patch 8.2.1308: Vim9: accidentally using "x" causes Vim to exit
Problem: Vim9: accidentally using "x" causes Vim to exit.
Solution: Disallow using ":x" or "xit" in Vim9 script. (closes #6399)
diff --git a/src/proto/vim9script.pro b/src/proto/vim9script.pro
index 6a32abd..f8b12ee 100644
--- a/src/proto/vim9script.pro
+++ b/src/proto/vim9script.pro
@@ -1,6 +1,7 @@
/* vim9script.c */
int in_vim9script(void);
void ex_vim9script(exarg_T *eap);
+int not_in_vim9(exarg_T *eap);
void ex_export(exarg_T *eap);
void free_imports(int sid);
void ex_import(exarg_T *eap);