\x09\x09 \x09 \x09 \x09 \x09\x09\x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09\x09 \x09 \x09\x09\x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
mark -1(1b) push +0(1b) mark -0(1b) dup dup getc retr push +10(4b) sub jzero -0(0b) push +1(1b) add jump -0(1b) mark -0(0b) call +0(0b) call +0(0b) jump -1(1b) mark +0(0b) push +0(1b) mark -0(2b) dup retr dup push +10(4b) sub jzero -1(2b) putc push +1(1b) add jump -0(2b) mark -1(2b) push +10(4b) putc ret