# GTR014 — from_work_dir whitespace strip (runtime-gated)

**Contract:** behaviour-preserving (crossing-gated).
## Claim
Stripping `from_work_dir` whitespace when a tool crosses 21.09 reproduces what
Galaxy itself did below 21.09.

## Proof — byte-identical to Galaxy's own compatibility shim
`parser/xml.py:596-603`: for `profile < 21.09`,
`output.from_work_dir = output.from_work_dir.strip()` — Galaxy's comment:
*"Prior to quoting, trailing spaces had no effect … ensures that old tools
continue to work."* Applied only under the crossing gate
`baseline < 21.09 <= reached` (codemod §24).