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This allows for some code simplification and improves stability.
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The module provides a `compile` function to use strings as templates.
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API changes:
- The function T.P.Filter.applyFilters now takes a filter
environment of type `Environment`, instead of a ReaderOptions value.
The `Environment` type is exported from `T.P.Filter` and allows to
combine ReaderOptions and WriterOptions in a single value.
- Global, exported from T.P.Lua, has a new type constructor
`PANDOC_WRITER_OPTIONS`.
Closes: #5221
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Extensions are now available as a list of strings; the track-changes
settings are given as the kebab-case representation used in JSON.
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The function `pandoc.read` is updated to use the same state that was
used while parsing the main input files. This ensures that log messages
are preserved and that images embedded in the input are added to the
mediabag.
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A ReaderOptions element was left on top of the stack when the
`peekReadOptionsTable` function was invoked.
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Create truly empty table caption and body when these are empty in the
simple table.
Fixes: #7776
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Minor behavior change: plain strings nested in tables are now included
in the result string.
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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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Ensures the returned lists have the correct type (`Inlines` and
`Blocks`, respectively).
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Omit `false` boolean values, push integers as numbers.
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The default Pandoc object is now non-strict, i.e., only the parts of the
document that are accessed will be marshaled to Lua. A special type is
no longer necessary.
This change also makes it possible to use the global variable with
library functions such as `pandoc.utils.references`, or to inspect the
document contents with `walk()`.
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List with all cited references of a document.
Closes: #7752
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Retry conversion by passing a string instead of sources when the
`Reader` fails with a message that hints at an outdated function. A
deprecation notice is reported in that case.
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The first argument passed to Lua `Reader` functions is no longer a plain
string but a richer data structure. The structure can easily be
converted to a string by applying `tostring`, but is also a list with
elements that contain each the *text* and *name* of each input source as
a property of the respective name.
A small example is added to the custom reader documentation, showcasing
its use in a reader that creates a syntax-highlighted code block for
each source code file passed as input.
Existing readers must be updated.
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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 marshaling functions for pandoc's AST are extracted into a separate
package. The package comes with a number of changes:
- Pandoc's List module was rewritten in C, thereby improving error
messages.
- Lists of `Block` and `Inline` elements are marshaled using the new
list types `Blocks` and `Inlines`, respectively. These types
currently behave identical to the generic List type, but give better
error messages. This also opens up the possibility of adding
element-specific methods to these lists in the future.
- Elements of type `MetaValue` are no longer pushed as values which
have `.t` and `.tag` properties. This was already true for
`MetaString` and `MetaBool` values, which are still marshaled as Lua
strings and booleans, respectively. Affected values:
+ `MetaBlocks` values are marshaled as a `Blocks` list;
+ `MetaInlines` values are marshaled as a `Inlines` list;
+ `MetaList` values are marshaled as a generic pandoc `List`s.
+ `MetaMap` values are marshaled as plain tables and no longer
given any metatable.
- The test suite for marshaled objects and their constructors has
been extended and improved.
- A bug in Citation objects, where setting a citation's suffix
modified it's prefix, has been fixed.
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Single elements should always be treated as singleton lists in the Lua
subsystem.
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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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Using a Lua string where a list of inlines is expected will cause the
string to be split into words, replacing spaces and tabs into
`pandoc.Space()` elements and newlines into `pandoc.SoftBreak()`.
The previous behavior was to treat the string `s` as `{pandoc.Str(s)}`.
The old behavior can be recovered by wrapping the string into a table
`{s}`.
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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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Ignore errors if the normal package mechanism failed; this not only
covers the case of modules being unavailable on the system, but also
works if the modules are present, but fail to load for some reason.
This makes the built-in package version a true fallback.
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This restores the old behavior; argument order had been switched
accidentally in pandoc 2.15.
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The module is shipped with LPeg.
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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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Compiles the 'lpeg' library (Parsing Expression Grammars For Lua) into
the program.
Package maintainers may choose to rely on package dependencies to make
lpeg available, in which case they can compile the with the constraint
`lpeg +rely-on-shared-lpeg-library`.
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Closes: #7658
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Fixes a regression introduced in 2.15.
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Fixes a regression introduced in 2.15.
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Fixes a regression introduced in 2.15 which required users to always
specify an Attr value when constructing a Code element.
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Comparisons of Citation values are performed in Haskell; values are
equal if they represent the same Haskell value. Converting a Citation
value to a string now yields its native Haskell string representation.
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This was a regression introduced in version 2.15.
Fixes: #7647
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