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fix(lua): make vim.str_utfindex and vim.str_byteindex handle NUL bytes

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fixes #16290
This commit is contained in:
bfredl
2022-09-12 11:26:27 +02:00
parent 738c204523
commit 25e4af439f
3 changed files with 13 additions and 8 deletions
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4
src/nvim/mbyte.c
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@@ -1457,7 +1457,7 @@ void mb_utflen(const char_u *s, size_t len, size_t *codepoints, size_t *codeunit
{
size_t count = 0, extra = 0;
size_t clen;
for (size_t i = 0; i < len && s[i] != NUL; i += clen) {
for (size_t i = 0; i < len; i += clen) {
clen = (size_t)utf_ptr2len_len(s + i, (int)(len - i));
// NB: gets the byte value of invalid sequence bytes.
// we only care whether the char fits in the BMP or not
@@ -1479,7 +1479,7 @@ ssize_t mb_utf_index_to_bytes(const char_u *s, size_t len, size_t index, bool us
if (index == 0) {
return 0;
}
for (i = 0; i < len && s[i] != NUL; i += clen) {
for (i = 0; i < len; i += clen) {
clen = (size_t)utf_ptr2len_len(s + i, (int)(len - i));
// NB: gets the byte value of invalid sequence bytes.
// we only care whether the char fits in the BMP or not