renamed tags command into tag

papers/commands/__init__.py

@@ -8,6 +8,6 @@ import open_cmd
 import edit_cmd
 import remove_cmd
 import websearch_cmd
-import tags_cmd
+import tag_cmd
 import attach_cmd
 import update_cmd

papers/commands/tag_cmd.py

@@ -19,7 +19,7 @@ from ..repo import Repository, InvalidReference
 from . import helpers
 
 def parser(subparsers, config):
-    parser = subparsers.add_parser('tags', help="add, remove and show tags")
+    parser = subparsers.add_parser('tag', help="add, remove and show tags")
     parser.add_argument('referenceOrTag', nargs='?', default = None,
                         help='reference to the paper (citekey or number), or '
                              'tag.')

papers/papers

@@ -10,19 +10,19 @@ from papers import configs
 from papers import commands
 
 cmds = collections.OrderedDict([
-        ('init', commands.init_cmd),
-        ('add', commands.add_cmd),
+        ('init',        commands.init_cmd),
+        ('add',         commands.add_cmd),
         ('add_library', commands.add_library_cmd),
-        ('import', commands.import_cmd),
-        ('export', commands.export_cmd),
-        ('list', commands.list_cmd),
-        ('edit', commands.edit_cmd),
-        ('remove', commands.remove_cmd),
-        ('open', commands.open_cmd),
-        ('websearch', commands.websearch_cmd),
-        ('tags', commands.tags_cmd),
-        ('attach', commands.attach_cmd),
-        ('update', commands.update_cmd),
+        ('import',      commands.import_cmd),
+        ('export',      commands.export_cmd),
+        ('list',        commands.list_cmd),
+        ('edit',        commands.edit_cmd),
+        ('remove',      commands.remove_cmd),
+        ('open',        commands.open_cmd),
+        ('websearch',   commands.websearch_cmd),
+        ('tag',         commands.tag_cmd),
+        ('attach',      commands.attach_cmd),
+        ('update',      commands.update_cmd),
         ])
 
 config = configs.read_config()