# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1417729966 28800
# Node ID 4c7ea2d9bad93fc120f3ab84dda0cf023cf7e036
# Parent  0ff6b65afeb05900065ecf4e8f75712d3e513be8
transaction: remove the 'onabort' mechanism

It has no known users. If someones needs similar functionality, a new 'addabort'
method similar to 'addfinalize' should be added.

diff -r 0ff6b65afeb0 -r 4c7ea2d9bad9 mercurial/transaction.py
--- a/mercurial/transaction.py	Thu Dec 04 13:51:41 2014 -0800
+++ b/mercurial/transaction.py	Thu Dec 04 13:52:46 2014 -0800
@@ -84,7 +84,7 @@
 
 class transaction(object):
     def __init__(self, report, opener, vfsmap, journal, after=None,
-                 createmode=None, onabort=None):
+                 createmode=None):
         """Begin a new transaction
 
         Begins a new transaction that allows rolling back writes in the event of
@@ -92,8 +92,6 @@
 
         * `after`: called after the transaction has been committed
         * `createmode`: the mode of the journal file that will be created
-        * `onabort`: called as the transaction is aborting, but before any files
-        have been truncated
         """
         self.count = 1
         self.usages = 1
@@ -105,7 +103,6 @@
         vfsmap[''] = opener  # set default value
         self._vfsmap = vfsmap
         self.after = after
-        self.onabort = onabort
         self.entries = []
         self.map = {}
         self.journal = journal
@@ -436,9 +433,6 @@
         self.file.close()
         self._backupsfile.close()
 
-        if self.onabort is not None:
-            self.onabort()
-
         try:
             if not self.entries and not self._backupentries:
                 if self.journal: