fixed bug in attach cmds

pubs/commands/attach_cmd.py

@@ -2,14 +2,15 @@ from .. import repo
 from .. import color
 from ..configs import config
 from ..uis import get_ui
+from .. import content
 
 def parser(subparsers):
     parser = subparsers.add_parser('attach',
             help='attach a document to an existing paper')
-    parser.add_argument('-c', '--copy', action='store_true', default=None,
-            help="copy document files into library directory (default)")
-    parser.add_argument('-C', '--nocopy', action='store_false', dest='copy',
-            help="don't copy document files (opposite of -c)")
+    # parser.add_argument('-c', '--copy', action='store_true', default=True,
+    #         help="copy document files into library directory (default)")
+    parser.add_argument('-L', '--link', action='store_false', dest='copy', default=True,
+            help="don't copy document files, just create a link.")
     parser.add_argument('citekey',
             help='citekey of the paper')
     parser.add_argument('document',
@@ -30,10 +31,10 @@ def command(args):
 
     try:
         document = args.document
-        document = rp.push_doc(paper.citekey, document, copy=args.copy)
+        rp.push_doc(paper.citekey, document, copy=args.copy)
         if args.copy:
             if ui.input_yn('{} has been copied into pubs; should the original be removed?'.format(color.dye(document, color.bold))):
-                content.remove_file(docfile)
+                content.remove_file(document)
         ui.print_('{} attached to {}'.format(color.dye(document, color.bold), color.dye(paper.citekey, color.citekey)))
 
     except ValueError as v: