split codeblocks have to be used

convert_transcript.lua

@@ -1,5 +1,5 @@
 #!/usr/bin/env luajit
-local version = "0.1"
+local version = "0.2.0"
 
 local input_file_name = arg[1]
 assert(input_file_name,
@@ -26,28 +26,37 @@ if link and #link > 0 then
   frontmatter[#frontmatter + 1] = "From [" .. link .. "](" .. link .. ")\n"
 end
 
+local input_lines = {}
+for line in io.lines(input_file_name) do
+  input_lines[#input_lines + 1] = line
+end
+
+local output_lines = {}
+for index, line in ipairs(input_lines) do
+  if not (line:sub(3, 3) == ":") then
+    local previous_line = input_lines[index - 1]
+    if previous_line and previous_line:sub(3, 3) == ":" then
+      output_lines[#output_lines] = "```\n" .. previous_line
+      output_lines[#output_lines + 1] = string.rep(" ", 6) .. line .. "\n```"
+    else
+      output_lines[#output_lines + 1] = "`" .. line .. "`"
+    end
+  else
+    output_lines[#output_lines + 1] = "`" .. line .. "`"
+  end
+end
+
 local output_file = io.open(output_file_name, "w")
 assert(output_file, "Could not open \"" .. output_file_name .. "\"")
 
+-- TODO redo with a concat
 for _, line in ipairs(frontmatter) do
   output_file:write(line)
   output_file:write("\n")
 end
 
-for line in io.lines(input_file_name) do
-  output_file:write("`") -- make this line a code block on its own
-
-  -- if not appearing to start with a timecode,
-  -- indent by the width of a timecode
-  if not (line:sub(3, 3) == ":") then
-    output_file:write(string.rep(" ", 6))
-  end
-
-  output_file:write(line)
-  output_file:write("`") -- close the code block
-  output_file:write("\n")
-end
-
+output_file:write(table.concat(output_lines, "\n"))
+output_file:write("\n")
 output_file:close()
 
 os.execute("pandoc --from markdown+hard_line_breaks \""