miller/pkg/mlrval
John Kerl 91eaff1341
Lint round 5+6: staticcheck and errcheck to zero (#2130)
* refine the plan

* Fix all staticcheck lint findings (uncapped)

golangci-lint's default max-same-issues=3 was hiding most of the backlog:
the true pre-fix count was 69 staticcheck findings, not 34. This fixes all
of them, driving staticcheck to zero:

- ST1023/QF1011 (37): omit explicit types inferred from the RHS
- S1009/S1031 (15): drop redundant nil checks before len()/range
- SA9003 (9): remove comment-only empty branches, keeping the comments
- QF1007 (3): merge conditional assignment into declaration
- QF1006 (3): lift break conditions into loop conditions
- QF1001 (3): apply De Morgan's law / name the negated predicate

Also updates plans/lintfixes.md with the cap discovery and the corrected
errcheck picture (1202 uncapped, ~949 of them fmt.Fprint*).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Drive errcheck to zero: config for bulk categories, propagate real errors

Adds .golangci.yml with errcheck exclude-functions for fmt.Fprint* (usage
printers), (*bufio.Writer).Write/WriteString (sticky errors, surfaced at the
now-checked final Flush), and (*strings.Builder).WriteString; pins
max-issues-per-linter/max-same-issues to 0 so CI reports true counts.

Real error paths now propagate instead of being dropped:
- Finalize{Reader,Writer}Options in join/put/filter/split/tee and the
  repl/script entry points: 'mlr join -i badformat' now errors instead of
  silently using wrong separators
- final output-stream Flush in pkg/stream: write failure no longer exits 0
- DSL emit/print/dump redirect writes, matching their sibling branches
- CSV writer WriteCSVRecordMaybeColorized, close-time Flush in file output
  handlers, ENV[...] Setenv, REPL record-write and redirect-close errors
- termcvt write-side Close before rename (had "TODO: check return status")

The rest are deliberate ignores, marked with _ = and a comment where the
reason isn't obvious: unset-of-missing-path no-ops, read-side closes,
mid-stream FlushOnEveryRecord, init-time strftime registrations, in-memory
usage-capture pipes, and regtest-harness env/temp-file teardown.

golangci-lint now reports 0 issues on ./cmd/mlr ./pkg/... with all caps off.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-03 11:42:08 -04:00
..
mlrmap.go Lazy per-record hashing: ~15-30% faster on common workloads (#2081) 2026-06-19 16:37:42 -04:00
mlrmap_accessors.go Lint round 5+6: staticcheck and errcheck to zero (#2130) 2026-07-03 11:42:08 -04:00
mlrmap_accessors_test.go Implement mlr uniq -x (#1457) 2023-12-23 16:20:11 -05:00
mlrmap_flatten_unflatten.go Lint round 5+6: staticcheck and errcheck to zero (#2130) 2026-07-03 11:42:08 -04:00
mlrmap_json.go Fix govet lint findings; fix masked unset-on-array error path (#2129) 2026-07-03 10:31:08 -04:00
mlrmap_new_test.go Export library code in pkg/ (#1391) 2023-09-10 17:15:13 -04:00
mlrmap_print.go Fix govet lint findings; fix masked unset-on-array error path (#2129) 2026-07-03 10:31:08 -04:00
mlrval_accessors.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_benchmark_test.go The package version must match the major tag version (#1654) 2024-09-20 12:10:11 -04:00
mlrval_cmp.go Strip dead code from pkg/ (#2121) 2026-07-01 19:32:13 -04:00
mlrval_cmp_test.go Strip dead code from pkg/ (#2121) 2026-07-01 19:32:13 -04:00
mlrval_collections.go Fix govet lint findings; fix masked unset-on-array error path (#2129) 2026-07-03 10:31:08 -04:00
mlrval_collections_test.go Fix govet lint findings; fix masked unset-on-array error path (#2129) 2026-07-03 10:31:08 -04:00
mlrval_constants.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_copy.go Convert if/else-if chains to typed switch statements (staticcheck QF1003) (#2112) 2026-06-28 18:27:42 -04:00
mlrval_format.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_format_test.go Export library code in pkg/ (#1391) 2023-09-10 17:15:13 -04:00
mlrval_get.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_get_test.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_infer.go Strip dead code from pkg/ (#2121) 2026-07-01 19:32:13 -04:00
mlrval_infer_test.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_is.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_is_test.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_json.go Fix govet lint findings; fix masked unset-on-array error path (#2129) 2026-07-03 10:31:08 -04:00
mlrval_new.go Convert if/else-if chains to typed switch statements (staticcheck QF1003) (#2112) 2026-06-28 18:27:42 -04:00
mlrval_new_test.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_output.go Fix govet lint findings; fix masked unset-on-array error path (#2129) 2026-07-03 10:31:08 -04:00
mlrval_output_test.go Export library code in pkg/ (#1391) 2023-09-10 17:15:13 -04:00
mlrval_sort.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_sort_test.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_type.go Multiple style updates (#1974) 2026-02-16 15:49:21 -05:00
mlrval_type_test.go Export library code in pkg/ (#1391) 2023-09-10 17:15:13 -04:00
mlrval_yaml.go Lint round 5+6: staticcheck and errcheck to zero (#2130) 2026-07-03 11:42:08 -04:00
mlrval_yaml_test.go fix: preserve key order in YAML output (#2034) 2026-04-12 09:43:09 -04:00
record_arena.go Batch-allocate per-record objects; reuse CSV writer field buffer (#2083) 2026-06-19 17:03:04 -04:00