diff options
Diffstat (limited to 'src/nvim/api/buffer.c')
| -rw-r--r-- | src/nvim/api/buffer.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/nvim/api/buffer.c b/src/nvim/api/buffer.c index da4db60ad6..4a0b8d13d0 100644 --- a/src/nvim/api/buffer.c +++ b/src/nvim/api/buffer.c @@ -474,6 +474,7 @@ void nvim_buf_set_lines(uint64_t channel_id, false); changed_lines((linenr_T)start, 0, (linenr_T)end, (long)extra, true); + fix_cursor((linenr_T)start, (linenr_T)end, (linenr_T)extra); end: for (size_t i = 0; i < new_len; i++) { @@ -1106,6 +1107,26 @@ free_exit: return 0; } +// Check if deleting lines made the cursor position invalid. +// Changed lines from `lo` to `hi`; added `extra` lines (negative if deleted). +static void fix_cursor(linenr_T lo, linenr_T hi, linenr_T extra) +{ + if (curwin->w_cursor.lnum >= lo) { + // Adjust cursor position if it's in/after the changed lines. + if (curwin->w_cursor.lnum >= hi) { + curwin->w_cursor.lnum += extra; + check_cursor_col(); + } else if (extra < 0) { + curwin->w_cursor.lnum = lo; + check_cursor(); + } else { + check_cursor_col(); + } + changed_cline_bef_curs(); + } + invalidate_botline(); +} + // Normalizes 0-based indexes to buffer line numbers static int64_t normalize_index(buf_T *buf, int64_t index, bool *oob) { |