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fix(api): fix inconsistent behavior of topline touched in recent refactor

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The change in #24824 0081549 was not a regression, however it was an
incomplete change. Unfortunately some common plugins come to depend on
this exising self-inconsistent behavior. These plugins are going to need
to update for 0.10

nvim_buf_set_lines used to NOT adjust the topline correctly if a buffer
was displayed in just one window. However, if displayed in multiple
windows, it was correctly adjusted for any window not deemed the
current window for the buffer (which could be an arbitrary choice if the
buffer was not already current, as noted in the last rafactor)

This fixes so that all windows have their topline adjusted. The added
tests show this behavior, which should be the reasonable one.
This commit is contained in:
bfredl
2023-08-27 11:20:59 +02:00
parent b7d5b55f74
commit 9b9030ff2c
3 changed files with 289 additions and 21 deletions
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10
src/nvim/api/buffer.c
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@@ -472,9 +472,11 @@ void nvim_buf_set_lines(uint64_t channel_id, Buffer buffer, Integer start, Integ
kExtmarkUndo);
changed_lines(buf, (linenr_T)start, 0, (linenr_T)end, (linenr_T)extra, true);
if (curwin->w_buffer == buf) {
// mark_adjust_buf handles non-current windows
fix_cursor(curwin, (linenr_T)start, (linenr_T)end, (linenr_T)extra);
FOR_ALL_TAB_WINDOWS(tp, win) {
if (win->w_buffer == buf) {
fix_cursor(win, (linenr_T)start, (linenr_T)end, (linenr_T)extra);
}
}
end:
@@ -710,7 +712,7 @@ void nvim_buf_set_text(uint64_t channel_id, Buffer buffer, Integer start_row, In
// changed range, and move any in the remainder of the buffer.
// Do not adjust any cursors. need to use column-aware logic (below)
mark_adjust_buf(buf, (linenr_T)start_row, (linenr_T)end_row, MAXLNUM, (linenr_T)extra,
true, false, kExtmarkNOOP);
true, true, kExtmarkNOOP);
extmark_splice(buf, (int)start_row - 1, (colnr_T)start_col,
(int)(end_row - start_row), col_extent, old_byte,