diff mercurial/obsolete.py @ 32327:3546a771e376

obsolete: add operation metadata to rebase/amend/histedit obsmarkers

By recording what operation created the obsmarker, we can show very intuitive
messages to the user in various UIs. For instance, log output could have
messages like "Amended as XXX" to show why a commit is old and has an 'x' on it.

     @  ac28e3  durham
    /   First commit
   |
   | o  d4afe7 durham
   | |  Second commit
   | |
   | x  8e9a5d (Amended as ac28e3)  durham
   |/   First commit
   |

--- a/mercurial/obsolete.py	Wed May 17 22:33:15 2017 -0700
+++ b/mercurial/obsolete.py	Tue May 09 16:29:31 2017 -0700
@@ -1203,7 +1203,8 @@
     return divergent
 
 
-def createmarkers(repo, relations, flag=0, date=None, metadata=None):
+def createmarkers(repo, relations, flag=0, date=None, metadata=None,
+                  operation=None):
     """Add obsolete markers between changesets in a repo
 
     <relations> must be an iterable of (<old>, (<new>, ...)[,{metadata}])
@@ -1224,6 +1225,8 @@
         metadata = {}
     if 'user' not in metadata:
         metadata['user'] = repo.ui.username()
+    if operation:
+        metadata['operation'] = operation
     tr = repo.transaction('add-obsolescence-marker')
     try:
         markerargs = []