1',
-
-            # dep
-            'append_parent_projects': '0',
-            'append_parent_contexts': '0',
-
-            # colorscheme
-            'project_color': 'red',
-            'context_color': 'magenta',
-            'metadata_color': 'green',
-            'link_color': 'cyan',
-            'priority_colors': 'A:cyan,B:yellow,C:blue',
+            'topydo': {
+                'default_command': 'ls',
+                'colors': '1',
+                'filename': 'todo.txt',
+                'archive_filename': 'done.txt',
+                'identifiers': 'linenumber',
+                'backup_count': '5',
+            },
+
+            'add': {
+                'auto_creation_date': '1',
+            },
+
+            'ls': {
+                'hide_tags': 'id,p,ical',
+                'indent': '0',
+                'list_limit': '-1',
+            },
+
+            'tags': {
+                'tag_start': 't',
+                'tag_due': 'due',
+                'tag_star': 'star',
+            },
+
+            'sort': {
+                'keep_sorted': '0',
+                'sort_string': 'desc:importance,due,desc:priority',
+                'ignore_weekends': '1',
+            },
+
+            'dep': {
+                'append_parent_projects': '0',
+                'append_parent_contexts': '0',
+            },
+
+            'colorscheme': {
+                'project_color': 'red',
+                'context_color': 'magenta',
+                'metadata_color': 'green',
+                'link_color': 'cyan',
+                'priority_colors': 'A:cyan,B:yellow,C:blue',
+            },
+
+            'aliases': {
+                'lsproj': 'lsprj',
+                'listprj': 'lsprj',
+                'listproj': 'lsprj',
+                'listproject': 'lsprj',
+                'listprojects': 'lsprj',
+                'listcon': 'lscon',
+                'listcontext': 'lscon',
+                'listcontexts': 'lscon',
+            },
         }
 
         self.config = {}
 
-        self.cp = configparser.ConfigParser(self.defaults)
+        self.cp = configparser.ConfigParser()
+
+        for section in self.defaults:
+            self.cp.add_section(section)
+
+            for option, value in iteritems(self.defaults[section]):
+                self.cp.set(section, option, value)
 
         files = [
             "/etc/topydo.conf",
@@ -129,7 +154,7 @@ class _Config:
         try:
             return self.cp.getboolean('topydo', 'colors')
         except ValueError:
-            return self.defaults['colors'] == '1'
+            return self.defaults['topydo']['colors'] == '1'
 
     def todotxt(self):
         return os.path.expanduser(self.cp.get('topydo', 'filename'))
@@ -147,25 +172,25 @@ class _Config:
                 value = 0
             return value
         except ValueError:
-            return int(self.defaults['backup_count'])
+            return int(self.defaults['topydo']['backup_count'])
 
     def list_limit(self):
         try:
             return self.cp.getint('ls', 'list_limit')
         except ValueError:
-            return int(self.defaults['list_limit'])
+            return int(self.defaults['ls']['list_limit'])
 
     def list_indent(self):
         try:
             return self.cp.getint('ls', 'indent')
         except ValueError:
-            return int(self.defaults['indent'])
+            return int(self.defaults['ls']['indent'])
 
     def keep_sorted(self):
         try:
             return self.cp.getboolean('sort', 'keep_sorted')
         except ValueError:
-            return self.defaults['keep_sorted'] == '1'
+            return self.defaults['sort']['keep_sorted'] == '1'
 
     def sort_string(self):
         return self.cp.get('sort', 'sort_string')
@@ -174,19 +199,19 @@ class _Config:
         try:
             return self.cp.getboolean('sort', 'ignore_weekends')
         except ValueError:
-            return self.defaults['ignore_weekends'] == '1'
+            return self.defaults['sort']['ignore_weekends'] == '1'
 
     def append_parent_projects(self):
         try:
             return self.cp.getboolean('dep', 'append_parent_projects')
         except ValueError:
-            return self.defaults['append_parent_projects'] == '1'
+            return self.defaults['dep']['append_parent_projects'] == '1'
 
     def append_parent_contexts(self):
         try:
             return self.cp.getboolean('dep', 'append_parent_contexts')
         except ValueError:
-            return self.defaults['append_parent_contexts'] == '1'
+            return self.defaults['dep']['append_parent_contexts'] == '1'
 
     def _get_tag(self, p_tag):
         try:
@@ -232,7 +257,7 @@ class _Config:
             else:
                 pri_colors_dict = _str_to_dict(pri_colors_str)
         except ValueError:
-            pri_colors_dict = _str_to_dict(self.defaults['priority_colors'])
+            pri_colors_dict = _str_to_dict(self.defaults['colorscheme']['priority_colors'])
 
         return pri_colors_dict
 
@@ -240,31 +265,47 @@ class _Config:
         try:
             return self.cp.get('colorscheme', 'project_color')
         except ValueError:
-            return int(self.defaults['project_color'])
+            return int(self.defaults['colorscheme']['project_color'])
 
     def context_color(self):
         try:
             return self.cp.get('colorscheme', 'context_color')
         except ValueError:
-            return int(self.defaults['context_color'])
+            return int(self.defaults['colorscheme']['context_color'])
 
     def metadata_color(self):
         try:
             return self.cp.get('colorscheme', 'metadata_color')
         except ValueError:
-            return int(self.defaults['metadata_color'])
+            return int(self.defaults['colorscheme']['metadata_color'])
 
     def link_color(self):
         try:
             return self.cp.get('colorscheme', 'link_color')
         except ValueError:
-            return int(self.defaults['link_color'])
+            return int(self.defaults['colorscheme']['link_color'])
 
     def auto_creation_date(self):
         try:
             return self.cp.getboolean('add', 'auto_creation_date')
         except ValueError:
-            return self.defaults['auto_creation_date'] == '1'
+            return self.defaults['add']['auto_creation_date'] == '1'
+
+    def aliases(self):
+        """
+        Returns dict with aliases names as keys and pairs of actual
+        subcommand and alias args as values.
+        """
+        aliases = self.cp.items('aliases')
+        alias_dict = dict()
+
+        for alias, meaning in aliases:
+            meaning = meaning.split()
+            real_subcommand = meaning[0]
+            alias_args = meaning[1:]
+            alias_dict[alias] = (real_subcommand, alias_args)
+
+        return alias_dict
 
 def config(p_path=None, p_overrides=None):
     """