patch 8.2.3916: no error for passing an invalid line number to append() Commit: https://github.com/vim/vim/commit/8dac2acd6a79d571ff5409d9c90b4c9e73237eb4 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Dec 27 20:57:06 2021 +0000 patch 8.2.3916: no error for passing an invalid line number to append() Problem: No error for passing an invalid line number to append(). Solution: In Vim9 script check for a non-negative number. (closes https://github.com/vim/vim/issues/9417)

/* viminfo.c */
int get_viminfo_parameter(int type);
int buf_compare(const void *s1, const void *s2);
void check_marks_read(void);
int read_viminfo(char_u *file, int flags);
void write_viminfo(char_u *file, int forceit);
void ex_viminfo(exarg_T *eap);
/* vim: set ft=c : */