The six worked examples of the C14N 1.0 Recommendation's section 3 run
as input/expected-output tests. They exposed and fixed: top-level
siblings now separated by single line feeds in the canonical form;
superfluous empty default-namespace declarations dropped in inclusive
mode (xmlns="" renders only when undeclaring a rendered non-empty
default); and scalar-level escape loops, so a CR clustered with a
following LF still escapes to 
. Escaping split to its own file
for the length caps.
Closes#132
Add a canonical11 preset / mergeInheritedBase option. On a document subset,
the omitted-ancestor xml:base chain is merged into the apex by RFC 3986
reference resolution (vs 1.0 nearest-wins), the apex's own relative xml:base
is resolved against it, and xml:id is no longer inherited; xml:lang/xml:space
still inherit nearest. A self-contained RFC 3986 resolver (parse, path merge,
dot-segment removal) backs the merge, with tests covering the 1.1-vs-1.0
difference, dot segments, xml:id, and lang/space.
Part of #105 (Tier 3)
Close the remaining documented parity edges:
- Canonical XML 2.0 TrimTextNodes: an option that strips leading and trailing
whitespace from each text node (dropping all-whitespace nodes), exposed as
Options.canonical2.
- XML Catalog delegation and chaining: delegatePublic, delegateSystem,
delegateURI, and nextCatalog entries are parsed, and resolveSystem/
resolvePublic/resolveURI gain a loadingCatalog overload that follows the
longest matching delegate prefix and then each nextCatalog, with a
visited-set guard against cycles.
- XPath number formatting: the canonical string form now expands any exponent
in the shortest double rendering to a plain decimal, since XPath 1.0 forbids
scientific notation.
Closes#70
Add the PureXML.Canonical namespace rendering the C14N form: namespaces
sorted by prefix (default first), attributes by namespace URI then local
name, empty elements expanded to start/end pairs, CDATA folded into escaped
text, and the C14N escaping rules. Inclusive mode renders every in-scope
namespace; exclusive mode renders only visibly-used namespaces plus an
InclusiveNamespaces prefix list. Comments omitted unless requested. For
whole-tree canonicalization C14N 1.0 and 1.1 coincide.
Closes#54Closes#55Closes#56Closes#26
