remove redundant classn ames and set up double border for multiple active tei:mod

modules/fontane/transform.xqm

@@ -1387,7 +1387,15 @@ declare function transfo:text($n as text())
 as item()* {
   let $followingAnchorWithModBeforeThisNode :=  $n/following::tei:anchor[@xml:id = $n/preceding::tei:mod[@spanTo]/substring-after(@spanTo, '#')]/('#' || @xml:id)
   let $allModBefore := $n/preceding::tei:mod[@spanTo = $followingAnchorWithModBeforeThisNode]
-  let $modClasses := for $mod in $allModBefore return ("modSeq" || string($mod/@seq), transfo:segStyle($mod))
+  let $modClasses :=
+      let $styleSource :=
+        for $mod in $allModBefore
+        return
+          ("modSeq" || string($mod/@seq), transfo:segStyle($mod))
+      let $styleToken := tokenize($styleSource)
+      let $style := if(index-of($styleToken, "solid")[2]) then (distinct-values($styleToken)[.!="solid"], "double") else $styleToken
+      return
+        $style
   let $handShiftNewRef := $n/preceding::tei:handShift[@new][1]/substring-after(@new, '#')
 
   return