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miller/pkg/transformers
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John Kerl 71190d3d99
plans/exit.md: record final status; defer phase 5; convert stragglers (#2207) 
Phase-5 wrap-up for plans/exit.md. The DSL-runtime cluster (pkg/dsl/cst:
hofs.go, udf.go, evaluable.go) is deferred rather than converted: 58
regression cases pin the current loud-failure behavior (exact stderr plus
exit 1), and the planned error-Mlrval mechanism would make HOF/UDF misuse
fail silently as bare '(error)' with exit 0 -- a debugging-UX regression.
The alternative (typed panic recovered at the Execute* boundaries) preserves
behavior but introduces panic/recover to a codebase that has none. The
decision belongs with the issue-440 strict-mode design, where the
fatal-vs-data error taxonomy gets decided anyway; plans/exit.md now records
the rationale, the phase-by-phase status (#2198, #2202, #2204, #2205), and
the final intentional keep-list.

Also converted here, since they're squarely in prior phases' patterns rather
than the deferred expression-depth cluster:

- RootNode.ProcessEndOfStream (a phase-3 leftover on the put/filter
  Transform path) returns an error instead of printing-and-exiting on
  end-of-stream close failures; first error returned, any others printed at
  the site.
- The three CompileMillerRegexOrDie calls in option_parse.go (inside
  error-returning parser closures since phase 2) use CompileMillerRegex and
  return the error; 'mlr --ifs-regex (' output and exit code are unchanged.

All 4779 regression cases pass; make lint 0 issues.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-15 16:05:53 -04:00
..
utils Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
aaa_chain_transformer.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
aaa_record_transformer.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
aaa_transformer_json.go Tier-2 structured verb options: OptionSpec, initial migration (#2098) (#2111) 2026-07-03 14:27:23 -04:00
aaa_transformer_json_test.go Tier-2 structured verb options: OptionSpec, initial migration (#2098) (#2111) 2026-07-03 14:27:23 -04:00
aaa_transformer_table.go Add bootstrap-ci verb for bootstrap-resampling confidence intervals (#1670) (#2189) 2026-07-14 17:00:34 -04:00
aaa_verb_usage.go Tier-2 structured verb options: OptionSpec, initial migration (#2098) (#2111) 2026-07-03 14:27:23 -04:00
altkv.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
bar.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
bootstrap.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
bootstrap_ci.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
bootstrap_ci_test.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
case.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
cat.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
check.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
clean_whitespace.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
count.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
count_similar.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
cut.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
decimate.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
describe.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
doc.go Export library code in pkg/ (#1391) 2023-09-10 17:15:13 -04:00
fill_down.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
fill_empty.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
flatten.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
format_values.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
fraction.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
gap.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
grep.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
group_by.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
group_like.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
having_fields.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
head.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
histogram.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
join.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
json_parse.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
json_stringify.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
label.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
latin1_to_utf8.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
merge_fields.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
most_or_least_frequent.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
nest.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
nothing.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
put_or_filter.go plans/exit.md: record final status; defer phase 5; convert stragglers (#2207) 2026-07-15 16:05:53 -04:00
rank.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
README.md Export library code in pkg/ (#1391) 2023-09-10 17:15:13 -04:00
regularize.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
remove_empty_columns.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
rename.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
reorder.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
repeat.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
reshape.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sample.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sec2gmt.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sec2gmtdate.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
seqgen.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
shuffle.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
skip_trivial_records.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sort.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sort_within_records.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sparkline.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
sparsify.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
split.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
stats1.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
stats1_test.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
stats2.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
step.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
step_test.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
subs.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
summary.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
surv.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
tac.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
tail.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
tee.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
template.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
top.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
unflatten.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
uniq.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
unspace.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
unsparsify.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00
utf8_to_latin1.go Remove os.Exit callsites below the entrypoint: phase 3 (plans/exit.md) (#2204) 2026-07-15 15:07:09 -04:00

README.md

Logic for transforming input records into output records as requested by the user (sort, filter, etc.).:

  • The IRecordTransformer abstract record-transformer interface datatype, as well as the ChainTransformer Go-channel chaining mechanism for piping one transformer into the next.
  • The transformer lookup table, used for Miller command-line parsing, verb construction, and online help.
  • All the concrete record-transformers such as cat, tac, sort, put, and so on.