patch 8.0.1832: cannot use :unlet for an environment variable commit https://github.com/vim/vim/commit/137374fd6538cf9dee0cb22907728d8fdecb5832 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 13 15:59:50 2018 +0200 patch 8.0.1832: cannot use :unlet for an environment variable Problem: Cannot use :unlet for an environment variable. Solution: Make it work. Use unsetenv() if available. (Ken Takata, closes #2855)

/* hangulin.c */
int hangul_input_state_get(void);
void hangul_input_state_set(int state);
int im_get_status(void);
void hangul_input_state_toggle(void);
void hangul_keyboard_set(void);
int hangul_input_process(char_u *s, int len);
void hangul_input_clear(void);
char_u *hangul_string_convert(char_u *buf, int *p_len);
char_u *hangul_composing_buffer_get(int *p_len);
/* vim: set ft=c : */