Update tests.
Reason: it turns out that the native output generated by
pretty-simple isn't always readable by the native reader.
According to https://github.com/cdepillabout/pretty-simple/issues/99
it is not a design goal of the library that the rendered values
be readable using 'read'. This makes it unsuitable for our
purposes.
pretty-show is a bit slower and it uses 4-space indents
(non-configurable), but it doesn't have this serious drawback.
Previously we used our own homespun formatting. But this
produces over-long lines that aren't ideal for diffs in tests.
Easier to use something off-the-shelf and standard.
Closes#7580.
Performance is slower by about a factor of 10, but this isn't
really a problem because native isn't suitable as a serialization
format. (For serialization you should use json, because the reader
is so much faster than native.)
* Set dbBook to true when traversing a chapter too.
Currently, a `<title/>` in a chapter and in a `<section/>` below that
chapter have the same level if they're not inside a `<book/>`.
This can happen in a multi-file book project. Also see the example at
https://tdg.docbook.org/tdg/4.5/chapter.html
Co-authored-by: Félix Baylac-Jacqué <felix@alternativebit.fr>
* Add docbook-chapter test
This tests nested `<section/>` and makes sure `<title/>` in the first
`<section/>` below `<chapter/>` is one level deeper than the `<chapter/>`'s
`<title/>`, also when not inside a `<book/>`.
Co-authored-by: Félix Baylac-Jacqué <felix@alternativebit.fr>
