cover non-Str elements representing bracket enclosure in Markdown

1 files changed, 19 insertions, 0 deletions

diff --git a/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua b/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
index 349cf2f..952c47d 100644
--- a/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
+++ b/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
@@ -66,6 +66,12 @@ local Enclosure = {
   BRACED = "3",
 }
 
+-- element types that represents bracket enclosure in Markdown
+local ElementTypeIsBracketing = {
+  Image = true,
+  Link = true,
+}
+
 -- TODO: cover non-ASCII Unicode characters
 -- @see <https://www.lua.org/manual/5.4/manual.html#6.5>
 --- curie_prefix - CURIE prefix component as set of chars
@@ -224,10 +230,23 @@ function Statements (block)
     -- non-string element
     if el.t ~= 'Str' then
 
+      -- specific elements represent bracketing
+      if enclosure == Enclosure.NONE then
+        if ElementTypeIsBracketing[el.t] then
+          enclosure = Enclosure.BRACKETED_DONE
+        end
+
+      -- disqualify bracketing not directly followed by brace
+      elseif enclosure == Enclosure.BRACKETED_DONE then
+        enclosure = Enclosure.NONE
+      end
+
+      -- collect element, except in braced enclosure
       -- TODO: support mixed-use braced enclosure
       if enclosure ~= Enclosure.BRACED then
         table.insert(stack, el)
       end
+
       goto continue
     end