* Publish an epub of the docs on Read the Docs (#1835)
Read the Docs' built-in formats support (the existing formats: all in
.readthedocs.yaml) only produces epub/PDF for Sphinx projects, and is a
silent no-op for MkDocs ones. Instead, per RTD's documented
build-customization path, generate the epub ourselves in a post_build
job and place it in $READTHEDOCS_OUTPUT/epub/, which RTD then publishes
on the project Downloads page and in the docs flyout menu.
The epub itself is built by the new docs/build-epub.sh: it takes the
committed, generated Markdown pages in docs/src in mkdocs.yml nav
order, strips the HTML-only quicklinks header from each page, and runs
pandoc (installed on RTD via build.apt_packages). Locally, `make -C
docs epub` does the same for anyone with pandoc installed; nothing here
is part of `make dev` or any default build path.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix misrender
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Co-authored-by: Claude Fable 5 <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.
