diff -r 1bf1dcbc9950 -r c7abdbc8fd47 mercurial/destutil.py
--- a/mercurial/destutil.py	Tue Oct 20 08:56:00 2020 -0700
+++ b/mercurial/destutil.py	Tue Nov 10 09:14:01 2020 -0800
@@ -405,7 +405,7 @@
     elif default:
         revs = scmutil.revrange(repo, [default])
     else:
-        raise error.Abort(
+        raise error.ConfigError(
             _(b"config option histedit.defaultrev can't be empty")
         )