more compatibility fixes

lib/mmmd/blankshell.rb

@@ -1016,7 +1016,7 @@ module PointBlank
       # @param before [String, ::PointBlank::DOM::DOMObject]
       # @param after [String, ::PointBlank::DOM::DOMObject]
       # @return [Array<Array(String, Class, Symbol), String>]
-      def self.tokenize(string, before, after)
+      def self.tokenize(string, _before, _after)
         [string]
       end
 
@@ -1145,17 +1145,10 @@ module PointBlank
     class CodeInline < NullInline
       # (see ::PointBlank::Parsing::NullInline#tokenize)
       def self.tokenize(string, *_lookaround)
-        open = {}
         iterate_tokens(string, "`") do |_before, current_text, matched|
           if matched
             match = current_text.match(/^`+/)[0]
-            if open[match]
-              open[match] = nil
-              [match, self, :close]
-            else
-              open[match] = true
-              [match, self, :open]
-            end
+            [match, self, :open]
           else
             current_text[0]
           end
@@ -1172,9 +1165,9 @@ module PointBlank
           text = (part.is_a?(Array) ? part.first : part)
           buffer += text
           next unless part.is_a? Array
+          next if idx.zero?
 
-          break (cutoff = idx) if part.first == opening &&
-                                  part.last == :close
+          break (cutoff = idx) if part.first == opening
         end
         buffer = construct_literal(buffer[opening.length..(-1 - opening.length)])
         [cutoff.positive? ? build([buffer]) : opening, parts[(cutoff + 1)..]]
@@ -1345,7 +1338,11 @@ module PointBlank
         when String
           bfr[-1]
         when ::PointBlank::DOM::DOMObject
-          "."
+          if bfr.is_a?(::PointBlank::DOM::Text)
+            bfr.content[-1]
+          else
+            extract_left(bfr.children.last)
+          end
         when Array
           bfr.first[-1]
         end
@@ -1359,7 +1356,11 @@ module PointBlank
         when String
           afr[0]
         when ::PointBlank::DOM::DOMObject
-          "."
+          if afr.is_a?(::PointBlank::DOM::Text)
+            afr.content[0]
+          else
+            extract_left(afr.children.first)
+          end
         when Array
           afr.first[0]
         end
@@ -1428,8 +1429,9 @@ module PointBlank
                                ((blk.first.length % 3).zero? &&
                                 (closer.first.length % 3).zero?))
             (open ? capture : before).prepend(blk)
-            next unless blk.is_a?(Array)
-            return backlog unless blk[1].check_contents(capture)
+            next unless blk.is_a?(Array) && !open
+
+            return backlog unless closer[1].check_contents(capture)
           end
           return backlog if open
 

mmmd.gemspec

@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name                  = "mmmd"
-  spec.version               = "0.1.1"
+  spec.version               = "0.1.2"
   spec.summary               = "Modular, compliant Markdown processor"
   spec.description           = <<~DESC
     MMMD (short for Mark My Manuscript Down) is a Markdown processor