different behaviour between IDL and GDL in formatted output

[brandy125]

GDL writes an additional comma at the end if the output is only a single number.

IDL> print,String(FORMAT = '(1(I1, :, ", "))', [1,1])
1,  1
IDL> print,String(FORMAT = '(1(I1, :, ", "))', [1])
1


GDL> print,String(FORMAT = '(1(I1, :, ", "))', [1,1])
1,  1
GDL> print,String(FORMAT = '(1(I1, :, ", "))', [1])
1, 

[GillesDuvert]

Nice finding, a bug!