From d24c24f9c39c771c382f075d0eb154460b025802 2018-11-01 01:08:21
From: Elliott Morgan Jobson <ElliottJobson@elliotts-mbp-2.attlocal.net>
Date: 2018-11-01 01:08:21
Subject: [PATCH] Updated path completion for long path names to display the completed portion rather than the prefix. Will now elide for long file names as well as long object names.

Issue 11441

---

diff --git a/IPython/terminal/ptutils.py b/IPython/terminal/ptutils.py
index f736752..d8a2365 100644
--- a/IPython/terminal/ptutils.py
+++ b/IPython/terminal/ptutils.py
@@ -24,7 +24,10 @@ _completion_sentinel = object()
 
 def _elide(string, *, min_elide=30):
     """
-    If a string is long enough, and has at least 2 dots,
+    If a string is long enough, and has at least 3 dots,
+    replace the middle part with ellipses.
+
+    If a string naming a file is long enough, and has at least 3 slashes,
     replace the middle part with ellipses.
 
     If three consecutive dots, or two consecutive dots are encountered these are
@@ -36,12 +39,16 @@ def _elide(string, *, min_elide=30):
     if len(string) < min_elide:
         return string
 
-    parts = string.split('.')
+    object_parts = string.split('.')
+    file_parts = string.split('/')
 
-    if len(parts) <= 3:
-        return string
+    if len(object_parts) > 3:
+        return '{}.{}\N{HORIZONTAL ELLIPSIS}{}.{}'.format(parts[0], parts[1][0], parts[-2][-1], parts[-1])
+
+    elif len(file_parts) > 3:
+        return '{}/{}\N{HORIZONTAL ELLIPSIS}{}/{}'.format(parts[0], parts[1][0], parts[-2][-1], parts[-1])
 
-    return '{}.{}\N{HORIZONTAL ELLIPSIS}{}.{}'.format(parts[0], parts[1][0], parts[-2][-1], parts[-1])
+    return string
 
 
 def _adjust_completion_text_based_on_context(text, body, offset):