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vim-patch:8.2.3925: diff mode confused by NUL bytes (#18033)

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Problem:    Diff mode confused by NUL bytes.
Solution:   Handle NUL bytes differently. (Christian Brabandt, closes vim/vim#9421,
            closes vim/vim#9418)
06f6095623
This commit is contained in:
zeertzjq
2022-04-08 10:45:42 +08:00
committed by GitHub
parent 356baae80a
commit 2c7dc648ca
3 changed files with 174 additions and 4 deletions
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14
src/nvim/diff.c
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@@ -743,11 +743,16 @@ static int diff_write_buffer(buf_T *buf, diffin_T *din)
for (linenr_T lnum = 1; lnum <= buf->b_ml.ml_line_count; lnum++) {
for (char_u *s = ml_get_buf(buf, lnum, false); *s != NUL;) {
if (diff_flags & DIFF_ICASE) {
int c;
char_u cbuf[MB_MAXBYTES + 1];
// xdiff doesn't support ignoring case, fold-case the text.
int c = utf_ptr2char(s);
c = utf_fold(c);
if (*s == NL) {
c = NUL;
} else {
// xdiff doesn't support ignoring case, fold-case the text.
c = utf_ptr2char(s);
c = utf_fold(c);
}
const int orig_len = utfc_ptr2len(s);
if (utf_char2bytes(c, cbuf) != orig_len) {
// TODO(Bram): handle byte length difference
@@ -759,7 +764,8 @@ static int diff_write_buffer(buf_T *buf, diffin_T *din)
s += orig_len;
len += orig_len;
} else {
ptr[len++] = *s++;
ptr[len++] = *s == NL ? NUL : *s;
s++;
}
}
ptr[len++] = NL;