diff mercurial/obsolete.py @ 32393:f432897a9f49

obsmarker: add an experimental flag controlling "operation" recording

It seems better to introduce the experiment behind a flag for now as there are
multiple concerns around the feature:

 * Storing operation increase the size of obsolescence markers significantly
   (+10-20%).

 * It performs poorly when exchanging markers (cannot combine command names,
   command name might be unknown remotely, etc)

--- a/mercurial/obsolete.py	Fri May 19 19:46:45 2017 -0700
+++ b/mercurial/obsolete.py	Sat May 20 03:10:23 2017 +0200
@@ -1246,7 +1246,10 @@
         metadata = {}
     if 'user' not in metadata:
         metadata['user'] = repo.ui.username()
-    if operation:
+    useoperation = repo.ui.configbool('experimental',
+                                      'evolution.track-operation',
+                                      False)
+    if useoperation and operation:
         metadata['operation'] = operation
     tr = repo.transaction('add-obsolescence-marker')
     try: