add export addOldDelta

Author: soulomoon

ghcide/src/Development/IDE/Core/PositionMapping.hs

@@ -11,6 +11,7 @@ module Development.IDE.Core.PositionMapping
   , toCurrentPosition
   , PositionDelta(..)
   , addDelta
+  , addOldDelta
   , idDelta
   , composeDelta
   , mkDelta
@@ -125,7 +126,7 @@ addDelta delta (PositionMapping pm) = PositionMapping (composeDelta delta pm)
 
 -- | Add a old delta onto a Mapping k n to make a Mapping (k - 1) n
 addOldDelta :: PositionDelta -> PositionMapping -> PositionMapping
-addOldDelta delta (PositionMapping pm) = PositionMapping (composeDelta pm delta )
+addOldDelta delta (PositionMapping pm) = PositionMapping (composeDelta pm delta)
 
 -- TODO: We currently ignore the right hand side (if there is only text), as
 -- that was what was done with lsp* 1.6 packages