Lua: rename `reader_extensions`/`writer_extensions` globals...

...as `Extensions`.

Update documnetation.

Include a custom extension in the documentation example.

See #8390.

5 files changed, 14 insertions, 12 deletions

diff --git a/doc/custom-readers.md b/doc/custom-readers.md
index 4d2009690..2d9938121 100644
--- a/doc/custom-readers.md
+++ b/doc/custom-readers.md
@@ -98,19 +98,20 @@ end
 Custom readers can be built such that their behavior is
 controllable through format extensions, such as `smart`,
 `citations`, or `hard-line-breaks`. Supported extensions are those
-that are present as a key in the global `reader_extensions` table.
+that are present as a key in the global `Extensions` table.
 Fields of extensions that are enabled default have the value
 `true`, while those that are supported but disabled have value
 `false`.
 
 Example: A writer with the following global table supports the
-extensions `smart` and `citations`, with the former enabled and
-the latter disabled by default:
+extensions `smart`, `citations`, and `foobar`, with `smart` enabled and
+the other two disabled by default:
 
 ``` lua
-reader_extensions = {
+Extensions = {
   smart = true,
   citations = false,
+  foobar = false
 }
 ```
 
@@ -129,7 +130,7 @@ end
 ```
 
 Extensions that are neither enabled nor disabled in the
-`reader_extensions` field are treated as unsupported by the
+`Extensions` field are treated as unsupported by the
 reader. Trying to modify such an extension via the command line
 will lead to an error.
 
diff --git a/doc/custom-writers.md b/doc/custom-writers.md
index 1d90ea722..55c64eb8a 100644
--- a/doc/custom-writers.md
+++ b/doc/custom-writers.md
@@ -53,19 +53,20 @@ then only the `Writer` function will be used.
 
 Writers can be customized through format extensions, such as
 `smart`, `citations`, or `hard_line_breaks`. The global
-`writer_extensions` table indicates supported extensions with a
+`Extensions` table indicates supported extensions with a
 key. Extensions enabled by default are assigned a true value,
 while those that are supported but disabled are assigned a false
 value.
 
 Example: A writer with the following global table supports the
-extensions `smart` and `citations`, with the former enabled and
-the latter disabled by default:
+extensions `smart`, `citations`, and `foobar`, with `smart` enabled and
+the others disabled by default:
 
 ``` lua
-writer_extensions = {
+Extensions = {
   smart = true,
   citations = false,
+  foobar = false
 }
 ```
 
diff --git a/pandoc-lua-engine/src/Text/Pandoc/Lua/Reader.hs b/pandoc-lua-engine/src/Text/Pandoc/Lua/Reader.hs
index 2c2dd369b..8e411aeb2 100644
--- a/pandoc-lua-engine/src/Text/Pandoc/Lua/Reader.hs
+++ b/pandoc-lua-engine/src/Text/Pandoc/Lua/Reader.hs
@@ -48,7 +48,7 @@ readCustom luaFile = do
     when (stat /= Lua.OK)
       Lua.throwErrorAsException
 
-    extsConf <- getglobal "reader_extensions" >>= \case
+    extsConf <- getglobal "Extensions" >>= \case
       TypeNil   -> pure $ ExtensionsConfig mempty mempty
       _         -> forcePeek $ peekExtensionsConfig top `lastly` pop 1
 
diff --git a/pandoc-lua-engine/src/Text/Pandoc/Lua/Writer.hs b/pandoc-lua-engine/src/Text/Pandoc/Lua/Writer.hs
index eeec9b6af..e310b33c8 100644
--- a/pandoc-lua-engine/src/Text/Pandoc/Lua/Writer.hs
+++ b/pandoc-lua-engine/src/Text/Pandoc/Lua/Writer.hs
@@ -61,7 +61,7 @@ writeCustom luaFile = do
 
     let writerField = "Pandoc Writer function"
 
-    extsConf <- rawgetglobal "writer_extensions" >>= \case
+    extsConf <- rawgetglobal "Extensions" >>= \case
       TypeNil   -> ExtensionsConfig mempty mempty <$ pop 1
       _         -> forcePeek $ peekExtensionsConfig top `lastly` pop 1
 
diff --git a/pandoc-lua-engine/test/extensions.lua b/pandoc-lua-engine/test/extensions.lua
index cea9a45a1..d286f5c41 100644
--- a/pandoc-lua-engine/test/extensions.lua
+++ b/pandoc-lua-engine/test/extensions.lua
@@ -6,7 +6,7 @@ function Writer (doc, opts)
   return output:format(status('smart'), status('citations'))
 end
 
-writer_extensions = {
+Extensions = {
   smart = true,
   citations = false,
 }