A multi-pass DRY audit could not answer whether it created duplication:
a pass's own shortening can leave two statements identical to a third,
and no per-pass scan sees a copy that did not exist when it ran. The
Librarian retrospective improvised this measure in a scratchpad; this is
it as a tool the DRY Pass process can name.
6-line windows over significant lines (comments, blanks and bare
punctuation dropped, strings folded), grouped by glob or extension.
Revisions are read through git archive, so nothing is checked out.
Stdlib only, so any project can run a scratch copy.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
