haskell/haskell-mode — pull request #131 by Imbalism (2013-04-04 23:53:31+00:00)
Title: trim string value before compare in haskell-indent

in haskell-indent,
```haskell
oneChar :: Char -> Doc
oneChar char = undefine
```
The above can be correctly indent by cycle-indent while the below can't
```haskell
oneChar :: Char -> Doc
oneChar char = undefine
```

It is because we are using "string=" to compare "oneChar " and "oneChar ", the indenter thinks they are not the same variables.