@param fn Name of the data file corresponding to the index @param fnidx Name of the indexed file @return The index, or NULL if an error occurred
If @p fnidx is NULL, the index name will be derived from @p fn.
Equivalent to tbx_index_load3(fn, fnidx, HTS_IDX_SAVE_REMOTE);
See Implementation
@param fn Name of the data file corresponding to the index @param fnidx Name of the indexed file @return The index, or NULL if an error occurred
If @p fnidx is NULL, the index name will be derived from @p fn.
Equivalent to tbx_index_load3(fn, fnidx, HTS_IDX_SAVE_REMOTE);