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vim-patch:9.1.1607: :apple command detected as :append (#35237)

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Problem:  :apple command detected as :append (dai475694450)
Solution: Disallow to define a custom command with lower-case letter,
          correctly detect :insert/:change/:append ex commands
          (Hirohito Higashi).

fixes: vim/vim#17893
closes: vim/vim#17930

efd83d441b

Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>
This commit is contained in:
zeertzjq
2025-08-08 21:58:55 +08:00
committed by GitHub
parent 798cb0f19a
commit e7dfbf1343
2 changed files with 53 additions and 12 deletions
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19
src/nvim/eval/userfunc.c
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@@ -2500,19 +2500,14 @@ static int get_function_body(exarg_T *eap, garray_T *newlines, char *line_arg_in
}
// Check for ":append", ":change", ":insert".
p = skip_range(p, NULL);
if ((p[0] == 'a' && (!ASCII_ISALPHA(p[1]) || p[1] == 'p'))
|| (p[0] == 'c'
&& (!ASCII_ISALPHA(p[1])
|| (p[1] == 'h' && (!ASCII_ISALPHA(p[2])
|| (p[2] == 'a'
&& (strncmp(&p[3], "nge", 3) != 0
|| !ASCII_ISALPHA(p[6])))))))
|| (p[0] == 'i'
&& (!ASCII_ISALPHA(p[1]) || (p[1] == 'n'
&& (!ASCII_ISALPHA(p[2])
|| (p[2] == 's')))))) {
char *const tp = p = skip_range(p, NULL);
if ((checkforcmd(&p, "append", 1)
|| checkforcmd(&p, "change", 1)
|| checkforcmd(&p, "insert", 1))
&& (*p == '!' || *p == '|' || ascii_iswhite_nl_or_nul(*p))) {
skip_until = xmemdupz(".", 1);
} else {
p = tp;
}
// heredoc: Check for ":python <<EOF", ":lua <<EOF", etc.