# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1617672266 -7200
# Node ID 8960d8eb747b0a7b057d7f0b02073fae6d14b67c
# Parent  b5858e02e3bab421b6f2c27f02a1e3935f704bc8
filelog: show the passed argument on error

The error now do more than stating what it need. It also state what it got.

diff -r b5858e02e3ba -r 8960d8eb747b mercurial/filelog.py
--- a/mercurial/filelog.py	Tue Apr 06 03:23:46 2021 +0200
+++ b/mercurial/filelog.py	Tue Apr 06 03:24:26 2021 +0200
@@ -240,7 +240,9 @@
     # Used by repo upgrade.
     def clone(self, tr, destrevlog, **kwargs):
         if not isinstance(destrevlog, filelog):
-            raise error.ProgrammingError(b'expected filelog to clone()')
+            msg = b'expected filelog to clone(), not %r'
+            msg %= destrevlog
+            raise error.ProgrammingError(msg)
 
         return self._revlog.clone(tr, destrevlog._revlog, **kwargs)