# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 2021-02-11 23:02:57
# Node ID 8ad2f43fe37bdf1cc14337d63d0948183dffd824
# Parent  7001f92e0ee95f17fea0bb0d0f1cd1d6c3c9d11e

rewriteutil: add devel warning if precheck is called with contexts

I'm trying to upstream parts from the evolve extension. This check
exists there.

Differential Revision: https://phab.mercurial-scm.org/D10515

diff --git a/mercurial/rewriteutil.py b/mercurial/rewriteutil.py
--- a/mercurial/rewriteutil.py
+++ b/mercurial/rewriteutil.py
@@ -21,6 +21,7 @@ from . import (
     obsutil,
     revset,
     scmutil,
+    util,
 )
 
 
@@ -38,6 +39,10 @@ def precheck(repo, revs, action=b'rewrit
         hint = _(b"no changeset checked out")
         raise error.InputError(msg, hint=hint)
 
+    if any(util.safehasattr(r, 'rev') for r in revs):
+        repo.ui.develwarn(b"rewriteutil.precheck called with ctx not revs")
+        revs = (r.rev() for r in revs)
+
     if len(repo[None].parents()) > 1:
         raise error.StateError(_(b"cannot %s while merging") % action)