patch 8.1.1837: popup test fails if clipboard is supported but not working commit https://github.com/vim/vim/commit/4999a7fb6585915b53888c930067b33c01674678 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 10 22:21:48 2019 +0200 patch 8.1.1837: popup test fails if clipboard is supported but not working Problem: Popup test fails if clipboard is supported but not working. Solution: Add the "clipboard_working" feature. Also use Check commands instead of "if" and "throw". And remove stray ch_logfile().

--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -6629,6 +6629,10 @@ f_has(typval_T *argvars, typval_T *rettv
 	else if (STRICMP(name, "conpty") == 0)
 	    n = use_conpty();
 #endif
+#ifdef FEAT_CLIPBOARD
+	else if (STRICMP(name, "clipboard_working") == 0)
+	    n = clip_star.available;
+#endif
     }
 
     rettv->vval.v_number = n;