RosettaCodeData/Task/Run-length-encoding/TMG/run-length-encoding-1.tmg

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loop: ordcop [lch?]\loop;
ordcop: ord/copy;
ord: char(ch)/last [ch!=lch?]\new [cnt++] fail;
new: ( [lch?] parse(out) | () ) [lch=ch] [cnt=1] fail;
out: decimal(cnt) scopy = { 2 1 };
last: parse(out) [lch=0];
copy: smark any(!<<>>);
ch: 0;
lch: 0;
cnt: 0;