patch 8.2.0420: Vim9: cannot interrupt a loop with CTRL-C
Problem: Vim9: cannot interrupt a loop with CTRL-C.
Solution: Check for CTRL-C once in a while. Doesn't fully work yet.
diff --git a/src/proto/misc1.pro b/src/proto/misc1.pro
index 1327701..d5fa1fa 100644
--- a/src/proto/misc1.pro
+++ b/src/proto/misc1.pro
@@ -40,6 +40,7 @@
void preserve_exit(void);
void line_breakcheck(void);
void fast_breakcheck(void);
+void veryfast_breakcheck(void);
char_u *get_cmd_output(char_u *cmd, char_u *infile, int flags, int *ret_len);
void f_system(typval_T *argvars, typval_T *rettv);
void f_systemlist(typval_T *argvars, typval_T *rettv);