fn parse_baseline_line(line: &str) -> Option<(String, BaselineEntry)>Expand description
The one-line, tab-separated format load_baseline reads and
write_baseline writes: name\troute_nm\telapsed_ms, one
ReferenceRoute per line, blank lines and #-comments ignored.
Hand-rolled rather than reached for a serialisation crate for the
same reason hazards::restricts_entry’s own doc gives for reading
RESTRN codes as digits instead of JSON: three plain fields split on
a tab is not a format worth a dependency to read.