/GrADS/script/find.gsf

ret = find( str_base, str_target )

test.gs

rc = gsfallow( 'on' )
str = 'Tokyo Ueno Oomiya Sendai Morioka'
say find( str, 'Sendai' )
say find( str, 'Utsunomiya' )
ga-> test
19

-1