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Inlines, Blocks, and List objects now have an `__eq` metamethod, testing
equality by comparing two lists element-wise.
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The function is no longer required for element comparisons; it is now an
alias for the `==` operator.
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The function behaves like the default `type` function from Lua's
standard library, but is aware of pandoc userdata types. A typical
use-case would be to determine the type of a metadata value.
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The objects now also follow the principle that element attributes are
accessible through the `.attr` field. Rows in `TableHead` and
`TableFoot` are available via the `.rows` field. Row objects have a
`.cells` field, containing the list of table cells.
Closes: #7718
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List with all cited references of a document.
Closes: #7752
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The traversal order of filters can now be selected by setting the key
`traverse` of the filter to either `'topdown'` or `'typewise'`; the
default remains `'typewise'`.
Topdown traversals can be cut short by returning `false` as a second
value from the filter function. No child-element of the returned element
is processed in that case.
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Cell values are now marshaled as userdata objects; a constructor
function for table cells is provided as `pandoc.Cell`.
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- `walk` methods are added to `Block` and `Inline` values; the methods
are similar to `pandoc.utils.walk_block` and
`pandoc.utils.walk_inline`, but apply to filter also to the element
itself, and therefore return a list of element instead of a single
element.
- Functions of name `Doc` are no longer accepted as alternatives for
`Pandoc` filter functions. This functionality was undocumented.
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The new `pandoc.Inlines` function behaves identical on string input, but
allows other Inlines-like arguments as well.
The `pandoc.utils.text` function could be written as
function pandoc.utils.text (x)
assert(type(x) == 'string')
return pandoc.Inlines(x)
end
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The functions convert their argument into a list of Block and Inline
values, respectively.
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The function converts a string to `Inlines`, treating interword spaces
as `Space`s or `SoftBreak`s. If you want a `Str` with literal spaces,
use `pandoc.Str`.
Closes: #7709
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The `lpeg` and `re` modules are loaded into globals of the respective
name, but they are not necessarily registered as loaded packages. This
ensures that
- the built-in library versions are preferred when setting the globals,
- a shared library is used if pandoc has been compiled without `lpeg`,
and
- the `require` mechanism can be used to load the shared library if
available, falling back to the internal version if possible and
necessary.
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Reader options can now be passed as an optional third argument to
`pandoc.read`. The object can either be a table or a ReaderOptions value
like `PANDOC_READER_OPTIONS`. Creating new ReaderOptions objects is
possible through the new constructor `pandoc.ReaderOptions`.
Closes: #7656
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Ensure consistency throughout docs
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This commit fixes the typo in the Lua filters documentation, see #7159
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The documentation for Lua filters said "The this module defines..."
This has been fixed to say "This module defines..."
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The module allows to work with file paths in a convenient and
platform-independent manner.
Closes: #6001
Closes: #6565
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Closes #6795, thanks to Odin Kroeger.
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Use American spelling.
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Add info on debugging Lua filters.
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A new type `SimpleTable` is made available to Lua filters. It is
similar to the `Table` type in pandoc versions before 2.10;
conversion functions from and to the new Table type are provided.
Old filters using tables now require minimal changes and can use,
e.g.,
if PANDOC_VERSION > {2,10,1} then
pandoc.Table = pandoc.SimpleTable
end
and
function Table (tbl)
tbl = pandoc.utils.to_simple_table(tbl)
…
return pandoc.utils.from_simple_table(tbl)
end
to work with the current pandoc version.
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This makes the example a bit more realistic/valuable by checking if the metadata value "date" is already present, before changing the value.
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The example is outdated and requires a complete overhaul.
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This changes the Lua API. It is highly unlikely for this change to
affect existing filters, since the documentation for the new Table
constructor (and type) was incomplete and partly wrong before.
The Lua API is now more consistent, as all constructors for elements
with attributes now take attributes as the last parameter.
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Showcase temporary directory handling with `with_temporary_directory`
and `with_working_directory`.
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Change description of BulletList parameter from 'List of Blocks' to 'List of List of Blocks'.
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Closes: #6040
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Lists of Inline and Block elements can now be filtered via `Inlines` and
`Blocks` functions, respectively. This is helpful if a filter conversion
depends on the order of elements rather than a single element.
For example, the following filter can be used to remove all spaces
before a citation:
function isSpaceBeforeCite (spc, cite)
return spc and spc.t == 'Space'
and cite and cite.t == 'Cite'
end
function Inlines (inlines)
for i = #inlines-1,1,-1 do
if isSpaceBeforeCite(inlines[i], inlines[i+1]) then
inlines:remove(i)
end
end
return inlines
end
Closes: #6038
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