Strange code in initdb

What is this trying to tell us?
if (ret == -1)    fprintf(stderr,            _("The program \"postgres\" is needed by %s "           "but was not found
inthe same directory as \"%s\".\n"              "Check your installation.\n"),            progname, progname);else
fprintf(stderr,           _("The program \"postgres\" was found by %s "              "but was not the same version as
\"%s\".\n"             "Check your installation.\n"),            progname, progname);
 

Shouldn't the second progname be argv[0] or something else that contains 
the full path?

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/