         # so ignore such cases. Are there other times an indentation
         # could possibly follow a '+'?
         previous = tokenApi.peek(-2)
-        isInterpIndent = previous and previous[0] == '+'
+        isInterpIndent = previous and previous[0] is '+'
 
         # Ignore the indentation inside of an array, so that
         # we can allow things like:


    # Return an error if the given indentation token is not correct.
    lintToken: (token, tokenApi) ->
        [type, numIndents, lineNumber] = token

        if type in [ "[", "]" ]
            @lintArray(token)

    # Lint the given array token.
    lintArray : (token) ->
        # Track the array token pairs
        if token[0] is '['
            @arrayTokens.push(token)
        else if token[0] is ']'
            @arrayTokens.pop()
        # Return null, since we're not really linting
        # anything here.
