bookmark: allowing to use -t -u with no arg if a bookmark is activated

allowing to use -t -u with no arg if a bookmark is activated

remotenames.py

@@ -873,6 +873,11 @@ def exbookmarks(orig, ui, repo, *args, **opts):
     untrack = opts.get('untrack')
 
     disallowed = set(ui.configlist('remotenames', 'disallowedbookmarks'))
+    # Adds local bookmark if one of the options is called and args is empty
+    if not args and (track or untrack):
+        book = bookmarks.readactive(repo)
+        if book:
+            args = (book,)
 
     if not delete:
         for name in args:

tests/test-bookmarks.t

@@ -0,0 +1,29 @@
+  $ extpath=`dirname $TESTDIR`
+  $ cp $extpath/remotenames.py $TESTTMP # use $TESTTMP substitution in message
+  $ cat >> $HGRCPATH << EOF
+  > [extensions]
+  > remotenames=$TESTTMP/remotenames.py
+  > EOF
+
+Setup repo
+
+  $ hg init repo
+  $ cd repo
+  $ echo 'foo' > a.txt
+  $ hg add a.txt
+  $ hg commit -m 'a'
+
+Testing bookmark options without args
+  $ hg bookmark a
+  $ hg bookmark b
+  $ hg bookmark -v
+     a                         0:2dcb9139ea49
+   * b                         0:2dcb9139ea49
+  $ hg bookmark --track a
+  $ hg bookmark -v
+     a                         0:2dcb9139ea49
+   * b                         0:2dcb9139ea49            [a]
+  $ hg bookmark --untrack
+  $ hg bookmark -v
+     a                         0:2dcb9139ea49
+   * b                         0:2dcb9139ea49