Fix clipboard contents sometimes failing to clear

Former-commit-id: 8ecbbb6199864fda973e47605a10d737318f3993
Former-commit-id: eb625eded3f9518967ee9fa06201311e8571e394

lib/clipclear.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+from hashlib import sha512
+from subprocess import PIPE, run
+from sys import argv
+from time import sleep
+
+# set period of time to wait before attempting to clear clipboard
+sleep(30)
+
+# store a hash of the current clipboard contents for later comparison
+_hash_paste = sha512()
+_hash_paste.update(run('wl-paste', stdout=PIPE).stdout.strip())
+
+# if the supplied hash matches the hash of the current clipboard contents, clear the clipboard
+if argv[1] == _hash_paste.hexdigest():
+    if argv[2] == 'wsl':
+        run(('powershell.exe', '-c', 'Set-Clipboard'))
+    elif argv[2] == 'wayland':
+        run(('wl-copy', '-c'))
+    elif argv[2] == 'haiku':
+        run(('clipboard', '-r'))
+    elif argv[2] == 'mac':
+        run('pbcopy', input=b'')
+    elif argv[2] == 'termux':
+        run(("termux-clipboard-set", "''"))
+    elif argv[2] == 'x11':
+        run(('xclip', '-i', '/dev/null', '-sel', 'c'))