--- a/mercurial/ui.py	Sat Nov 07 21:50:28 2020 -0800
+++ b/mercurial/ui.py	Wed Oct 21 19:00:16 2020 -0700
@@ -60,6 +60,8 @@
 # The config knobs that will be altered (if unset) by ui.tweakdefaults.
 tweakrc = b"""
 [ui]
+# Gives detailed exit codes for input/user errors, config errors, etc.
+detailed-exit-code = True
 # The rollback command is dangerous. As a rule, don't use it.
 rollback = False
 # Make `hg status` report copy information