From 6f40a985ebeb1a8036f0f84ccf0ddf7579141604 2019-02-18 22:49:34
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2019-02-18 22:49:34
Subject: [PATCH] We need to returned match text only if matches have been found.

If we don't do so, it will not try the next completers.

---

diff --git a/IPython/core/completer.py b/IPython/core/completer.py
index 8181758..1804fce 100644
--- a/IPython/core/completer.py
+++ b/IPython/core/completer.py
@@ -2073,8 +2073,12 @@ class IPCompleter(Completer):
         # if text starts with slash
         if slashpos > -1:
             s = text[slashpos+1:]
-            return s, [x for x in names if x.startswith(s)]
+            candidates = [x for x in names if x.startswith(s)]
+            if candidates:
+                return s, [x for x in names if x.startswith(s)]
+            else:
+                return '', ()
         
         # if text does not start with slash
         else:
-            return u'', []
+            return u'', ()