Limit the depth of the search in the string pool.
Limit the depth of the search in the string pool.

Use a better comparison function. (Attributes often have a common
prefix but rarely have a common suffix.)

mapbox/tippecanoe,mapbox/tippecanoe,mapbox/tippecanoe,joykuotw/tippecanoe,joykuotw/tippecanoe,mapbox/tippecanoe