Fix merge/rebase abort

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/models/subproject.py

@@ -692,7 +692,7 @@ class SubProject(models.Model, PercentMixin, URLMixin, PathMixin):
                 # In case merge has failer recover
                 status = self.repository.status()
                 error = str(error)
-                method('--abort')
+                method(abort=True)
 
         # Log error
         weblate.logger.warning(

weblate/trans/vcs.py

@@ -126,13 +126,13 @@ class Repository(object):
         """
         raise NotImplementedError()
 
-    def merge(self, branch):
+    def merge(self, branch=None, abort=False):
         """
         Merges remote branch into working copy.
         """
         raise NotImplementedError()
 
-    def rebase(self, branch):
+    def rebase(self, branch=None, abort=False):
         """
         Rebases working copy on top of remote branch.
         """
@@ -268,16 +268,22 @@ class GitRepository(Repository):
         """
         self.execute(['reset', '--hard', 'origin/{0}'.format(branch)])
 
-    def rebase(self, branch):
+    def rebase(self, branch=None, abort=False):
         """
         Rebases working copy on top of remote branch.
         """
+        if abort:
+            self.execute(['rebase', '--abort'])
+        else:
             self.execute(['rebase', 'origin/{0}'.format(branch)])
 
-    def merge(self, branch):
+    def merge(self, branch=None, abort=False):
         """
         Resets working copy to match remote branch.
         """
+        if abort:
+            self.execute(['merge', '--abort'])
+        else:
             self.execute(['merge', 'origin/{0}'.format(branch)])
 
     def needs_commit(self, filename=None):