\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:
push +0(0b) mark +0(0b) dup getc dup dup push +1(1b) add push +0(0b) stor retr push +10(4b) sub jzero +1(1b) push +1(1b) add jump +0(0b) mark +1(1b) push +0(0b) mark +2(2b) dup retr dup jzero +3(2b) putc push +1(1b) add jump +2(2b) mark +3(2b) pop pop push +1(1b) sub dup push -1(1b) mul jneg +1(1b)