From e5a0f645d20ddfa9f2e558d5bf336dd687b3d3b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benno=20F=C3=BCnfst=C3=BCck?= <benno.fuenfstueck@gmail.com>
Date: Sun, 3 Aug 2014 16:20:09 +0200
Subject: [PATCH] trifecta: allow _ at identifier start

---
 Nix/Parser/Library.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Nix/Parser/Library.hs b/Nix/Parser/Library.hs
index ca996e4..bad657e 100644
--- a/Nix/Parser/Library.hs
+++ b/Nix/Parser/Library.hs
@@ -83,7 +83,7 @@ import qualified Data.HashSet as HashSet
 identStyle :: IdentifierStyle Parser
 identStyle = IdentifierStyle
   { _styleName = "nix"
-  , _styleStart = letter
+  , _styleStart = letter <|> char '_'
   , _styleLetter = alphaNum <|> oneOf "_."
   , _styleReserved = HashSet.fromList reservedNames
   , _styleHighlight = Identifier