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api/buffer: add "on_bytes" callback to nvim_buf_attach

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This implements byte-resolution updates of buffer changes.
Note: there is no promise that the buffer state is valid inside
the callback!
This commit is contained in:
Björn Linse
2020-02-29 15:27:17 +01:00
parent 81fa107f59
commit bc86f76c0a
13 changed files with 280 additions and 125 deletions
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13
src/nvim/memline.c
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@@ -2405,12 +2405,13 @@ void ml_add_deleted_len_buf(buf_T *buf, char_u *ptr, ssize_t len)
if (len == -1) {
len = STRLEN(ptr);
}
buf->deleted_bytes += len+1;
if (buf->update_need_codepoints) {
mb_utflen(ptr, len, &buf->deleted_codepoints,
&buf->deleted_codeunits);
buf->deleted_codepoints++; // NL char
buf->deleted_codeunits++;
curbuf->deleted_bytes += len+1;
curbuf->deleted_bytes2 += len+1;
if (curbuf->update_need_codepoints) {
mb_utflen(ptr, len, &curbuf->deleted_codepoints,
&curbuf->deleted_codeunits);
curbuf->deleted_codepoints++; // NL char
curbuf->deleted_codeunits++;
}
}