From 8398a36f13660a041234e7f25c46e2065edfea0a 2016-04-14 14:31:03
From: Thomas Kluyver <thomas@kluyver.me.uk>
Date: 2016-04-14 14:31:03
Subject: [PATCH] Use system_raw in ptshell

Closes gh-9391

We were using system_piped, which runs processes through pexpect. Within
the terminal, we can use system_raw, which lets the child processes
interact directly with the terminal we're running in.

---

diff --git a/IPython/terminal/ptshell.py b/IPython/terminal/ptshell.py
index 114aac8..0ae89ba 100644
--- a/IPython/terminal/ptshell.py
+++ b/IPython/terminal/ptshell.py
@@ -400,5 +400,10 @@ class TerminalInteractiveShell(InteractiveShell):
             return False
         return True
 
+    # Run !system commands directly, not through pipes, so terminal programs
+    # work correctly.
+    system = InteractiveShell.system_raw
+
+
 if __name__ == '__main__':
     TerminalInteractiveShell.instance().interact()