libtmux.neo._split_records

tmux writes one record per line, but any format value may itself contain a newline -- pane_current_path for a directory whose name has one -- and that splits the record across output lines. Iterating lines then hands parse_output a fragment with too few values, which its strict zip rejects, so one directory breaks every object on the server rather than the one pane in it.

Regrouping on the separator is exact rather than merely better: the template from get_output_format terminates *every* field with a separator, so one record holds exactly field_count of them and a newline is never one. Nothing is split on newlines, so a value may contain any number of them, in any position.