diff --git a/pretty.lua b/pretty.lua
index 053f432..b41ff8c 100644
--- a/pretty.lua
+++ b/pretty.lua
@@ -192,44 +192,6 @@ local function fill_holes_in_key_value_pairs (key_value_pairs)
     table.sort(key_value_pairs, compare_key_value_pairs)
 end
 
-local function is_identifier(str)
-    -- TODO: Remove, Unused
-
-    -- An identier is defined in the lua reference guide
-
-    return str:match('^[_%a][_%w]*$') and not RESERVED_LUA_WORDS[str]
-end
-
-local function contains_only_nice_string_keys (t)
-    -- TODO: Remove, Unused
-
-    -- A "nice" string is here defined is one following the rules of lua
-    -- identifiers.
-
-    for k, _ in pairs(t) do
-        if type(k) ~= 'string' or not is_identifier(k) then
-            return false
-        end
-    end
-    return true
-end
-
-local function contains_only_nice_number_indexes (t)
-    -- TODO: Remove, Unused
-
-    -- A "nice" index is here defined as one which would be visited when using
-    -- ipairs: An integer larger than 1 and less than #t
-
-    local max_index  =  #t
-    for k, v in pairs(t) do
-        if type(k) ~= 'number' or k < 1 or max_index < k or k ~= math.floor(k) then
-            return false
-        end
-    end
-
-    return true
-end
-
 local function escape_string (str)
 
     -- Error checking
@@ -332,41 +294,6 @@ local function fix_seperator_info (l, indent_char, max_depth)
     end
 end
 
---------------------------------------------------------------------------------
--- Identifyer stuff
-
-local function is_empty_table (value)
-    -- TODO: Remove. This is unused.
-
-    if type(value) ~= 'table' then
-        error(('[pretty/internal]: Only tables allowed in function pretty.is_empty_table, but was given %s (%s)'):format(value, type(value)), 2)
-    end
-    return next(value) == nil
-end
-
-local function get_table_type (value)
-    -- TODO: Remove. This is unused.
-
-    -- Determines table type:
-    -- * Sequence:  All keys are integer in the range 1..#value
-    -- * Pure Map:  #value == 0
-    -- * Mixed:     Any other
-
-
-    if is_empty_table(value) then  return TABLE_TYPE.EMPTY  end
-
-    local is_sequence      =  contains_only_nice_number_indexes(value)
-    local only_string_keys =  contains_only_nice_string_keys(value)
-    local is_pure_map      =  (#value == 0)
-
-    -- Return type
-    if     is_sequence      then  return TABLE_TYPE.SEQUENCE
-    elseif only_string_keys then  return TABLE_TYPE.STRING_MAP
-    elseif is_pure_map      then  return TABLE_TYPE.PURE_MAP
-    else                          return TABLE_TYPE.MIXED
-    end
-end
-
 --------------------------------------------------------------------------------
 -- Formatting stuff