Add quarto.utils.string_to_* functions

Author: cwickham

docs/extensions/lua-api.qmd

@@ -58,9 +58,11 @@ Various utility functions are provided:
 
 | Function                          | Description                                                                                                                                                                                    |
 |-------------------|-----------------------------------------------------|
-| `quarto.version`                | Return the current Quarto version as a `pandoc.Version` object.                                                                                                                                |
-| `quarto.log.output(obj)`          | Dump a text representation of the passed object to stdout.                                                                                                                                     |
-| `quarto.utils.resolve_path(path)` | Compute the full path to a file that is installed alongside your extension's Lua script. This is useful for *internal* resources that your filter needs but should not be visible to the user. |
+| `quarto.version`                             | Return the current Quarto version as a `pandoc.Version` object.                                                                                                                                |
+| `quarto.log.output(obj)`                     | Dump a text representation of the passed object to stdout.                                                                                                                                     |
+| `quarto.utils.resolve_path(path)`            | Compute the full path to a file that is installed alongside your extension's Lua script. This is useful for *internal* resources that your filter needs but should not be visible to the user. |
+| `quarto.utils.string_to_inlines(path, sep)`  | Converts a string to a list of Pandoc Inlines, processing any Quarto custom syntax in the string.                                                                                              |
+| `quarto.utils.string_to_blocks(path)`        | Converts a string to a list of Pandoc Blocks, processing any Quarto custom syntax in the string.                                                                                               |
 
 Quarto includes the [pandoc-lua-logging](https://github.com/wlupton/pandoc-lua-logging) library, which should be used in preference to the dump function. For example, you can examine an element passed to a filter function as follows: