diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.1.1.0
+
+- Correct some documentations
+- Add `parseExprWithParseFixities` to configure parsers flexibly (e.g. parse as `++`, but interpret it as `join`)
+
 ## 0.1.0.0
 
 - Initial Release
diff --git a/egison-pattern-src-haskell-mode.cabal b/egison-pattern-src-haskell-mode.cabal
--- a/egison-pattern-src-haskell-mode.cabal
+++ b/egison-pattern-src-haskell-mode.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.0
 name:               egison-pattern-src-haskell-mode
-version:            0.1.0.0
+version:            0.1.1.0
 synopsis:
   Parser and pretty printer for Egison pattern expressions in Haskell source code
 
diff --git a/src/Language/Egison/Parser/Pattern/Mode/Haskell.hs b/src/Language/Egison/Parser/Pattern/Mode/Haskell.hs
--- a/src/Language/Egison/Parser/Pattern/Mode/Haskell.hs
+++ b/src/Language/Egison/Parser/Pattern/Mode/Haskell.hs
@@ -12,6 +12,7 @@
     Expr
   , parseExpr
   , parseExprWithFixities
+  , parseExprWithParseFixities
   -- * Converting @haskell-src-exts@'s entities
   , ParseMode
   , ParseFixity
@@ -92,7 +93,6 @@
     Left  err          -> Left err
 
 -- | Build 'Egison.Fixity' using 'Haskell.Fixity' from @haskell-src-exts@.
--- Note that a built-in constructor with special syntax, that is represented as 'Special' in 'QName', is just ignored here.
 makeFixity :: Haskell.Fixity -> Fixity
 makeFixity (Haskell.Fixity assoc prec name) = fixity
  where
@@ -146,7 +146,7 @@
 parseExpr mode@Haskell.ParseMode { Haskell.parseFilename } =
   Egison.parseExpr (makeHaskellMode mode) parseFilename
 
--- | Parse 'Expr' using 'Haskell.ParseMode' from @haskell-src-exts@, while supplying an explicit list of 'ParseFixity'.
+-- | Parse 'Expr' using 'Haskell.ParseMode' from @haskell-src-exts@, while supplying an explicit list of 'Fixity'.
 -- Note that fixities obtained from 'Haskell.ParseMode' are just ignored here.
 parseExprWithFixities
   :: MonadError (Errors String) m
@@ -154,9 +154,19 @@
   -> [Fixity]
   -> String
   -> m Expr
-parseExprWithFixities mode@Haskell.ParseMode { Haskell.parseFilename } fixities
+parseExprWithFixities mode =
+  parseExprWithParseFixities mode . mapMaybe makeParseFixity
+
+-- | Parse 'Expr' using 'Haskell.ParseMode' from @haskell-src-exts@, while supplying an explicit list of 'ParseFixity'.
+-- Note that fixities obtained from 'Haskell.ParseMode' are just ignored here.
+parseExprWithParseFixities
+  :: MonadError (Errors String) m
+  => Haskell.ParseMode
+  -> [ParseFixity]
+  -> String
+  -> m Expr
+parseExprWithParseFixities mode@Haskell.ParseMode { Haskell.parseFilename } fixities
   = Egison.parseExpr hsModeWithFixities parseFilename
  where
-  hsMode = makeHaskellMode mode
-  hsModeWithFixities =
-    hsMode { Egison.fixities = mapMaybe makeParseFixity fixities }
+  hsMode             = makeHaskellMode mode
+  hsModeWithFixities = hsMode { Egison.fixities }