Changes in version 0.1.0 (2026-10-07)                  

First release. The API is complete and the package is well tested, but
it is not frozen: names, defaults and return types may still change. Pin
the version if you depend on it.

Features

  - yaml_parse() / yaml_parse_all() parse YAML 1.2 from a string or a
    raw vector, yaml_emit() / yaml_emit_all() convert R objects back to
    YAML, and yaml_read() / yaml_read_all() / yaml_write() /
    yaml_write_all() do the same for files. Throughout, _all means a
    YAML stream: several documents separated by ---, which is a
    different thing from a sequence.

  - Scalars follow the YAML 1.2 core schema, so yes and no are strings
    and dates are not coerced. Quoted scalars are always strings, and a
    quoted empty string never becomes NULL.

  - Integers beyond 2^53 are preserved as zuyaml_bigint rather than
    silently rounded. big_integers selects a different policy.

  - Tags override schema resolution, so !!str 12 is the string "12", in
    every spelling a core tag has: the shorthand, the verbatim form, and
    a handle bound by a %TAG directive. Application tags such as
    !duration are ignored by default; tags = "error" refuses them.

  - Mappings whose keys are sequences or mappings become zuyaml_map
    rather than having their structure flattened into names. This is
    parse-only.

  - Errors are classed conditions carrying a stable code, line and
    column, so callers never have to match on message text.

  - max_size, max_depth and max_nodes bound untrusted input. The last of
    these is what stops alias-expansion bombs, which are small and
    shallow by construction and so escape the first two.

  - A value emitted with yaml_emit() parses back to the same value.
    Strings containing a line break, and strings with leading or
    trailing whitespace, are quoted so that neither is lost; a double
    with an integral value emits as 1.0, so it does not come back as an
    integer; and mapping keys are treated exactly like values. Asserted
    over the whole yaml-test-suite and over generated input. The
    exceptions are listed in vignette("zuyaml").

  - A literal NUL byte in the input is refused with an embedded_nul
    condition and a position. The underlying library treats one as end
    of input, so the rest of the document -- including any later
    documents in the stream -- would otherwise be discarded without a
    word.

  - A UTF-8 byte order mark at the start of a stream is not part of the
    document.

  - A float outside the range of a double converts to the nearest one:
    1e309 is Inf, 1e-324 is 0, and 1e-323 is the subnormal it names. One
    extreme value never changes the R type of a field.

Notes

  - simplify defaults to FALSE: the shape of the result never depends on
    the contents of the document.

  - The cyaml C library is bundled and pinned to v0.1.3. See
    inst/COPYRIGHTS for licensing and the modifications made for R
    compatibility, and tools/patches/README.md for why each one is
    required.