patch 9.1.0048: Abort opening cmdwin if autocmds screw things up Commit: https://github.com/vim/vim/commit/43b395ec2e7d24a067d7cb00109818b64da144a5 Author: Sean Dewar <seandewar@users.noreply.github.com> Date: Wed Aug 16 16:17:31 2023 +0100 patch 9.1.0048: Abort opening cmdwin if autocmds screw things up Problem: Autocmds triggered from opening the cmdwin (in win_split and do_ecmd) can cause issues such as E199, as the current checks are insufficient. Solution: Commands executed from the cmdwin apply to the old curwin/buf, so they should be kept in a "suspended" state; abort if they've changed. Also abort if cmdwin/buf was tampered with, and check that curwin is correct. Try to clean up the cmdwin buffer (only if hidden and non-current to simplify things; the same approach is used when closing cmdwin normally), and add a beep. (Sean Dewar) It'd be nice to also check that curwin was *really* created by win_split, as autocommands can change curwin before it returns (so it can't be assumed to be that of the split); for now, this means that the cmdwin may not be the botwin in that case, which is probably OK. closes: #12819 Signed-off-by: Sean Dewar <seandewar@users.noreply.github.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

/* syntax.c */
void syntax_start(win_T *wp, linenr_T lnum);
void syn_stack_free_all(synblock_T *block);
void syn_stack_apply_changes(buf_T *buf);
void syntax_end_parsing(win_T *wp, linenr_T lnum);
int syntax_check_changed(linenr_T lnum);
int get_syntax_attr(colnr_T col, int *can_spell, int keep_state);
void syntax_clear(synblock_T *block);
void reset_synblock(win_T *wp);
void ex_syntax(exarg_T *eap);
void ex_ownsyntax(exarg_T *eap);
int syntax_present(win_T *win);
void reset_expand_highlight(void);
void set_context_in_echohl_cmd(expand_T *xp, char_u *arg);
void set_context_in_syntax_cmd(expand_T *xp, char_u *arg);
char_u *get_syntax_name(expand_T *xp, int idx);
int syn_get_id(win_T *wp, long lnum, colnr_T col, int trans, int *spellp, int keep_state);
int get_syntax_info(int *seqnrp);
int syn_get_sub_char(void);
int syn_get_stack_item(int i);
int syn_get_foldlevel(win_T *wp, long lnum);
void ex_syntime(exarg_T *eap);
char_u *get_syntime_arg(expand_T *xp, int idx);
/* vim: set ft=c : */