The --lp/--rp prefixes and -j output-field rename were applied only to
paired records, leaving unpaired records emitted via --ul/--ur with their
original (left/right) field names. This broke downstream operations like
unsparsify that expected consistent column names across paired and
unpaired output.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* Default to "cat" verb when none is supplied (#2029)
Invocations like 'mlr --j2y' or 'mlr --c2p' previously failed with
"no verb supplied", forcing users to type the trailing 'cat'
explicitly for pure format conversions. Default the verb to 'cat'
in that case. Bare 'mlr' with no flags, no verb, and no files
still prints the main usage banner.
This handles flag-only invocations (e.g. 'mlr --c2j < input.csv'
or 'mlr --c2j --from input.csv'). File names without a preceding
verb are still parsed as verb candidates and continue to error if
not found; that broader change is out of scope here.
* Use ${MLR} substitution for bare-mlr regression case (#2029)
The regtester only substitutes the mlr executable when the cmd
starts with "mlr " (with a trailing space). The bare-mlr usage-banner
test had a cmd of just "mlr", so on CI -- which invokes regtest with
a relative path like 'test/../mlr' -- the test shelled out to a
literal 'mlr' that isn't on PATH and failed with exit 127.
Switch the cmd to ${MLR} (the regtester's explicit substitution
token) so the case runs the right binary in any invocation context.
The shebang example `#!/usr/bin/env mlr -s` does not work on Linux
because env(1) does not accept arguments to the interpreter; use
`#!/usr/bin/env -S mlr -s` instead.
`contains` and `index` previously stringified their inputs silently,
so `contains([1,2], $foo)` would match against the literal string
`[1, 2]` and produce surprising results. Both now return a type-error
when either argument is an array or map; help text points users at
`any(arr, func(e){return e == x})` for membership tests.
Adds a new Markdown-only flag --omd-aligned (alias --omarkdown-aligned)
that left-justifies cells and pads each column to a uniform width.
The rendered table is unaffected; the goal is readability of the raw
markdown source. The flag implies --omd, so users do not need to pass
both.
Implementation batches records by schema (like pprint), computes max
column widths, then emits header / separator / data rows with bars
vertically aligned. Default markdown writer behavior is unchanged.
* reader
* record writer
* pkg/output/record_writer_dcf.go
* test/input/test.dcf
* test/cases/io-dcf/
* pkg/cli/option_parse.go
* make fmt
* make dev
* docs and `make dev`
* docs/src/proposal-yaml-io.md
* initial step
* Add `--y2c` etc
* test cases
* docs
* more testing
* more
* more test cases
* git rm docs/src/proposal-yaml-io.md
* make dev
* ylistwrap -> yarray
