# HG changeset patch
# User Kyle Lippincott <spectral@google.com>
# Date 2018-07-16 18:38:56
# Node ID d79f3afb079e66305adf634f513ae65f195824bf
# Parent  c382c19ce9bd5c335beae197e82e7cda2a213eb2

curses: use "text" interface if TERM=dumb

Differential Revision: https://phab.mercurial-scm.org/D3948

diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -1214,7 +1214,7 @@ class ui(object):
                 "Feature %s does not handle all default interfaces" %
                 feature)
 
-        if self.plain():
+        if self.plain() or encoding.environ.get('TERM') == 'dumb':
             return "text"
 
         # Default interface for all the features
diff --git a/tests/test-commit-interactive-curses.t b/tests/test-commit-interactive-curses.t
--- a/tests/test-commit-interactive-curses.t
+++ b/tests/test-commit-interactive-curses.t
@@ -368,6 +368,16 @@ If only the default is set, we'll use th
   $ chunkselectorinterface
   curses
 
+If TERM=dumb, we use text, even if the config says curses
+  $ chunkselectorinterface
+  curses
+  $ TERM=dumb chunkselectorinterface
+  text
+(Something is keeping TERM=dumb in the environment unless I do this, it's not
+scoped to just that previous command like in many shells)
+  $ TERM=xterm chunkselectorinterface
+  curses
+
 It is possible to override the default interface with a feature specific
 interface
   $ cp $HGRCPATH.pretest $HGRCPATH