D1179: amend: error out if the note is greater than 255bytes

[pulkit (Pulkit Goyal)]

pulkit created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REVISION SUMMARY
  In obsmarker we can't store keys and values of more than 255 bytes in metadata.
  If we try to do so, ProgrammingError is raised. The note flag to amend stores
  the note in obsmetadata. If a user will try to store a larger note, he will
  encounter ProgrammingError which is wrong. We must error out early.
  
  Thanks to Yuya for warning about this.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1179

AFFECTED FILES
  hgext/amend.py
  tests/test-amend.t

CHANGE DETAILS

diff --git a/tests/test-amend.t b/tests/test-amend.t
--- a/tests/test-amend.t
+++ b/tests/test-amend.t
@@ -198,6 +198,9 @@
 
   $ echo foo > bar
   $ hg add bar
+  $ hg amend --note 'yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy'
+  abort: cannot store a note of more than 255 bytes
+  [255]
   $ hg amend --note "adding bar"
   $ hg debugobsolete -r .
   112478962961147124edd43549aedd1a335e44bf be169c7e8dbe21cd10b3d79691cbe7f241e3c21c 0 (Thu Jan 01 00:00:00 1970 +0000) {'operation': 'amend', 'user': 'test'}
diff --git a/hgext/amend.py b/hgext/amend.py
--- a/hgext/amend.py
+++ b/hgext/amend.py
@@ -16,6 +16,7 @@
 from mercurial import (
     cmdutil,
     commands,
+    error,
     registrar,
 )
 
@@ -45,6 +46,8 @@
 
     See :hg:`help commit` for more details.
     """
+    if len(opts['note']) > 255:
+        raise error.Abort(_("cannot store a note of more than 255 bytes"))
     with repo.wlock(), repo.lock():
         if not opts.get('logfile'):
             opts['message'] = opts.get('message') or repo['.'].description()



To: pulkit, #hg-reviewers
Cc: mercurial-devel