From 29ea05f5bb332fdb9bd660e85877d96bc8b8104b Mon Sep 17 00:00:00 2001
From: Michael Lazar <michael.lazar.ctr@dren.hpc.mil>
Date: Sat, 4 Nov 2017 15:20:58 -0400
Subject: [PATCH] Adding support for emacs terminals

---
 rtv/page.py             | 4 +++-
 tests/test_subreddit.py | 5 +++++
 tests/test_terminal.py  | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/rtv/page.py b/rtv/page.py
index 134774c..712cbd6 100644
--- a/rtv/page.py
+++ b/rtv/page.py
@@ -367,7 +367,9 @@ class Page(object):
         else:
             title = sub_name
 
-        if os.getenv('DISPLAY'):
+        # Setting the terminal title will break emacs or systems without
+        # X window.
+        if os.getenv('DISPLAY') and not os.getenv('INSIDE_EMACS'):
             title += ' - rtv {0}'.format(__version__)
             title = self.term.clean(title)
             if six.PY3:
diff --git a/tests/test_subreddit.py b/tests/test_subreddit.py
index 8d74ac9..f9f1352 100644
--- a/tests/test_subreddit.py
+++ b/tests/test_subreddit.py
@@ -108,6 +108,11 @@ def test_subreddit_title(subreddit_page, terminal, capsys):
         out, _ = capsys.readouterr()
         assert not out
 
+    with mock.patch.dict('os.environ', {'INSIDE_EMACS': '25.3.1,term:0.96'}):
+        subreddit_page.draw()
+        out, _ = capsys.readouterr()
+        assert not out
+
 
 def test_subreddit_search(subreddit_page, terminal):
     window = terminal.stdscr.subwin
diff --git a/tests/test_terminal.py b/tests/test_terminal.py
index 52950e7..935535b 100644
--- a/tests/test_terminal.py
+++ b/tests/test_terminal.py
@@ -600,6 +600,7 @@ def test_set_theme(terminal, stdscr):
 
 def test_set_theme_no_colors(terminal, stdscr):
 
+    # Monochrome should be forced if the terminal doesn't support color
     with mock.patch('curses.has_colors') as has_colors:
         has_colors.return_value = False