patch 8.1.1423: popup windows use options from current window and buffer
Problem: Popup windows use options from current window and buffer.
Solution: Clear all local options when creating a popup window.
diff --git a/src/proto/option.pro b/src/proto/option.pro
index 4a0da1c..49b2b65 100644
--- a/src/proto/option.pro
+++ b/src/proto/option.pro
@@ -2,6 +2,7 @@
void set_init_1(int clean_arg);
void set_string_default(char *name, char_u *val);
void set_number_default(char *name, long val);
+void set_local_options_default(win_T *wp);
void free_all_options(void);
void set_init_2(void);
void set_init_3(void);