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Summary

JSON GENERATE takes CONVERTING item TO [JSON] BOOLEAN | BOOL USING condition-name | literal [ALSO ...] (IBM Enterprise COBOL 6.4 LR, converting phrase format 1). A value matching the 88 (directly under the item) or the single-byte literal is written true, any other value false. Translated as a runtime boolean from the existing comparison / condition-name test (JsonGenerate.bool). Oracle-unbacked (X76, ASSUMED): no L2+ claim.

Refused by name: item not one-byte PIC X, an 88 not directly under it, a literal longer than one byte, an item inside a table, the same item in SUPPRESS ... WHEN / EVERY (IBM states none of these), and TO JSON NULL (format 2).

Stacked on #7947 (COMP-1, same files); merge #7947 first, then retarget to main.

Checklist: partial [c:bb8e1760] -- CONVERTING ... TO JSON NULL (format 2) is left; COMP-2, an elementary source, an ODO table inside a table and NAME OMITTED on a member stay refused because IBM is silent or calls them illegal

Class

JSON GENERATE phrases IBM defines that the det translator still holed. Sweep: COUNT, NAME (incl. OMITTED on the source), SUPPRESS / WHEN / EVERY, ODO tables, JSON-CODE, ON EXCEPTION, COMP-1 (#7947) are done; CONVERTING boolean is this PR.

Sibling gaps

No burned estate program uses JSON (census programs are non-burned: listed, not worked).

• CONVERTING ... TO JSON NULL USING figurative (format 2): next slice.
• JSON PARSE CONVERTING (boolean), JSON PARSE floats / tables (X77).
• COMP-2 (IBM's picture illegal), elementary source, ODO table inside a table, NAME OMITTED on a member, BOOLEAN item in a table: refused by name, IBM silent.

Remaining slices

Format 2 (NULL); JSON PARSE CONVERTING.

Facts checked

• IBM 6.4 LR page read (rlpsjsog.html): format 1 rules and example (data-a false, data-b true) match the tests. The page does not say which release added the phrase; the register says so and claims none.
• det_port.py check: 270/270 ports unchanged (no burned program uses JSON).
• tests/cobol_mainframe/test_det_json_generate.py, test_cobolrt_rules.py, test_cobolrt_api.py: 179 passed (incl. a JDK 17 runtime run of bool). audit_check.py: all clear. cobolrt_rules.py --check: consistent.

Lessons for agents

• A new public JsonGenerate node factory needs its name in the CBL family plumbing list (cobolrt_rules.json) and cobolrt_api.py generate; one the translator emits by f-string shows as internal until set to public by hand (test_no_committed_port_or_generator_string_uses_an_internal_member).
• Fixed-form test source past column 72 raises a LayoutError, not a hole: break long statements in test helpers.

🤖 Generated with Claude Code

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Waiting on an owner decision (asked privately, 2026-11-06). Nothing is needed from contributors; work resumes once it is answered.