It round-tripped the pruned text through a shell variable, and command
substitution strips every trailing newline while printf added exactly one
back, so any file whose pruned output ended in more than one blank line
diffed against a reshaped copy of itself. Comparing files directly instead
brings review.sh to 270 removals across 118 files, matching validate.py,
which derives the same number from the drop set rather than from a diff.
The counting was wrong too: a removed `- [x] foo` is `-- [x] foo` in a
unified diff, so the `^-[^-]` pattern skipped every checkbox it was meant
to be counting.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PU5ZFfQFtDTFqqhvMTWdGH
