On master branch for sbase, it seems that on the seq command the format string (option -f) is having the first character clipped off. Sample below.
./seq -f "%04g" 3 04g 04g 04g ./seq -f " %04g" 3 0001 0002 0003 Printing the format string in validfmt() shows that it is correct. Printing after 'fmt = ARGF();' in line 33 shows clipped format. I have no idea how ARGF works and cannot troubleshoot past that. Thanks.