diff -r 8f07f5a9c3de -r 21733e8c924f tests/test-legacy-exit-code.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-legacy-exit-code.t	Wed Oct 21 19:00:16 2020 -0700
@@ -0,0 +1,49 @@
+Tests that the exit code is as expected when ui.detailed-exit-code is *not*
+enabled.
+
+  $ cat >> $HGRCPATH << EOF
+  > [ui]
+  > detailed-exit-code=no
+  > EOF
+
+  $ hg init
+  $ echo a > a
+Expect exit code 0 on success
+  $ hg ci -Aqm initial
+
+  $ hg co nonexistent
+  abort: unknown revision 'nonexistent'!
+  [255]
+
+  $ hg co 'none()'
+  abort: empty revision set
+  [255]
+
+  $ hg co 'invalid('
+  hg: parse error at 8: not a prefix: end
+  (invalid(
+           ^ here)
+  [255]
+
+  $ hg co 'invalid('
+  hg: parse error at 8: not a prefix: end
+  (invalid(
+           ^ here)
+  [255]
+
+  $ hg continue
+  abort: no operation in progress
+  [255]
+
+  $ hg st --config a=b
+  abort: malformed --config option: 'a=b' (use --config section.name=value)
+  [255]
+
+  $ echo b > a
+  $ hg ci -m second
+  $ echo c > a
+  $ hg ci -m third
+  $ hg --config extensions.rebase= rebase -r . -d 0 -q
+  warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
+  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
+  [1]