diff -r 483b5dd0f1aa -r 03a83ace9816 mercurial/ui.py
--- a/mercurial/ui.py	Wed Dec 06 23:33:01 2017 +0100
+++ b/mercurial/ui.py	Wed Dec 06 16:42:24 2017 -0500
@@ -51,6 +51,8 @@
 rollback = False
 # Make `hg status` report copy information
 statuscopies = yes
+# Prefer curses UIs when available. Revert to plain-text with `text`.
+interface = curses
 
 [commands]
 # Make `hg status` emit cwd-relative paths by default.