Parse the --gps <lat>,<lon>[,<altitude>[,<altitude-type>]] combined-flag
shape (lat-first — see module doc-comment). Requires 2-4 non-empty
comma-separated parts, throwing input/incomplete-gps otherwise. A missing
altitude-type in the 3-part form defaults to MSL.
Parse the
--gps <lat>,<lon>[,<altitude>[,<altitude-type>]]combined-flag shape (lat-first — see module doc-comment). Requires 2-4 non-empty comma-separated parts, throwinginput/incomplete-gpsotherwise. A missing altitude-type in the 3-part form defaults toMSL.