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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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14
src/nvim/change.c
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@@ -1597,7 +1597,7 @@ int open_line(
if (curwin->w_cursor.lnum + 1 < curbuf->b_ml.ml_line_count
|| curwin->w_p_diff) {
mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L,
kExtmarkUndo);
kExtmarkNOOP);
}
did_append = true;
} else {
@@ -1611,6 +1611,7 @@ int open_line(
}
ml_replace(curwin->w_cursor.lnum, p_extra, true);
changed_bytes(curwin->w_cursor.lnum, 0);
// TODO: extmark_splice_cols here??
curwin->w_cursor.lnum--;
did_append = false;
}
@@ -1691,8 +1692,9 @@ int open_line(
// Always move extmarks - Here we move only the line where the
// cursor is, the previous mark_adjust takes care of the lines after
int cols_added = mincol-1+less_cols_off-less_cols;
extmark_splice(curbuf, (int)lnum-1, mincol-1, 0, less_cols_off,
1, cols_added, kExtmarkUndo);
extmark_splice(curbuf, (int)lnum-1, mincol-1,
0, less_cols_off, less_cols_off,
1, cols_added, 1 + cols_added, kExtmarkUndo);
} else {
changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col);
}
@@ -1704,8 +1706,10 @@ int open_line(
}
if (did_append) {
changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L, true);
extmark_splice(curbuf, (int)curwin->w_cursor.lnum-1,
0, 0, 0, 1, 0, kExtmarkUndo);
// bail out and just get the final lenght of the line we just manipulated
bcount_t extra = (bcount_t)STRLEN(ml_get(curwin->w_cursor.lnum));
extmark_splice(curbuf, (int)curwin->w_cursor.lnum-1, 0,
0, 0, 0, 1, 0, 1+extra, kExtmarkUndo);
}
curbuf_splice_pending--;