Bryan O'Sullivan avatar Bryan O'Sullivan committed a5bb6a8

Use unsafeTail in a few places, for speed

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 -- first.
 tails :: Text -> [Text]
 tails t | null t    = [empty]
-        | otherwise = t : tails (tail t)
+        | otherwise = t : tails (unsafeTail t)
 
 -- | /O(n)/ Break a 'Text' into pieces separated by the 'Char'
 -- argument, consuming the delimiter. I.e.
     search !n !s
         | null s             = (src,empty)      -- not found
         | pat `isPrefixOf` s = (take n src,s)
-        | otherwise          = search (n+1) (tail s)
+        | otherwise          = search (n+1) (unsafeTail s)
 {-# INLINE breakSubstring #-}
 
 -- | /O(n)/ 'filter', applied to a predicate and a 'Text',
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
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