From e54372ee6367f5d10158bdd0816c9585fe816f82 2022-02-08 12:00:37
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2022-02-08 12:00:37
Subject: [PATCH] Merge pull request #13518 from Carreau/maint-deprecate-append-to-sys

Maint deprecate append to sys
---

diff --git a/IPython/core/completer.py b/IPython/core/completer.py
index ccb1f46..9774fd5 100644
--- a/IPython/core/completer.py
+++ b/IPython/core/completer.py
@@ -2222,12 +2222,22 @@ class IPCompleter(Completer):
             # initialized, and it takes a user-noticeable amount of time to
             # initialize it, so we don't want to initialize it unless we're
             # actually going to use it.
-            s = text[slashpos+1:]
-            candidates = [x for x in self.unicode_names if x.startswith(s)]
+            s = text[slashpos + 1 :]
+            sup = s.upper()
+            candidates = [x for x in self.unicode_names if x.startswith(sup)]
             if candidates:
                 return s, candidates
-            else:
-                return '', ()
+            candidates = [x for x in self.unicode_names if sup in x]
+            if candidates:
+                return s, candidates
+            splitsup = sup.split(" ")
+            candidates = [
+                x for x in self.unicode_names if all(u in x for u in splitsup)
+            ]
+            if candidates:
+                return s, candidates
+
+            return "", ()
 
         # if text does not start with slash
         else:
diff --git a/IPython/utils/syspathcontext.py b/IPython/utils/syspathcontext.py
index bd1c515..7af1ab6 100644
--- a/IPython/utils/syspathcontext.py
+++ b/IPython/utils/syspathcontext.py
@@ -15,12 +15,21 @@ Authors:
 #-----------------------------------------------------------------------------
 
 import sys
+import warnings
 
 
 class appended_to_syspath(object):
-    """A context for appending a directory to sys.path for a second."""
+    """
+    Deprecated since IPython 8.1, no replacements.
+
+    A context for appending a directory to sys.path for a second."""
 
     def __init__(self, dir):
+        warnings.warn(
+            "`appended_to_syspath` is deprecated since IPython 8.1, and has no replacements",
+            DeprecationWarning,
+            stacklevel=2,
+        )
         self.dir = dir
 
     def __enter__(self):
diff --git a/IPython/utils/tests/test_deprecated.py b/IPython/utils/tests/test_deprecated.py
new file mode 100644
index 0000000..f6f54ce
--- /dev/null
+++ b/IPython/utils/tests/test_deprecated.py
@@ -0,0 +1,7 @@
+from IPython.utils.syspathcontext import appended_to_syspath
+import pytest
+
+
+def test_append_deprecated():
+    with pytest.warns(DeprecationWarning):
+        appended_to_syspath(".")
diff --git a/IPython/utils/version.py b/IPython/utils/version.py
index 0501556..8c65c78 100644
--- a/IPython/utils/version.py
+++ b/IPython/utils/version.py
@@ -14,7 +14,10 @@ It is a bit ridiculous that we need these.
 
 from warnings import warn
 
-warn("The `IPython.utils.version` module has been deprecated since IPython 8.0.")
+warn(
+    "The `IPython.utils.version` module has been deprecated since IPython 8.0.",
+    DeprecationWarning,
+)
 
 
 def check_version(v, check):