patch 9.0.1199: crash when using kitty and using a mapping with <Esc> Commit: https://github.com/vim/vim/commit/584b853ee034754edd278d15f2966ac3d8c9d72c Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 14 21:07:07 2023 +0000 patch 9.0.1199: crash when using kitty and using a mapping with <Esc> Problem: Crash when using kitty and using a mapping with <Esc>. Solution: Do not try setting did_simplify when it is NULL. (closes https://github.com/vim/vim/issues/11817)

/* textformat.c */
int has_format_option(int x);
void internal_format(int textwidth, int second_indent, int flags, int format_only, int c);
void auto_format(int trailblank, int prev_line);
void check_auto_format(int end_insert);
int comp_textwidth(int ff);
void op_format(oparg_T *oap, int keep_cursor);
void op_formatexpr(oparg_T *oap);
int fex_format(linenr_T lnum, long count, int c);
void format_lines(linenr_T line_count, int avoid_fex);
/* vim: set ft=c : */