issue#13073: Made a couple of fixes after testing on Wayland (Gnome)

IPython/lib/clipboard.py

@@ -1,14 +1,16 b''
 """ Utilities for accessing the platform's clipboard.
 """
-
+import os
 import subprocess
 
 from IPython.core.error import TryNext
 import IPython.utils.py3compat as py3compat
 
+
 class ClipboardEmpty(ValueError):
     pass
 
+
 def win32_clipboard_get():
     """ Get the current clipboard's text on Windows.
 
@@ -32,6 +34,7 b' def win32_clipboard_get():'
         win32clipboard.CloseClipboard()
     return text
 
+
 def osx_clipboard_get() -> str:
     """ Get the clipboard's text on OS X.
     """
@@ -43,6 +46,7 b' def osx_clipboard_get() -> str:'
     text = py3compat.decode(bytes_)
     return text
 
+
 def tkinter_clipboard_get():
     """ Get the clipboard's text using Tkinter.
 
@@ -77,13 +81,18 b' def wayland_clipboard_get():'
 
     try:
         with subprocess.Popen(["wl-paste"], stdout=subprocess.PIPE) as p:
-            raw, _ = p.communicate()
+            raw, err = p.communicate()
+            if p.wait():
+                raise TryNext(err)
     except FileNotFoundError as e:
-        raise ClipboardEmpty(
+        raise TryNext(
             "Getting text from the clipboard under Wayland requires the wl-clipboard "
             "extension: https://github.com/bugaevc/wl-clipboard"
         ) from e
 
+    if not raw:
+        raise ClipboardEmpty
+
     try:
         text = py3compat.decode(raw)
     except UnicodeDecodeError as e: