progress implementing help-prev-match for vector

fcore/normal-mode/make-normal-delete.sml

@@ -778,7 +778,8 @@ struct
   fun deleteToPrevMatch (app: app_type, count, time) =
     let
       val {cursorIdx, searchList, ...} = app
-      val newCursorIdx = SearchList.prevMatch (cursorIdx, searchList, count)
+      val newCursorIdx =
+        PersistentVector.prevMatch (cursorIdx, searchList, count)
     in
       if newCursorIdx = ~1 orelse newCursorIdx >= cursorIdx then
         NormalFinish.clearMode app

fcore/normal-mode/normal-move.sml

@@ -494,7 +494,8 @@ struct
         , visualScrollColumn
         , ...
         } = app
-      val newCursorIdx = PersistentVector.nextMatch (cursorIdx, searchList, count)
+      val newCursorIdx =
+        PersistentVector.nextMatch (cursorIdx, searchList, count)
     in
       if newCursorIdx = ~1 then
         NormalFinish.clearMode app
@@ -506,7 +507,8 @@ struct
   fun moveToPrevMatch (app: app_type, count) =
     let
       val {cursorIdx, searchList, buffer, bufferModifyTime, ...} = app
-      val newCursorIdx = SearchList.prevMatch (cursorIdx, searchList, count)
+      val newCursorIdx =
+        PersistentVector.prevMatch (cursorIdx, searchList, count)
     in
       if newCursorIdx = ~1 then
         NormalFinish.clearMode app

fcore/normal-mode/normal-yank.sml

@@ -188,7 +188,7 @@ struct
   fun yankToPrevMatch (app: app_type, count) =
     let
       val {cursorIdx, searchList, buffer, ...} = app
-      val low = SearchList.prevMatch (cursorIdx, searchList, count)
+      val low = PersistentVector.prevMatch (cursorIdx, searchList, count)
     in
       if low = ~1 orelse low >= cursorIdx then
         NormalFinish.clearMode app