Parse bare export and unexport directives without aborting - #20
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`makeutil parse` aborts with `parse-internal: required variable-assignment-operator accessor was absent` on any Makefile containing a bare `export` directive (`export FOO BAR`), destroying the report for the whole file. Real-world trigger: netsuke's `Makefile:35`, which blinds every downstream concordat rule package for that repository. The plan represents each exported name as a `variables` entry with the empty operator already in the version 1 schema (discriminated by `operator == "" && !define_block`), keeping `schema_version: 1` and `status: "complete"`; guarantees `parse-internal` can never abort a parse again (recovered diagnostics instead); and splits the makeutil-only fix from the upstream makefile-lossless change needed to carry multi-name export lists. `unexport` fidelity and target-specific exports are documented deferrals. Plan only; no implementation accompanies it.
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WalkthroughThe parser now supports bare and multi-name Make ChangesExport directive parsing
Sequence Diagram(s)sequenceDiagram
participant Makefile
participant MakefileAdapter
participant MakefileExport
participant Report
Makefile->>MakefileAdapter: provide parsed variable definition
MakefileAdapter->>MakefileExport: resolve export and assignment context
MakefileExport->>Report: emit valueless exported variable observations
MakefileAdapter->>Report: retain conditions, spans, and recovery diagnostics
Poem
Merge Risk: 🟡 Moderate · up to Keyword-shaped export names may still be silently omitted while parsing reports complete, which can produce incomplete variable/export data; the user guide may also promise recovery diagnostics for cases that remain complete. Merge should wait until the behavior and documentation are aligned. 🚥 Pre-merge checks | ✅ 19 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (19 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
Warning Review ran into problems🔥 ProblemsGit: Failed to clone repository. Please run the Comment |
Reviewer's GuideDocs-only PR that adds a detailed execution plan for implementing support for bare Sequence diagram for planned parse of a bare export directivesequenceDiagram
actor User
participant MakeutilCli
participant Application
participant MakefileLosslessParser
participant MakefileAdapter
participant JsonReport
User->>MakeutilCli: makeutil parse path
MakeutilCli->>Application: parse_source(path)
Application->>MakefileLosslessParser: MakefileLosslessParser::parse(source)
MakefileLosslessParser-->>Application: SyntaxTree
Application->>MakefileAdapter: collect_items(SyntaxTree)
MakefileAdapter->>MakefileAdapter: assignment_operator(operator, OperatorContext)
MakefileAdapter->>MakefileAdapter: directive_names(VariableDefinition)
MakefileAdapter-->>Application: SyntaxObservation::Variable entries
Application-->>JsonReport: assemble ParseReport
JsonReport-->>MakeutilCli: status == Complete
MakeutilCli-->>User: exit code 0, JSON on stdout
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A bare `export FOO` line names a variable assigned elsewhere, so it carries no assignment operator. The adapter treated an absent operator as a broken tree and returned MissingField, which propagated out as a fatal `parse-internal` message and exit code 2. Because the traversal collects facts before diagnostics, a single such line destroyed the report for the whole file: every rule, variable, and include was lost, and downstream consumers recorded an operational error instead of facts with one gap. Accept an absent operator when the line carries `export` as well as when it carries `define`, and represent each exported name as a variable fact with the schema's existing empty operator, an empty value, `exported` true, and `define_block` false. A name-less `export` exports everything, which schema version 1 cannot express, so it now yields no fact at all and upstream's own diagnostic drives the recovered status rather than an invented variable. An operator-less line that is neither a define nor an export still fails loudly, so genuinely broken trees are not masked. One `export A B C` node must yield one fact per name, so `variable_observation` returns a collection rather than a single observation. The operator mapping, directive-name walk, and directive expansion move into `adapters::makefile_export`, keeping both files well inside the 400-line limit. The schema is untouched and `schema_version` remains 1: the empty operator was already in the enum for define blocks, so no consumer validating against version 1 sees a new key or a new enum member. The multi-name form still reports `recovered` and captures only the first name, because the pinned parser drops the remaining names before the adapter sees them. Fixing that needs a change in the parser fork.
Stage review of the bare-export change found two ways it still broke the honesty and never-abort guarantees it was written to provide. `directive_names` decided which identifiers were directive keywords by matching token text against `export`, `unexport`, `override` and `define`. A variable may legitimately be called `unexport`, and upstream parses `export unexport` cleanly, so the name was dropped while the report still claimed `complete` — silently discarding a construct, which the JSON contract forbids. Anchor the walk on the name upstream itself reports instead: the identifiers preceding it are exactly the prefix keywords the parser consumed, which is also correct for `export export FOO`, where upstream consumes both leading keywords. An absent name means upstream found none and said so with a diagnostic, so the line names nothing. `export define FOO ... endef` is valid GNU Make, and upstream models it with no name at all. The no-facts path was gated on "export and not define", so this form still aborted with exit code 2. Gate it on the absent name alone: upstream diagnoses both `export define` forms, so dropping the facts leaves the report honestly recovered. A name-less definition that is not an export still fails loudly. Both behaviours are now pinned across every export and unexport form, including the keyword-named and repeated-prefix cases that motivated the change. Record the representation in ADR-0002 rather than leaving the rationale only in the execution plan, and correct the users' guide and design document, which claimed multi-name directives yield one entry per name. They do not yet: the pinned parser keeps only the first name, so such a line reports `recovered` with one entry until the parser learns the directive list form.
`unexport` is not recognized as a directive at all: upstream parses it as a rule whose first target is the word `unexport`. That never aborts, so it did not block the export fix, but the facts it produces are actively misleading — a consumer sees a rule that does not exist. Schema version 1 has no way to say "this name was explicitly un-exported", so the current behaviour is pinned in the unsupported-syntax corpus rather than corrected. If a future upstream release learns the directive, the test fails on purpose and forces the pin and the representation to be revisited together, which is exactly the policy that file documents. Add a note for downstream repositories, which consume `makeutil` by pinning a commit SHA and so only see this work when they move their pin. It records that bare exports no longer abort, that reports may now carry more `variables` entries and may name a variable twice, that `unexport` remains unsupported, that a multi-name export still reports recovered, and that the schema is unchanged so no re-validation is needed. Mark the execution plan blocked rather than complete. Every stage that does not require changing the parser fork is delivered; the multi-name case still reports recovered with the first name only, and the tests that would prove it fixed are written and need only their expectations flipped.
Dropping an unnameable export line and trusting the parser to have diagnosed it left a silent hole in the report. `override export override` parses upstream with no errors at all and no name, because the parser refuses any identifier whose text is one of its own directive keywords. The line was therefore discarded while the report still claimed `complete` with an empty diagnostics array — the same honesty breach that keyword-text filtering caused, arriving by a different route. Emit a diagnostic from the adapter instead of inheriting one. The guarantee that a dropped construct forces `recovered` now holds whatever the parser does, rather than for the inputs it happens to diagnose. The cost is a second diagnostic on inputs the parser does diagnose, such as a bare `export`; both are true and the status is unchanged. Guard the same class in `directive_names`: when the anchored walk yields nothing despite the parser reporting a name, report that name rather than silently returning an empty list. Strengthen the export form matrix to assert variable names alongside status, so a form that stopped producing its fact can no longer keep passing, and pin that a name-less definition which is not an export still fails loudly — the guard rail that keeps genuinely broken trees from being swept up by the drop path. Correct the documentation that rested on the false premise, in the users' guide, the design document and ADR-0002, and record in the plan that `override define FOO ... endef` still aborts. That is a documented GNU Make construct outside this plan's scope, and it loses the whole file exactly as bare exports used to.
The real-world shape of the construct that motivated this work is `export A B C` on one line, and until now it was the one form still degraded: no abort, but `recovered` status with only the first name. The pinned parser trapped the second name in an error node and pushed the third outside the definition node, so no amount of tree walking here could recover them. Bump the parser fork to a revision that keeps every name of an `export`-led list inside the definition node, and flip the two expectations that were written against the old behaviour. The line now reports `complete` with one valueless entry per exported name, which is what the plan set out to achieve. `VariableDefinition::name()` still reports the first name upstream, so the extraction here is unchanged: it anchors on that name and takes the identifier tokens that follow. Names spread over a line continuation are collected too. Two expectations move in the other direction, matching GNU Make rather than convenience. `override export FOO BAR` is rejected by make with "missing separator", so it reports `recovered` rather than being read as a name list. Its single-name form `override export FOO` is also rejected by make but has always parsed cleanly here; that predates this work and is pinned as it behaves rather than quietly changed. Neither snapshot moved and the schema is untouched, which is the evidence that the revision bump is confined to multi-name export lines.
Stage review checked every changed expectation against GNU Make 4.4.1 and found that the documentation claimed more than the code delivers. ADR-0002 said a variable whose name is `export`, `override` or `define` "degrades to a diagnostic rather than a fact". That holds only when such a name is alone on the line. Mixed with a nameable one, as in `export export FOO`, GNU Make exports both while the report names only `FOO` and still says `complete`. The omission is silent, which is the one surviving breach of the honesty rule in this work. It is pre-existing and unchanged here, but describing it wrongly is worse than leaving it open, so the ADR, the design document and the users' guide now say what actually happens, and `no_export_form_aborts` pins both spellings so the gap stays visible. Closing it means redefining what the parser's `name()` accessor treats as a name, which breaks every consumer of that crate and needs its own decision. The developers' guide still recorded the superseded parser pin and described the empty operator as meaning a define block only; both now match the code. The plan's Decision Log claimed `export override FOO` reads `override` as a name and that both behaviours are pinned. True of GNU Make, false of what the tests assert. Split the claim so make's behaviour and this tool's divergence are stated separately. Pin the multi-name facts more deeply: `overridden` and the shared whole-directive span were asserted by no test, although the ADR and the design document make positive claims about both. The pinned parser revision sits on an unmerged fork branch, so a rebase or deletion during review could make it unreachable. It now carries an annotated tag on the fork, recorded as the mitigation in the plan's Risks. The pin itself stays an immutable commit hash.
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August 14, 2026 18:59
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Preserve nameable facts while marking keyword-shaped names that the upstream parser cannot represent as recovered with a source location. Expand parser, property, and black-box coverage, and document the schema, migration, and helper-reuse contracts.
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '== PR metadata and checks =='
gh pr view 20 --repo leynos/makeutil --json url,headRefName,statusCheckRollup \
--jq '{url, headRefName, checks: [.statusCheckRollup[] | {name, status, conclusion}]}'
echo
echo '== Changed paths =='
git diff --name-status "$(git merge-base HEAD origin/HEAD)" HEAD 2>/dev/null || \
git diff --name-status HEAD~1 HEAD
echo
echo '== Documentation index and migration-guide candidates =='
fd -i 'migration.*guide|contents\.md|users.*guide' docs 2>/dev/null || true
rg -n -i -C 2 'migration|bare export|unexport' docs 2>/dev/null || true
echo
echo '== CLI end-to-end test structure and bare-export coverage =='
fd -t f . tests 2>/dev/null | sort
rg -n -i -C 3 'assert_cmd|Command::cargo_bin|cli_e2e|bare-export|bare export|export_directive' tests Cargo.toml 2>/dev/null || true
echo
echo '== Property-test dependencies and directive-name coverage =='
rg -n -i -C 3 'proptest|quickcheck|directive_names|export_directive_observations' \
Cargo.toml Cargo.lock src tests 2>/dev/null || trueLength of output: 52253 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '== Migration guide =='
nl -ba docs/v0-1-0-migration-guide.md | sed -n '1,110p'
echo
echo '== Documentation index entries =='
nl -ba docs/contents.md | sed -n '1,45p'
echo
echo '== Bare-export CLI end-to-end test =='
nl -ba tests/cli_e2e.rs | sed -n '1,115p'
echo
echo '== Bare-export property test =='
nl -ba tests/export_directives.rs | sed -n '270,380p'
echo
echo '== CLI fixture =='
nl -ba tests/fixtures/makefiles/bare-export-cli.mk | sed -n '1,80p'Length of output: 862 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '== Migration guide =='
cat -n docs/v0-1-0-migration-guide.md | sed -n '1,110p'
echo
echo '== Documentation index entries =='
cat -n docs/contents.md | sed -n '1,45p'
echo
echo '== Bare-export CLI end-to-end test =='
cat -n tests/cli_e2e.rs | sed -n '1,115p'
echo
echo '== Bare-export property test =='
cat -n tests/export_directives.rs | sed -n '270,380p'
echo
echo '== CLI fixture =='
cat -n tests/fixtures/makefiles/bare-export-cli.mk | sed -n '1,80p'Length of output: 14161
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Inline comments:
In `@docs/design.md`:
- Around line 380-383: Update docs/design.md lines 380-383 to identify bare
exports using operator == "" && define_block == false instead of filtering for a
non-empty operator; update
docs/adrs/0002-bare-export-directive-representation.md lines 134-135 to require
both operator and define_block in the acceptance criterion. Use the existing
variables serialization terminology and make no code changes.
In `@docs/execplans/bare-export-directives.md`:
- Around line 541-546: Update the surviving-breach summary near the `name()`
accessor discussion to acknowledge both known honesty-rule breaches, including
the earlier `foo: export BAR := baz` case; remove the claim that this is the
only surviving breach while preserving the explanation that the omission is
pre-existing and requires a separate breaking-change decision.
In `@docs/users-guide.md`:
- Around line 91-94: Align the users-guide paragraph about directives containing
exported names such as “export export FOO” or “export override FOO” with the
actual adapter and test behavior: either document the current single-FOO-fact
and complete-status result, or update the adapter and tests so the keyword-named
export is retained with recovered status and a diagnostic before keeping the
existing claim.
In `@docs/v0-1-0-migration-guide.md`:
- Around line 42-48: Update the “Handle export directives” section to document
that multi-name directives such as export A B C produce one valueless variables
entry per name and return complete when every name is representable; add a
concise example showing the separate entries and clarify that consumers must not
assume one entry per directive.
In `@src/adapters/makefile_export.rs`:
- Around line 69-71: Update the documentation comment for the nameless export
handling near variable_observation to state that variable_observation emits the
recovery diagnostic before this helper runs. Remove the claim that an upstream
diagnostic drives the recovered status, while retaining the schema-version
limitation and behavior description.
In `@tests/cli_e2e.rs`:
- Around line 66-72: Add a predicate in the variable filter used by the test to
require that the `raw_value` field is an empty string, alongside the existing
`operator`, `exported`, and `define_block` checks, so only valueless export
facts are collected.
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⛔ Files ignored due to path filters (1)
Cargo.lockis excluded by!**/*.lock
📒 Files selected for processing (24)
Cargo.tomldocs/adrs/0002-bare-export-directive-representation.mddocs/contents.mddocs/design.mddocs/developers-guide.mddocs/execplans/bare-export-directives.mddocs/users-guide.mddocs/v0-1-0-migration-guide.mdsrc/adapters/makefile.rssrc/adapters/makefile_export.rssrc/adapters/makefile_export_tests.rssrc/adapters/makefile_tests.rssrc/adapters/mod.rssrc/domain/mod.rstests/cli_e2e.rstests/corpus.rstests/export_directives.rstests/features/parse.featuretests/fixtures/makefiles/bare-export-cli.mktests/fixtures/makefiles/bare-export.mktests/fixtures/makefiles/export-directive-limits.mktests/fixtures/makefiles/export-directive-list.mktests/parse_bdd.rstests/report_schema.rs
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38 tasks
Align the schema predicate, migration guidance, and historical plan record with the adapter behaviour, and require valueless export facts in the CLI contract.
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '== Pull request status checks =='
gh pr view 20 --repo leynos/makeutil \
--json url,headRefName,statusCheckRollup \
--jq '{url, headRefName, checks: [.statusCheckRollup[] | {name, status, conclusion}]}'
echo
echo '== Relevant files =='
fd -t f . docs tests | rg '(^|/)(v0-1-0-migration-guide\.md|contents\.md|cli_e2e\.rs|export_directives\.rs|bare-export-cli\.mk)$'
echo
echo '== Documentation guide and index references =='
rg -n -C 3 'bare `?export`?|unexport|v0-1-0-migration-guide' \
docs/v0-1-0-migration-guide.md docs/contents.md
echo
echo '== CLI test structure and assertions =='
ast-grep outline tests/cli_e2e.rs --items all --view expanded
rg -n -C 5 'bare.export|assert_cmd|cargo_bin|success|stderr|schema|FOO|BAR' tests/cli_e2e.rs
echo
echo '== Property-test structure and assertions =='
ast-grep outline tests/export_directives.rs --items all --view expanded
rg -n -C 6 'proptest!|proptest|multi.name|round.trip|span|metadata|cardinality|ordered' \
tests/export_directives.rs
echo
echo '== CLI fixture =='
cat -n tests/fixtures/makefiles/bare-export-cli.mkLength of output: 17921
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Summary
This branch delivers its ExecPlan in full:
makeutil parsehandles bareexportandunexportdirectives instead of aborting withparse-internal: required variable-assignment-operator accessor was absent. Every stage ofdocs/execplans/bare-export-directives.md
(Status: COMPLETE) is implemented, and each stage was independently
code-reviewed against the plan and
AGENTS.mdbefore landing.Delivered behaviour:
export FOOandexport FOO BAR BAZparsecomplete(exit 0); everyexported name appears in
variableswith the empty-string operatoralready in the version 1 schema, discriminated by
operator == "" && !define_block.schema_versionstays 1 and theschema file is untouched.
makefile-losslessfork, which makeutil already consumed via
[patch]: the upstream treechange is
leynos/makefile-lossless#1
(draft), and this branch bumps the pinned rev to
2ae7134.VariableDefinition::name()stays backwards compatible (first name).unexport,keyword-named exports) degrade honestly to
recoveredwith locateddiagnostics — never a fatal abort. The exit-code contract
(0 complete / 1 recovered / 2 fatal) and the byte-for-byte round-trip
invariant are preserved and pinned by tests.
Makefile— the original trigger — nowparses
completewith zero diagnostics and exit 0 (36 rules, 39variables including the three bare-exported names).
Review walkthrough
fix: bare export directives parse without aborting.
review-found fix for export names that resemble keywords.
unexportlimitation pinned by regression test and documented.diagnostics for export lines the parser cannot fully name.
upstream rev bump and multi-name reporting (pairs with
Parse multi-name export directives makefile-lossless#1).
and documentation updated to describe the remaining keyword-named gap
accurately.
evidence and per-stage review outcomes, including the review finding
that became its own commit.
Validation
make check-fmt,make lint,make test: pass on every commit; allcargo suites green.
make markdownlint(with provenance),make spelling,make nixie:pass.
FOO := 1/BAR := 2/export FOO BARyieldscomplete, zerodiagnostics, exit 0, with four
variablesentries (two assignments,two export facts); netsuke's full
Makefileparsescomplete, exit 0.Notes
Merging leynos/makefile-lossless#1 first keeps the pinned rev reachable
from that fork's default branch, though the pin is by SHA and functions
regardless. After this merges, consumers re-pin makeutil by commit SHA;
concordat's re-pin is Wave 0 of the Rust baseline remediation plan and is
tracked on the concordat side.
References
Summary by Sourcery
Parse bare export directives without aborting while preserving complete reports for representable forms and honest recovery for unsupported constructs.
New Features:
exportdirectives as valueless exported variable facts, including one fact for each name in multi-name directives.Bug Fixes:
exportdirectives from aborting parsing and discarding the rest of a Makefile report.unexportdirectives produce honest recovered results rather than fatal internal errors or silent omissions.Enhancements:
Build:
makefile-losslessrevision and update the lockfile.Documentation:
Tests: