restructure bracketed enclosure parsing

1 files changed, 25 insertions, 8 deletions

diff --git a/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua b/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
index ca724d4..230f351 100644
--- a/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
+++ b/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
@@ -169,26 +169,40 @@ function Statements (block)
       goto continue
     end
 
-    -- unenclosed, entering bracketed enclosure
-    -- TODO: support nested bracketed enclosure
+    -- unenclosed
+    -- TODO: support backslash except immediately before bracket
     if not (bracketed or braced) then
-      _, a, pre = string.find(el.text, "([^\\]?)%[")
-      if a and pre == '' then
+      _, x, s = string.find(el.text, "^([^%[\\]*)")
+      if x then
+        a = x + 1
+      else
+        a = 1
+      end
+      if el.text:sub(a, a) == "[" then
+
+        -- entering bracketed enclosure
         bracketed = true
         pos = a + 1
 
       -- staying unenclosed
       else
         table.insert(stack, el)
+        goto continue
       end
     end
 
-    -- in bracketed enclosure, entering braced enclosure
-    -- TODO: support backslash in bracket enclosure
+    -- in bracketed enclosure
+    -- TODO: support backslash except immediately before bracket/brace
     -- TODO: support nested bracket enclosure
     if bracketed and not braced then
-      _, c, s = string.find(el.text, "^([^%[%]}\\]*)%]{?", pos)
-      if c then
+      _, x, s = string.find(el.text, "^([^%[%]}\\]*)", pos)
+      if x then
+        b = x + 1
+      else
+        b = pos
+      end
+      if el.text:sub(b, b) == "]" then
+        c = b + 1
 
         -- entering braced enclosure
         if el.text:sub(c, c) == "{" then
@@ -200,6 +214,9 @@ function Statements (block)
         else
           bracketed = false
           braced = false
+
+          -- TODO: parse remains of Str
+          goto continue
         end
       end
     end