From 6e8bf1f378f0595b1f076c0e35369f6c8395beca Mon Sep 17 00:00:00 2001
From: atusy <30277794+atusy@users.noreply.github.com>
Date: Mon, 19 May 2025 09:16:24 +0900
Subject: [PATCH 1/2] format(stylua): on lua filters

---
 inst/lua/blocks-to-inlines.lua | 11 +++----
 inst/lua/cite.lua              | 10 +++---
 inst/lua/inline-code.lua       | 18 +++++------
 inst/lua/math.lua              | 56 +++++++++++++++-------------------
 inst/lua/smart.lua             | 12 ++++----
 5 files changed, 50 insertions(+), 57 deletions(-)

diff --git a/inst/lua/blocks-to-inlines.lua b/inst/lua/blocks-to-inlines.lua
index 497ab3d..9c04fd5 100644
--- a/inst/lua/blocks-to-inlines.lua
+++ b/inst/lua/blocks-to-inlines.lua
@@ -1,12 +1,11 @@
 function Meta(meta)
-  sep = meta.sep_blocks and (
-      meta.sep_blocks.t and meta.sep_blocks or {pandoc.Str(meta.sep_blocks)}
-    ) or {pandoc.LineBreak(), pandoc.LineBreak()}
+	sep = meta.sep_blocks and (meta.sep_blocks.t and meta.sep_blocks or { pandoc.Str(meta.sep_blocks) })
+		or { pandoc.LineBreak(), pandoc.LineBreak() }
 end
 
 function Div(div)
-  div.content = {pandoc.Para(pandoc.utils.blocks_to_inlines(div.content, sep))}
-  return div
+	div.content = { pandoc.Para(pandoc.utils.blocks_to_inlines(div.content, sep)) }
+	return div
 end
 
-return {{Meta = Meta}, {Div = Div}}
+return { { Meta = Meta }, { Div = Div } }
diff --git a/inst/lua/cite.lua b/inst/lua/cite.lua
index 82a9435..bd6a64d 100644
--- a/inst/lua/cite.lua
+++ b/inst/lua/cite.lua
@@ -1,12 +1,12 @@
 cite = {}
 
 function Cite(elem)
-  table.insert(cite, elem)
-  table.insert(cite, pandoc.Space())
+	table.insert(cite, elem)
+	table.insert(cite, pandoc.Space())
 end
 
 function Pandoc(doc)
-  table.remove(cite)
-  doc.blocks = {pandoc.Para(cite)}
-  return doc
+	table.remove(cite)
+	doc.blocks = { pandoc.Para(cite) }
+	return doc
 end
diff --git a/inst/lua/inline-code.lua b/inst/lua/inline-code.lua
index fd60cd9..3dd967b 100644
--- a/inst/lua/inline-code.lua
+++ b/inst/lua/inline-code.lua
@@ -1,11 +1,11 @@
 function Code(elem)
-  if elem.attributes['font.family'] == nil then
-    elem.attributes['font.family'] = 'monospace'
-  end
-  if elem.attributes['shading.color'] == nil then
-    elem.attributes['shading.color'] = '#f8f8f8'
-  end
-  local span = pandoc.Span(elem.text)
-  span.attr = elem.attr
-  return span
+	if elem.attributes["font.family"] == nil then
+		elem.attributes["font.family"] = "monospace"
+	end
+	if elem.attributes["shading.color"] == nil then
+		elem.attributes["shading.color"] = "#f8f8f8"
+	end
+	local span = pandoc.Span(elem.text)
+	span.attr = elem.attr
+	return span
 end
diff --git a/inst/lua/math.lua b/inst/lua/math.lua
index 3e541a3..091d627 100644
--- a/inst/lua/math.lua
+++ b/inst/lua/math.lua
@@ -16,46 +16,40 @@ https://github.com/atusy/lua-filters/blob/master/lua/math.lua
 is_pandoc_2_10 = (PANDOC_VERSION[1] >= 2) and (PANDOC_VERSION[2] >= 10)
 
 if pandoc.system.os ~= "mingw32" then
-  function math2html(text)
-    return pandoc.pipe(cmd, {"-t", "html", "-f", "markdown"}, text)
-  end
+	function math2html(text)
+		return pandoc.pipe(cmd, { "-t", "html", "-f", "markdown" }, text)
+	end
 else
-  if is_pandoc_2_10 then
-    with_temporary_directory = pandoc.system.with_temporary_directory
-  else
-    with_temporary_directory = function(ignored, callback)
-      return callback(temporary_directory)
-    end
-  end
-
-  math2html = function(text)
-    local function callback(directory)
-      local path = directory .. "\\math-rendered-by-lua-filter.html"
-      pandoc.pipe(cmd, {"-t", "html", "-f", "markdown", "-o", path}, text)
-      return io.open(path):read("a")
-    end
-
-    return with_temporary_directory("write_html_math", callback)
-  end
+	if is_pandoc_2_10 then
+		with_temporary_directory = pandoc.system.with_temporary_directory
+	else
+		with_temporary_directory = function(ignored, callback)
+			return callback(temporary_directory)
+		end
+	end
+
+	math2html = function(text)
+		local function callback(directory)
+			local path = directory .. "\\math-rendered-by-lua-filter.html"
+			pandoc.pipe(cmd, { "-t", "html", "-f", "markdown", "-o", path }, text)
+			return io.open(path):read("a")
+		end
+
+		return with_temporary_directory("write_html_math", callback)
+	end
 end
 
 function Meta(elem)
-  cmd = elem["pandoc-path"] and (
-    pandoc.utils.stringify(elem["pandoc-path"])
-  ) or "pandoc"
+	cmd = elem["pandoc-path"] and (pandoc.utils.stringify(elem["pandoc-path"])) or "pandoc"
 
-  temporary_directory = elem["temporary-directory"] and (
-    pandoc.utils.stringify(elem["temporary-directory"])
-  ) or "."
+	temporary_directory = elem["temporary-directory"] and (pandoc.utils.stringify(elem["temporary-directory"])) or "."
 end
 
 function Math(elem)
-  return pandoc.read(
-    math2html("$" .. elem.text:gsub("[\n\r]", "") .. "$"), "html"
-  ).blocks[1].content[1].content
+	return pandoc.read(math2html("$" .. elem.text:gsub("[\n\r]", "") .. "$"), "html").blocks[1].content[1].content
 end
 
 return {
-  {Meta = Meta},
-  {Math = Math}
+	{ Meta = Meta },
+	{ Math = Math },
 }
diff --git a/inst/lua/smart.lua b/inst/lua/smart.lua
index 4f526f1..d343fd0 100644
--- a/inst/lua/smart.lua
+++ b/inst/lua/smart.lua
@@ -15,13 +15,13 @@ https://github.com/atusy/lua-filters/blob/master/lua/smart.lua
 ]]
 
 local quotes = {
-  SingleQuote = {pandoc.Str("‘"), pandoc.Str("’")},
-  DoubleQuote = {pandoc.Str("“"), pandoc.Str("”")}
+	SingleQuote = { pandoc.Str("‘"), pandoc.Str("’") },
+	DoubleQuote = { pandoc.Str("“"), pandoc.Str("”") },
 }
 
 function Quoted(elem)
-  local q = quotes[elem.quotetype]
-  table.insert(elem.content, 1, q[1])
-  table.insert(elem.content, q[2])
-  return elem.content
+	local q = quotes[elem.quotetype]
+	table.insert(elem.content, 1, q[1])
+	table.insert(elem.content, q[2])
+	return elem.content
 end

From 0f0b54f4971b779a4d71a98a3f68ca2066ae3127 Mon Sep 17 00:00:00 2001
From: atusy <30277794+atusy@users.noreply.github.com>
Date: Mon, 19 May 2025 09:31:59 +0900
Subject: [PATCH 2/2] fix(lua): avoid unintentional global variables

---
 inst/lua/blocks-to-inlines.lua |  2 ++
 inst/lua/cite.lua              |  2 +-
 inst/lua/math.lua              | 22 ++++++++++++----------
 3 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/inst/lua/blocks-to-inlines.lua b/inst/lua/blocks-to-inlines.lua
index 9c04fd5..7f8100d 100644
--- a/inst/lua/blocks-to-inlines.lua
+++ b/inst/lua/blocks-to-inlines.lua
@@ -1,3 +1,5 @@
+local sep = {}
+
 function Meta(meta)
 	sep = meta.sep_blocks and (meta.sep_blocks.t and meta.sep_blocks or { pandoc.Str(meta.sep_blocks) })
 		or { pandoc.LineBreak(), pandoc.LineBreak() }
diff --git a/inst/lua/cite.lua b/inst/lua/cite.lua
index bd6a64d..1490e2d 100644
--- a/inst/lua/cite.lua
+++ b/inst/lua/cite.lua
@@ -1,4 +1,4 @@
-cite = {}
+local cite = {}
 
 function Cite(elem)
 	table.insert(cite, elem)
diff --git a/inst/lua/math.lua b/inst/lua/math.lua
index 091d627..14137ad 100644
--- a/inst/lua/math.lua
+++ b/inst/lua/math.lua
@@ -13,40 +13,42 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 https://github.com/atusy/lua-filters/blob/master/lua/math.lua
 ]]
-is_pandoc_2_10 = (PANDOC_VERSION[1] >= 2) and (PANDOC_VERSION[2] >= 10)
+local is_pandoc_2_10 = (PANDOC_VERSION[1] >= 2) and (PANDOC_VERSION[2] >= 10)
+
+local L = {}
 
 if pandoc.system.os ~= "mingw32" then
-	function math2html(text)
+	function L.math2html(cmd, text)
 		return pandoc.pipe(cmd, { "-t", "html", "-f", "markdown" }, text)
 	end
 else
 	if is_pandoc_2_10 then
-		with_temporary_directory = pandoc.system.with_temporary_directory
+		L.with_temporary_directory = pandoc.system.with_temporary_directory
 	else
-		with_temporary_directory = function(ignored, callback)
-			return callback(temporary_directory)
+		function L.with_temporary_directory(_, callback)
+			return callback(L.temporary_directory)
 		end
 	end
 
-	math2html = function(text)
+	function L.math2html(cmd, text)
 		local function callback(directory)
 			local path = directory .. "\\math-rendered-by-lua-filter.html"
 			pandoc.pipe(cmd, { "-t", "html", "-f", "markdown", "-o", path }, text)
 			return io.open(path):read("a")
 		end
 
-		return with_temporary_directory("write_html_math", callback)
+		return L.with_temporary_directory("write_html_math", callback)
 	end
 end
 
 function Meta(elem)
-	cmd = elem["pandoc-path"] and (pandoc.utils.stringify(elem["pandoc-path"])) or "pandoc"
+	L.cmd = elem["pandoc-path"] and (pandoc.utils.stringify(elem["pandoc-path"])) or "pandoc"
 
-	temporary_directory = elem["temporary-directory"] and (pandoc.utils.stringify(elem["temporary-directory"])) or "."
+	L.temporary_directory = elem["temporary-directory"] and (pandoc.utils.stringify(elem["temporary-directory"])) or "."
 end
 
 function Math(elem)
-	return pandoc.read(math2html("$" .. elem.text:gsub("[\n\r]", "") .. "$"), "html").blocks[1].content[1].content
+	return pandoc.read(L.math2html(L.cmd, "$" .. elem.text:gsub("[\n\r]", "") .. "$"), "html").blocks[1].content[1].content
 end
 
 return {