Adds support for table of contents and chunks handling. The function
`make_sections` has been given a friendlier interface and was moved to
the new module; the old `pandoc.utils.make_sections` has been
deprecated.
Rationale: we need this splitting level now not just in
EPUB but in chunked HTML.
`--epub-chapter-level` will still function as a deprecated
synonynm. `epub-chapter-level` will also continue to work in
defaults files, ande `epub_chapter_level` will still work for
Lua marshalling.
[API changes]
Text.Pandoc.App.Opt: remove `optEpubChapterLevel`, add
`optSplitLevel`.
Text.Pandoc.Options: remove `writerEpubChapterLevel`, add
`writerSplitLevel`.
This Unicode char (U+2029) is intended as a semantic separator between
paragraphs; it is cleaner and less intrusive than the pilcrow sign that
we used before. This also changes the default `sep` value used in the
`pandoc.utils.blocks_to_inlines` Lua function.
Custom writers can define a default template via a global `Template`
function; the data directory is no longer searched for a default
template.
Writer authors can restore the old lookup behavior with
``` lua
Template = function ()
local template
return template.compile(template.default(PANDOC_SCRIPT_FILE))
end
```
Like custom readers, like writers, can define the set of supported
extensions by setting a global. E.g.:
``` lua
reader_extensions = {
smart = true,
citations = false,
}
```
Custom writers can define the extensions that they support via the
global `writer_extensions`. The variable's value must be a table with
all supported extensions as keys, and their default status as values.
E.g., the below specifies that the writer support the extensions `smart`
and `sourcepos`, but only the `smart` extension is enabled by default:
writer_extensions = {
smart = true,
sourcepos = false,
}
New-style custom Lua writers can now define an alternative entry function
`BinaryWriter`. If a function with that name is defined, then pandoc
will treat the returned string as binary output. This allows to generate
formats like docx and odt with custom writers.
The `T.P.Lua.writeCustom` function changed to allow either a TextWriter
or ByteStringWriter to be returned. The global variables
`PANDOC_DOCUMENT` and `PANDOC_WRITER_OPTIONS` are no longer set when the
writer script is loaded. Both variables are still set in classic writers
before the conversion is started, so they can be used when they are
wrapped in functions.
Albert Krewinkel