diff options
Diffstat (limited to 'buffer.c')
| -rw-r--r-- | buffer.c | 14 |
1 files changed, 10 insertions, 4 deletions
@@ -616,7 +616,9 @@ static bool buffer_edit_does_anything(TextBuffer *buffer, BufferEdit *edit) { } // has enough time passed since the last edit that we should create a new one? -static bool buffer_edit_split(TextBuffer *buffer) { +// +// is_deletion should be set to true if the edit involves any deletion. +static bool buffer_edit_split(TextBuffer *buffer, bool is_deletion) { BufferEdit *last_edit = arr_lastp(buffer->undo_history); if (!last_edit) return true; if (buffer->will_chain_edits) return true; @@ -624,7 +626,11 @@ static bool buffer_edit_split(TextBuffer *buffer) { double curr_time = buffer->ted->frame_time; double undo_time_cutoff = buffer_settings(buffer)->undo_save_time; // only keep around edits for this long (in seconds). return last_edit->time <= buffer->last_write_time // last edit happened before buffer write (we need to split this so that undo_history_write_pos works) - || curr_time - last_edit->time > undo_time_cutoff; + || curr_time - last_edit->time > undo_time_cutoff + || (curr_time != last_edit->time && (// if the last edit didn't take place on the same frame, + (last_edit->prev_len && !is_deletion) || // last edit deleted text but this edit inserts text + (last_edit->new_len && is_deletion) // last edit inserted text and this one deletes text + )); } // removes the last edit in the undo history if it doesn't do anything @@ -1574,7 +1580,7 @@ BufferPos buffer_insert_text_at_pos(TextBuffer *buffer, BufferPos pos, String32 i64 where_in_last_edit = last_edit ? buffer_pos_diff(buffer, last_edit->pos, pos) : -1; // create a new edit, rather than adding to the old one if: bool create_new_edit = where_in_last_edit < 0 || where_in_last_edit > last_edit->new_len // insertion is happening outside the previous edit, - || buffer_edit_split(buffer); // or enough time has elapsed/etc to warrant a new one. + || buffer_edit_split(buffer, false); // or enough time has elapsed/etc to warrant a new one. if (create_new_edit) { // create a new edit for this insertion @@ -2066,7 +2072,7 @@ void buffer_delete_chars_at_pos(TextBuffer *buffer, BufferPos pos, i64 nchars_) !last_edit || // if there is no previous edit to combine it with buffer_pos_cmp(del_end, edit_start) < 0 || // or if delete does not overlap last_edit buffer_pos_cmp(del_start, edit_end) > 0 || - buffer_edit_split(buffer); // or if enough time has passed to warrant a new edit + buffer_edit_split(buffer, true); // or if enough time has passed to warrant a new edit if (create_new_edit) { // create a new edit |