# GTR093 — Upgrade21_09 — collection_type / stdio / has_size (upgrade step)

**Contract:** behaviour-preserving (runtime no-ops).
## Claim
Each 21.09→22.01 repair is a runtime no-op that restores 22.01 validity.

The stdio and Bytes slices are the **G-series** gap-audit items (G1+G3+G5 and
G2 respectively, `../deferred_fix_opportunities.md`); G4 — the only G-series
*decline* — is recorded there, not here (no fixable rule shipped: nameless
groups were runtime-broken, so no behaviour exists to preserve).

## Proof, per slice
- **collection_type comma-token strip** (ledger item A1): Galaxy's runtime strips each comma
  token itself (`DataCollectionToolParameter.__init__`:
  `[t.strip() for t in collection_types.split(",")]`,
  `parameters/basic.py:2717`, unconditional). `""` drops (falsy — identical to
  absent); whitespace-only stays (a matches-nothing restriction — lifting it
  would change behaviour); colon-inner whitespace stays (`type_description.py`
  splits `:` raw — runtime-significant); case stays (exact comparisons).
- **stdio (G1, with G3+G5 folded in):** `range` falls back to the `value` attribute (aliases,
  `parser/xml.py:1248-1250`) ⇒ rename, and a `value` beside `range` is never
  read ⇒ dropped; an `<exit_code>` with neither attr or a blank range, and a
  `<regex>` without `match=` (`:1318-1324`), are logged and **skipped** at
  runtime ⇒ the dead elements are deleted. `RangeType`'s only consumer is
  `ExitCode.range`, and the runtime range parser strips all whitespace.
- **has_size Bytes (G2):** the runtime parser is
  `galaxy.util.bytesize.parse_bytesize` (`upper()` + suffix-table strip +
  `int()`/`float()`): whitespace forms, wrong-case suffixes (`100MI`≡`100Mi`),
  and integral scientific forms (`129e6`≡`129000000`) canonicalize provably;
  plain-`B`/word-suffix forms (`"2 TB"`) are NOT in the suffix table — never
  runtime-working, left alone; non-integral parses left.

## History
Codemod §41 (collection_type, reversing a one-tool corpus decline) + §42 (the
G-series stdio + Bytes additions). 0 corpus incidence for the stdio/Bytes
shapes — novel-tool insurance.