[mugenizer] remove \fad tags from lines

karaoke-adjust-1sec.lua

@@ -69,6 +69,19 @@ function adjust_1sec(subs, sel)
 end
 
 
+function remove_tag(line, tag)
+    local expr = "^(.-{[^}]*)\\" .. tag .. "[^\\}]*(.*)"
+    while true do
+        before, after = line.text:match(expr)
+        if before == nil then
+            return line
+        else
+            line.text = cleantags(before .. after)
+        end
+    end
+end
+
+
 function mugenizer(subs)
     local first = nil
     local styles_different = false
@@ -107,6 +120,8 @@ function mugenizer(subs)
                 if aegisub.progress.is_cancelled() then return end
                 line = removeleadin(line)
             end
+
+            line = remove_tag(line, "fad")
         end
 
         subs[i] = line