[Gretl-users] string substitution with sprintf?

Hi all, I'm trying to write a script that will produce a LaTeX table as output - basically a customized version of tabprint. Here's the basic idea: <hansl> matrix doh = mnormal(1,3) # this would be a coefficient vector, e.g. string fmt = "%.4g " string baz = "doh[1]" loop i=2..cols(doh) # build up the format and argument strings fmt ~= " & %.4g " baz ~= ", doh[$i]" endloop fmt baz sprintf Foo "\"%s\"\n", fmt Foo # this printf is what I want, but I want to use the "fmt" string above printf "%.4g & %.4g & %.4g\n", @baz # this seems like it should work, but I get a "syntax error" sprintf bar Foo, @baz </hansl> I'm still trying to get my head around (s)printf, string substitution, etc., so I'm probably missing something straightforward. Any suggestions welcome! Thanks, PS