Added code to set can_clip to False on Linux if can't copy/paste clipboard

If Pyperclip could not find a copy/paste mechanism for your system, then
cmd2.can_clip gets set to False.

If cmd2.can_clip is False, then the "send_to_paste_buffer" test gets skipped.

1 files changed, 6 insertions, 1 deletions

diff --git a/cmd2.py b/cmd2.py
index cbb98ec7..97160515 100755
--- a/cmd2.py
+++ b/cmd2.py
@@ -303,8 +303,13 @@ def options(option_list, arg_desc="arg"):
     return option_setup
 
 
-# Can we access the clipboard?
+# Can we access the clipboard, always true on Windows and Mac, but only sometimes on Linux
 can_clip = True
+if sys.platform == 'linux':
+    try:
+        pyperclip.paste()
+    except pyperclip.exceptions.PyperclipException:
+        can_clip = False
 
 
 def get_paste_buffer():