Finish taking the multiple issues which Discourse had with the very large number of posts in this particular topic

goss-restorethread.rb

@@ -1049,12 +1049,12 @@ class GossamerForumsImporter < ImportScripts::Base
 #    sanitized_message.sub!(/\n?\[signature\]\n?\z/, '')
 #    sanitized_message.gsub(/\n?\[signature\]\n?/, '')
     sanitized_message.gsub!(/[\r\n]*\[signature\][\r\n]*/, '')
+
+    # Remove [inline] style inlining.
     sanitized_message.gsub!(/[\r\n]*\[inline.*\][\r\n]*/, '')
 
-    # Ensure minimum length
+    # Remove ![http://data:image/, etc. as this is not supported.
-    if sanitized_message.strip.empty? || sanitized_message.length < 5
+    sanitized_message.gsub!(/!\[data:image\/[^\]]+\]\([^)]+\)/, '')
-      sanitized_message = "Empty post contents."
-    end
 
     # Ensure sentence structure
     unless sanitized_message.match?(/[.!?]\s|[.!?]$/)
@@ -1079,6 +1079,11 @@ class GossamerForumsImporter < ImportScripts::Base
     # Convert inline image syntax from `!(url)` to `![url](url)`
     sanitized_message.gsub!(/!\((http[s]?:\/\/[^\)]+)\)/, '![\1](\1)')
 
+    # Ensure minimum length
+    if sanitized_message.strip.empty? || sanitized_message.length < 5
+      sanitized_message = "Empty post contents."
+    end
+
     sanitized_message
   end