Improve asciidoc encoding

Author: dragonstyle

src/resources/filters/layout/asciidoc.lua

@@ -24,6 +24,9 @@ function asciidocFigure(image)
   -- alt text (ok to use HTML entities since alt is expressly for HTML output)
   local altText = image.attr.attributes["alt"] or image.attr.attributes[kFigAlt] or ""
   altText = altText:gsub("\"", """)
+  altText = altText:gsub("<", "&lt;")
+  altText = altText:gsub(">", "&gt;")
+  altText = altText:gsub("&", "&amp;")
 
   -- the figure itself
   figure:extend({"image::" .. image.src .. "[\"" .. altText .. "\"]"})

src/resources/filters/quarto-post/render-asciidoc.lua

@@ -27,7 +27,7 @@ function renderAsciidoc()
         local identifier = span.identifier
         if refType(identifier) == "sec" then
           -- this is a chapter title, tear out the id and make it ourselves
-          local titleContents = pandoc.write(pandoc.Pandoc(span.content), "asciidoc")
+          local titleContents = pandoc.write(pandoc.Pandoc({span.content}), "asciidoc")
           meta['title'] = pandoc.RawInline("asciidoc", titleContents)
           meta['title-prefix'] = pandoc.RawInline("asciidoc", "[[" .. identifier .. "]]")
         end