[Gretl-devel] exists() with strings

Dear all, To reproduce <hansl function void testfun (scalar x, int n[1::1],list z[null], string s[null])     isn = exists(n)     print isn    isz = exists(z)    print isz    iss = exists(s)    print iss end function nulldata 1 series z1 = 1 series z2 = 2 list zz = z1 z2 testfun(1) testfun(1,1) testfun(1,1,z1) testfun(1,1,zz) testfun(1,1,zz,"a") hansl> The behavior of exists() with strings is different. The more, there's difference across data types but not across the situations. Is this a bug or I missed something from the help? Oleh