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)

/* crypt_zip.c */
int crypt_zip_init(cryptstate_T *state, char_u *key, char_u *salt, int salt_len, char_u *seed, int seed_len);
void crypt_zip_encode(cryptstate_T *state, char_u *from, size_t len, char_u *to, int last);
void crypt_zip_decode(cryptstate_T *state, char_u *from, size_t len, char_u *to, int last);
/* vim: set ft=c : */