This repository contains code that populates https://www.w3.org/ns/iana/, from data extracted from IANA registries.
At the moment, the files are not automatically reflected on the W3C website.
To (re-)generate the files, cd into a subdirectory of toolchain-rebal
(media-types or link-relations) and type make.
git status or git diff can then be used to inspect the changes into the out directory (see below).
Sometimes, Turtle files can be superficially changed, without any impact on the produced triples.
However, in our case (especially for the out directory),
we are more interested in the triples than in the surface syntax.
This project contains a .gitattributes file,
which sets the "diff type" of Turtle files to rdf.
This has no effect unless you customize your git confiuration file.
My own ~/.gitconfig contains the following directive:
[diff "rdf"]
textconv = rdf-canon
where rdf-canon is a script that takes an RDF file as parameter,
and writes its canonical form on the standard output.
Git will then compare the canonical forms of the Turtle files rather than the surface syntax,
with an empty diff if the triples are not modified, even if the surface syntax is.
NB: a limitation of this method is that sometimes, a tiny change in the file may cause a big diff, because it may cause a large number of blank nodes to be relabeled. This never occurs, though, when only triples with no blank nodes are modified.
NB: it is possible to revert to Git's default behaviour (i.e. comparing the surface syntax)
by passing the --no-textconv option to git diff.