From 74d5923767607c935fff45129486ff9c4251c283 Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Wed, 6 Dec 2017 17:31:40 +1100
Subject: [PATCH] Move to consistent whitespace style

---
 examples/date_arithmetic.lua |  32 +++---
 examples/os_date.lua         |  14 +--
 luatz/gettime.lua            |  42 +++----
 luatz/init.lua               |  34 +++---
 luatz/parse.lua              |  28 ++---
 luatz/strftime.lua           | 198 ++++++++++++++++----------------
 luatz/timetable.lua          | 212 +++++++++++++++++------------------
 luatz/tzcache.lua            |  24 ++--
 luatz/tzfile.lua             | 142 +++++++++++------------
 luatz/tzinfo.lua             |  68 +++++------
 spec/parse_spec.lua          |  14 +--
 spec/timetable_spec.lua      | 178 ++++++++++++++---------------
 12 files changed, 493 insertions(+), 493 deletions(-)

diff --git a/examples/date_arithmetic.lua b/examples/date_arithmetic.lua
index c1148fb..4065122 100644
--- a/examples/date_arithmetic.lua
+++ b/examples/date_arithmetic.lua
@@ -1,33 +1,33 @@
 local luatz = require "luatz"
 
 -- We do this a few times ==> Convert a timestamp to timetable and normalise
-local function ts2tt ( ts )
-	return luatz.timetable.new_from_timestamp ( ts )
+local function ts2tt(ts)
+	return luatz.timetable.new_from_timestamp(ts)
 end
 
 -- Get the current time in UTC
-local utcnow = luatz.time ( )
-local now = ts2tt ( utcnow )
-print ( now , "now (UTC)" )
+local utcnow = luatz.time()
+local now = ts2tt(utcnow)
+print(now, "now (UTC)")
 
 -- Get a new time object 6 months from now
-local x = now:clone ( )
+local x = now:clone()
 x.month = x.month + 6
-x:normalise ( )
-print ( x , "6 months from now" )
+x:normalise()
+print(x, "6 months from now")
 
 -- Find out what time it is in Melbourne at the moment
-local melbourne = luatz.get_tz ( "Australia/Melbourne" )
-local now_in_melbourne = ts2tt ( melbourne:localise ( utcnow ) )
-print ( now_in_melbourne , "Melbourne" )
+local melbourne = luatz.get_tz("Australia/Melbourne")
+local now_in_melbourne = ts2tt(melbourne:localise(utcnow))
+print(now_in_melbourne, "Melbourne")
 
 -- Six months from now in melbourne (so month is incremented; but still the same time)
-local m = now_in_melbourne:clone ( )
+local m = now_in_melbourne:clone()
 m.month = m.month + 6
-m:normalise ( )
-print ( m , "6 months from now in melbourne" )
+m:normalise()
+print(m, "6 months from now in melbourne")
 
 -- Convert time back to utc; a daylight savings transition may have taken place!
 -- There may be 2 results, but for we'll ignore the second possibility
-local c , _ = melbourne:utctime ( m:timestamp( ) )
-print ( ts2tt ( c ) , "6 months from now in melbourne converted to utc" )
+local c, _ = melbourne:utctime(m:timestamp())
+print(ts2tt(c), "6 months from now in melbourne converted to utc")
diff --git a/examples/os_date.lua b/examples/os_date.lua
index deac08b..ad254ce 100644
--- a/examples/os_date.lua
+++ b/examples/os_date.lua
@@ -6,19 +6,19 @@ local gettime = require "luatz.gettime".gettime
 local new_from_timestamp = require "luatz.timetable".new_from_timestamp
 local get_tz = require "luatz.tzcache".get_tz
 
-local function os_date ( format_string , timestamp )
+local function os_date(format_string, timestamp)
 	format_string = format_string or "%c"
-	timestamp = timestamp or gettime ( )
-	if format_string:sub ( 1 , 1 ) == "!" then -- UTC
-		format_string = format_string:sub ( 2 )
+	timestamp = timestamp or gettime()
+	if format_string:sub(1, 1) == "!" then -- UTC
+		format_string = format_string:sub(2)
 	else -- Localtime
-		timestamp = get_tz ( ):localise ( timestamp )
+		timestamp = get_tz():localise(timestamp)
 	end
-	local tt = new_from_timestamp ( timestamp )
+	local tt = new_from_timestamp(timestamp)
 	if format_string == "*t" then
 		return tt
 	else
-		return tt:strftime ( format_string )
+		return tt:strftime(format_string)
 	end
 end
 
diff --git a/luatz/gettime.lua b/luatz/gettime.lua
index d3eee80..4d6f45a 100644
--- a/luatz/gettime.lua
+++ b/luatz/gettime.lua
@@ -1,34 +1,34 @@
-local _M = { }
+local _M = {}
 
-_M.source , _M.resolution , _M.gettime = (function()
-	local has_syscall , syscall = pcall ( require , "syscall" )
+_M.source, _M.resolution, _M.gettime = (function()
+	local has_syscall, syscall = pcall(require, "syscall")
 	if has_syscall and syscall.clock_gettime and syscall.c.CLOCK then
 		local clock_id = syscall.c.CLOCK.REALTIME
-		local function timespec_to_number ( timespec )
-			return tonumber ( timespec.tv_sec ) + tonumber ( timespec.tv_nsec ) * 1e-9
+		local function timespec_to_number(timespec)
+			return tonumber(timespec.tv_sec) + tonumber(timespec.tv_nsec) * 1e-9
 		end
-		return "syscall.clock_gettime(CLOCK_REALTIME)" ,
-			syscall.clock_getres and timespec_to_number ( syscall.clock_getres ( clock_id ) ) or 1e-9 ,
-			function ( )
-				return timespec_to_number ( syscall.clock_gettime ( clock_id ) )
+		return "syscall.clock_gettime(CLOCK_REALTIME)",
+			syscall.clock_getres and timespec_to_number(syscall.clock_getres(clock_id)) or 1e-9,
+			function()
+				return timespec_to_number(syscall.clock_gettime(clock_id))
 			end
 	end
 
-	local has_unix , unix = pcall ( require , "unix" )
+	local has_unix, unix = pcall(require, "unix")
 	-- On Apple devices lunix only uses gettimeofday()
 	if has_unix and unix.clock_gettime and unix.uname and unix.uname().sysname ~= "Darwin" then
-		return "unix.clock_gettime(CLOCK_REALTIME)" , 1e-9 , function ( )
-			return unix.clock_gettime ( )
+		return "unix.clock_gettime(CLOCK_REALTIME)", 1e-9, function()
+			return unix.clock_gettime()
 		end
 	end
 
 	if has_syscall and syscall.gettimeofday then
-		local function timeval_to_number ( timeval )
-			return tonumber ( timeval.tv_sec ) + tonumber ( timeval.tv_nsec ) * 1e-6
+		local function timeval_to_number(timeval)
+			return tonumber(timeval.tv_sec) + tonumber(timeval.tv_nsec) * 1e-6
 		end
-		return "syscall.gettimeofday()" , 1e-6 ,
-			function ( )
-				return timeval_to_number ( syscall.gettimeofday ( ) )
+		return "syscall.gettimeofday()", 1e-6,
+			function()
+				return timeval_to_number(syscall.gettimeofday())
 			end
 	end
 
@@ -36,18 +36,18 @@ _M.source , _M.resolution , _M.gettime = (function()
 		return "unix.gettimeofday()", 1e-6, unix.gettimeofday
 	end
 
-	local has_socket , socket = pcall ( require , "socket" )
+	local has_socket, socket = pcall(require, "socket")
 	if has_socket and socket.gettime then
 		-- on windows, this uses GetSystemTimeAsFileTime, which has resolution of 1e-7
 		-- on linux, this uses gettimeofday, which has resolution of 1e-6
-		return "socket.gettime()" , 1e-6 , socket.gettime
+		return "socket.gettime()", 1e-6, socket.gettime
 	end
 
 	if ngx and ngx.now then -- luacheck: ignore 113
-		return "ngx.now()" , 1e-3 , ngx.now -- luacheck: ignore 113
+		return "ngx.now()", 1e-3, ngx.now -- luacheck: ignore 113
 	end
 
-	return "os.time()" , 1 , os.time
+	return "os.time()", 1, os.time
 end)()
 
 return _M
diff --git a/luatz/init.lua b/luatz/init.lua
index 1a6c835..4423189 100644
--- a/luatz/init.lua
+++ b/luatz/init.lua
@@ -1,9 +1,9 @@
 local _M = {
-	gettime = require "luatz.gettime" ;
-	parse = require "luatz.parse" ;
-	strftime = require "luatz.strftime" ;
-	timetable = require "luatz.timetable" ;
-	tzcache = require "luatz.tzcache" ;
+	gettime = require "luatz.gettime";
+	parse = require "luatz.parse";
+	strftime = require "luatz.strftime";
+	timetable = require "luatz.timetable";
+	tzcache = require "luatz.tzcache";
 }
 
 --- Top-level aliases for common functions
@@ -13,28 +13,28 @@ _M.get_tz = _M.tzcache.get_tz
 
 --- Handy functions
 
-_M.time_in = function ( tz , now )
-	return _M.get_tz ( tz ):localize ( now )
+_M.time_in = function(tz, now)
+	return _M.get_tz(tz):localize(now)
 end
 
-_M.now = function ( )
-	local ts = _M.gettime.gettime ( )
-	return _M.timetable.new_from_timestamp ( ts )
+_M.now = function()
+	local ts = _M.gettime.gettime()
+	return _M.timetable.new_from_timestamp(ts)
 end
 
 --- C-like functions
 
-_M.gmtime = function ( ts )
-	return _M.timetable.new_from_timestamp ( ts )
+_M.gmtime = function(ts)
+	return _M.timetable.new_from_timestamp(ts)
 end
 
-_M.localtime = function ( ts )
-	ts = _M.time_in ( nil , ts )
-	return _M.gmtime ( ts )
+_M.localtime = function(ts)
+	ts = _M.time_in(nil, ts)
+	return _M.gmtime(ts)
 end
 
-_M.ctime = function ( ts )
-	return _M.strftime.asctime ( _M.localtime ( ts ) )
+_M.ctime = function(ts)
+	return _M.strftime.asctime(_M.localtime(ts))
 end
 
 return _M
diff --git a/luatz/parse.lua b/luatz/parse.lua
index 648d538..089dd0e 100644
--- a/luatz/parse.lua
+++ b/luatz/parse.lua
@@ -5,36 +5,36 @@ local new_timetable = require "luatz.timetable".new
 -- Return value is not normalised (this preserves a leap second)
 -- If the timestamp is only partial (i.e. missing "Z" or time offset) then `tz_offset` will be nil
 -- TODO: Validate components are within their boundarys (e.g. 1 <= month <= 12)
-local function rfc_3339 ( str , init )
-	local year , month , day , hour , min , sec , patt_end = str:match ( "^(%d%d%d%d)%-(%d%d)%-(%d%d)[Tt](%d%d%.?%d*):(%d%d):(%d%d)()" , init ) -- luacheck: ignore 631
+local function rfc_3339(str, init)
+	local year, month, day, hour, min, sec, patt_end = str:match("^(%d%d%d%d)%-(%d%d)%-(%d%d)[Tt](%d%d%.?%d*):(%d%d):(%d%d)()", init) -- luacheck: ignore 631
 	if not year then
 		return nil, "Invalid RFC 3339 timestamp"
 	end
-	year  = tonumber ( year )
-	month = tonumber ( month )
-	day   = tonumber ( day )
-	hour  = tonumber ( hour )
-	min   = tonumber ( min )
-	sec   = tonumber ( sec )
+	year  = tonumber(year)
+	month = tonumber(month)
+	day   = tonumber(day)
+	hour  = tonumber(hour)
+	min   = tonumber(min)
+	sec   = tonumber(sec)
 
-	local tt = new_timetable ( year , month , day , hour , min , sec )
+	local tt = new_timetable(year, month, day, hour, min, sec)
 
 	local tz_offset
-	if str:match ("^[Zz]" , patt_end ) then
+	if str:match("^[Zz]", patt_end) then
 		tz_offset = 0
 	else
-		local hour_offset , min_offset = str:match ( "^([+-]%d%d):(%d%d)" , patt_end )
+		local hour_offset, min_offset = str:match("^([+-]%d%d):(%d%d)", patt_end)
 		if hour_offset then
-			tz_offset = tonumber ( hour_offset ) * 3600 + tonumber ( min_offset ) * 60
+			tz_offset = tonumber(hour_offset) * 3600 + tonumber(min_offset) * 60
 		else -- luacheck: ignore 542
 			-- Invalid RFC 3339 timestamp offset (should be Z or (+/-)hour:min)
 			-- tz_offset will be nil
 		end
 	end
 
-	return tt , tz_offset
+	return tt, tz_offset
 end
 
 return {
-	rfc_3339 = rfc_3339 ;
+	rfc_3339 = rfc_3339;
 }
diff --git a/luatz/strftime.lua b/luatz/strftime.lua
index a65a706..223da0f 100644
--- a/luatz/strftime.lua
+++ b/luatz/strftime.lua
@@ -1,21 +1,21 @@
 local strformat = string.format
 local floor = math.floor
-local function idiv ( n , d )
-	return floor ( n / d )
+local function idiv(n, d)
+	return floor(n / d)
 end
 
 local c_locale = {
-	abday = { "Sun" , "Mon" , "Tue" , "Wed" , "Thu" , "Fri" , "Sat" } ;
-	day = { "Sunday" , "Monday" , "Tuesday" , "Wednesday" , "Thursday" , "Friday" , "Saturday" } ;
-	abmon = { "Jan" , "Feb" , "Mar" , "Apr" , "May" , "Jun" , "Jul" , "Aug" , "Sep" , "Oct" , "Nov" , "Dec" } ;
-	mon = { "January" , "February" , "March" , "April" , "May" , "June" ,
-		"July" , "August" , "September" , "October" , "November" , "December" } ;
-	am_pm = { "AM" , "PM" } ;
+	abday = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
+	day = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
+	abmon = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+	mon = {"January", "February", "March", "April", "May", "June",
+		"July", "August", "September", "October", "November", "December"};
+	am_pm = {"AM", "PM"};
 }
 
 --- ISO-8601 week logic
 -- ISO 8601 weekday as number with Monday as 1 (1-7)
-local function iso_8601_weekday ( wday )
+local function iso_8601_weekday(wday)
 	if wday == 1 then
 		return 7
 	else
@@ -24,7 +24,7 @@ local function iso_8601_weekday ( wday )
 end
 local iso_8601_week do
 	-- Years that have 53 weeks according to ISO-8601
-	local long_years = { }
+	local long_years = {}
 	for _, v in ipairs {
 		  4,   9,  15,  20,  26,  32,  37,  43,  48,  54,  60,  65,  71,  76,  82,
 		 88,  93,  99, 105, 111, 116, 122, 128, 133, 139, 144, 150, 156, 161, 167,
@@ -32,179 +32,179 @@ local iso_8601_week do
 		257, 263, 268, 274, 280, 285, 291, 296, 303, 308, 314, 320, 325, 331, 336,
 		342, 348, 353, 359, 364, 370, 376, 381, 387, 392, 398
 	} do
-		long_years [ v ] = true
+		long_years[v] = true
 	end
-	local function is_long_year ( year )
-		return long_years [ year % 400 ]
+	local function is_long_year(year)
+		return long_years[year % 400]
 	end
-	function iso_8601_week ( self )
-		local wday = iso_8601_weekday ( self.wday )
+	function iso_8601_week(self)
+		local wday = iso_8601_weekday(self.wday)
 		local n = self.yday - wday
 		local year = self.year
 		if n < -3 then
 			year = year - 1
-			if is_long_year ( year ) then
-				return year , 53 , wday
+			if is_long_year(year) then
+				return year, 53, wday
 			else
-				return year , 52 , wday
+				return year, 52, wday
 			end
-		elseif n >= 361 and not is_long_year ( year ) then
-			return year + 1 , 1 , wday
+		elseif n >= 361 and not is_long_year(year) then
+			return year + 1, 1, wday
 		else
-			return year , idiv ( n + 10 , 7 ) , wday
+			return year, idiv(n + 10, 7), wday
 		end
 	end
 end
 
 --- Specifiers
-local t = { }
-function t:a ( locale )
-	return "%s" , locale.abday [ self.wday ]
+local t = {}
+function t:a(locale)
+	return "%s", locale.abday[self.wday]
 end
-function t:A ( locale )
-	return "%s" , locale.day [ self.wday ]
+function t:A(locale)
+	return "%s", locale.day[self.wday]
 end
-function t:b ( locale )
-	return "%s" , locale.abmon [ self.month ]
+function t:b(locale)
+	return "%s", locale.abmon[self.month]
 end
-function t:B ( locale )
-	return "%s" , locale.mon [ self.month ]
+function t:B(locale)
+	return "%s", locale.mon[self.month]
 end
-function t:c ( locale )
-	return "%.3s %.3s%3d %.2d:%.2d:%.2d %d" ,
-		locale.abday [ self.wday ] , locale.abmon [ self.month ] ,
-		self.day , self.hour , self.min , self.sec , self.year
+function t:c(locale)
+	return "%.3s %.3s%3d %.2d:%.2d:%.2d %d",
+		locale.abday[self.wday], locale.abmon[self.month],
+		self.day, self.hour, self.min, self.sec, self.year
 end
 -- Century
-function t:C ( )
-	return "%02d" , idiv ( self.year , 100 )
+function t:C()
+	return "%02d", idiv(self.year, 100)
 end
-function t:d ( )
-	return "%02d" , self.day
+function t:d()
+	return "%02d", self.day
 end
 -- Short MM/DD/YY date, equivalent to %m/%d/%y
-function t:D ( )
-	return "%02d/%02d/%02d" , self.month , self.day , self.year % 100
+function t:D()
+	return "%02d/%02d/%02d", self.month, self.day, self.year % 100
 end
-function t:e ( )
-	return "%2d" , self.day
+function t:e()
+	return "%2d", self.day
 end
 -- Short YYYY-MM-DD date, equivalent to %Y-%m-%d
-function t:F ( )
-	return "%d-%02d-%02d" , self.year , self.month , self.day
+function t:F()
+	return "%d-%02d-%02d", self.year, self.month, self.day
 end
 -- Week-based year, last two digits (00-99)
-function t:g ( )
-	return "%02d" , iso_8601_week ( self ) % 100
+function t:g()
+	return "%02d", iso_8601_week(self) % 100
 end
 -- Week-based year
-function t:G ( )
-	return "%d" , iso_8601_week ( self )
+function t:G()
+	return "%d", iso_8601_week(self)
 end
 t.h = t.b
-function t:H ( )
-	return "%02d" , self.hour
+function t:H()
+	return "%02d", self.hour
 end
-function t:I ( )
-	return "%02d" , (self.hour-1) % 12 + 1
+function t:I()
+	return "%02d", (self.hour-1) % 12 + 1
 end
-function t:j ( )
-	return "%03d" , self.yday
+function t:j()
+	return "%03d", self.yday
 end
-function t:m ( )
-	return "%02d" , self.month
+function t:m()
+	return "%02d", self.month
 end
-function t:M ( )
-	return "%02d" , self.min
+function t:M()
+	return "%02d", self.min
 end
 -- New-line character ('\n')
-function t:n ( ) -- luacheck: ignore 212
+function t:n() -- luacheck: ignore 212
 	return "\n"
 end
-function t:p ( locale )
+function t:p(locale)
 	return self.hour < 12 and locale.am_pm[1] or locale.am_pm[2]
 end
 -- TODO: should respect locale
-function t:r ( locale )
-	return "%02d:%02d:%02d %s" ,
-		(self.hour-1) % 12 + 1 , self.min , self.sec ,
+function t:r(locale)
+	return "%02d:%02d:%02d %s",
+		(self.hour-1) % 12 + 1, self.min, self.sec,
 		self.hour < 12 and locale.am_pm[1] or locale.am_pm[2]
 end
 -- 24-hour HH:MM time, equivalent to %H:%M
-function t:R ( )
-	return "%02d:%02d" , self.hour , self.min
+function t:R()
+	return "%02d:%02d", self.hour, self.min
 end
-function t:s ( )
-	return "%d" , self:timestamp ( )
+function t:s()
+	return "%d", self:timestamp()
 end
-function t:S ( )
-	return "%02d" , self.sec
+function t:S()
+	return "%02d", self.sec
 end
 -- Horizontal-tab character ('\t')
-function t:t ( ) -- luacheck: ignore 212
+function t:t() -- luacheck: ignore 212
 	return "\t"
 end
 -- ISO 8601 time format (HH:MM:SS), equivalent to %H:%M:%S
-function t:T ( )
-	return "%02d:%02d:%02d" , self.hour , self.min , self.sec
+function t:T()
+	return "%02d:%02d:%02d", self.hour, self.min, self.sec
 end
-function t:u ( )
-	return "%d" , iso_8601_weekday ( self.wday )
+function t:u()
+	return "%d", iso_8601_weekday(self.wday)
 end
 -- Week number with the first Sunday as the first day of week one (00-53)
-function t:U ( )
-	return "%02d" , idiv ( self.yday - self.wday + 7 , 7 )
+function t:U()
+	return "%02d", idiv(self.yday - self.wday + 7, 7)
 end
 -- ISO 8601 week number (00-53)
-function t:V ( )
-	return "%02d" , select ( 2 , iso_8601_week ( self ) )
+function t:V()
+	return "%02d", select(2, iso_8601_week(self))
 end
 -- Weekday as a decimal number with Sunday as 0 (0-6)
-function t:w ( )
-	return "%d" , self.wday - 1
+function t:w()
+	return "%d", self.wday - 1
 end
 -- Week number with the first Monday as the first day of week one (00-53)
-function t:W ( )
-	return "%02d" , idiv ( self.yday - iso_8601_weekday ( self.wday ) + 7 , 7 )
+function t:W()
+	return "%02d", idiv(self.yday - iso_8601_weekday(self.wday) + 7, 7)
 end
 -- TODO make t.x and t.X respect locale
 t.x = t.D
 t.X = t.T
-function t:y ( )
-	return "%02d" , self.year % 100
+function t:y()
+	return "%02d", self.year % 100
 end
-function t:Y ( )
-	return "%d" , self.year
+function t:Y()
+	return "%d", self.year
 end
 -- TODO timezones
-function t:z ( ) -- luacheck: ignore 212
+function t:z() -- luacheck: ignore 212
 	return "+0000"
 end
-function t:Z ( ) -- luacheck: ignore 212
+function t:Z() -- luacheck: ignore 212
 	return "GMT"
 end
 -- A literal '%' character.
-t["%"] = function ( self ) -- luacheck: ignore 212
+t["%"] = function(self) -- luacheck: ignore 212
 	return "%%"
 end
 
-local function strftime ( format_string , timetable )
-	return ( string.gsub ( format_string , "%%([EO]?)(.)" , function ( locale_modifier , specifier )
-		local func = t [ specifier ]
+local function strftime(format_string, timetable)
+	return (string.gsub(format_string, "%%([EO]?)(.)", function(locale_modifier, specifier)
+		local func = t[specifier]
 		if func then
-			return strformat ( func ( timetable , c_locale ) )
+			return strformat(func(timetable, c_locale))
 		else
-			error ( "invalid conversation specifier '%"..locale_modifier..specifier.."'" , 3 )
+			error("invalid conversation specifier '%"..locale_modifier..specifier.."'", 3)
 		end
-	end ) )
+	end))
 end
 
-local function asctime ( timetable )
+local function asctime(timetable)
 	-- Equivalent to the format string "%c\n"
-	return strformat ( t.c ( timetable , c_locale ) ) .. "\n"
+	return strformat(t.c(timetable, c_locale)) .. "\n"
 end
 
 return {
-	strftime = strftime ;
-	asctime = asctime ;
+	strftime = strftime;
+	asctime = asctime;
 }
diff --git a/luatz/timetable.lua b/luatz/timetable.lua
index 812d497..1a304e2 100644
--- a/luatz/timetable.lua
+++ b/luatz/timetable.lua
@@ -14,16 +14,16 @@ local idiv do
 end
 
 
-local mon_lengths = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+local mon_lengths = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
 -- Number of days in year until start of month; not corrected for leap years
-local months_to_days_cumulative = { 0 }
+local months_to_days_cumulative = {0}
 for i = 2, 12 do
-	months_to_days_cumulative [ i ] = months_to_days_cumulative [ i-1 ] + mon_lengths [ i-1 ]
+	months_to_days_cumulative[i] = months_to_days_cumulative[i-1] + mon_lengths[i-1]
 end
 -- For Sakamoto's Algorithm (day of week)
 local sakamoto = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4};
 
-local function is_leap ( y )
+local function is_leap(y)
 	if (y % 4) ~= 0 then
 		return false
 	elseif (y % 100) ~= 0 then
@@ -33,72 +33,72 @@ local function is_leap ( y )
 	end
 end
 
-local function month_length ( m , y )
+local function month_length(m, y)
 	if m == 2 then
-		return is_leap ( y ) and 29 or 28
+		return is_leap(y) and 29 or 28
 	else
-		return mon_lengths [ m ]
+		return mon_lengths[m]
 	end
 end
 
-local function leap_years_since ( year )
-	return idiv ( year , 4 ) - idiv ( year , 100 ) + idiv ( year , 400 )
+local function leap_years_since(year)
+	return idiv(year, 4) - idiv(year, 100) + idiv(year, 400)
 end
 
-local function day_of_year ( day , month , year )
-	local yday = months_to_days_cumulative [ month ]
-	if month > 2 and is_leap ( year ) then
+local function day_of_year(day, month, year)
+	local yday = months_to_days_cumulative[month]
+	if month > 2 and is_leap(year) then
 		yday = yday + 1
 	end
 	return yday + day
 end
 
-local function day_of_week ( day , month , year )
+local function day_of_week(day, month, year)
 	if month < 3 then
 		year = year - 1
 	end
-	return ( year + leap_years_since ( year ) + sakamoto[month] + day ) % 7 + 1
+	return(year + leap_years_since(year) + sakamoto[month] + day) % 7 + 1
 end
 
-local function borrow ( tens , units , base )
+local function borrow(tens, units, base)
 	local frac = tens % 1
 	units = units + frac * base
 	tens = tens - frac
-	return tens , units
+	return tens, units
 end
 
-local function carry ( tens , units , base )
+local function carry(tens, units, base)
 	if units >= base then
-		tens  = tens + idiv ( units , base )
+		tens  = tens + idiv(units, base)
 		units = units % base
 	elseif units < 0 then
-		tens  = tens + idiv ( units , base )
-		units = ( base + units ) % base
+		tens  = tens + idiv(units, base)
+		units = (base + units) % base
 	end
-	return tens , units
+	return tens, units
 end
 
 -- Modify parameters so they all fit within the "normal" range
-local function normalise ( year , month , day , hour , min , sec )
+local function normalise(year, month, day, hour, min, sec)
 	-- `month` and `day` start from 1, need -1 and +1 so it works modulo
-	month , day = month - 1 , day - 1
+	month, day = month - 1, day - 1
 
 	-- Convert everything (except seconds) to an integer
 	-- by propagating fractional components down.
-	year  , month = borrow ( year  , month , 12 )
+	year , month = borrow(year , month, 12)
 	-- Carry from month to year first, so we get month length correct in next line around leap years
-	year  , month = carry ( year , month , 12 )
-	month , day   = borrow ( month , day   , month_length ( floor ( month + 1 ) , year ) )
-	day   , hour  = borrow ( day   , hour  , 24 )
-	hour  , min   = borrow ( hour  , min   , 60 )
-	min   , sec   = borrow ( min   , sec   , 60 )
+	year , month = carry(year, month, 12)
+	month, day   = borrow(month, day  , month_length(floor(month + 1), year))
+	day  , hour  = borrow(day  , hour , 24)
+	hour , min   = borrow(hour , min  , 60)
+	min  , sec   = borrow(min  , sec  , 60)
 
 	-- Propagate out of range values up
 	-- e.g. if `min` is 70, `hour` increments by 1 and `min` becomes 10
 	-- This has to happen for all columns after borrowing, as lower radixes may be pushed out of range
-	min   , sec   = carry ( min   , sec   , 60 ) -- TODO: consider leap seconds?
-	hour  , min   = carry ( hour  , min   , 60 )
-	day   , hour  = carry ( day   , hour  , 24 )
+	min  , sec   = carry(min , sec , 60) -- TODO: consider leap seconds?
+	hour , min   = carry(hour, min , 60)
+	day  , hour  = carry(day , hour, 24)
 	-- Ensure `day` is not underflowed
 	-- Add a whole year of days at a time, this is later resolved by adding months
 	-- TODO[OPTIMIZE]: This could be slow if `day` is far out of range
@@ -108,13 +108,13 @@ local function normalise ( year , month , day , hour , min , sec )
 			year = year - 1
 			month = 11
 		end
-		day = day + month_length ( month + 1 , year )
+		day = day + month_length(month + 1, year)
 	end
-	year , month = carry ( year , month , 12 )
+	year, month = carry(year, month, 12)
 
 	-- TODO[OPTIMIZE]: This could potentially be slow if `day` is very large
 	while true do
-		local i = month_length ( month + 1 , year )
+		local i = month_length(month + 1, year)
 		if day < i then break end
 		day = day - i
 		month = month + 1
@@ -126,129 +126,129 @@ local function normalise ( year , month , day , hour , min , sec )
 
 	-- Now we can place `day` and `month` back in their normal ranges
 	-- e.g. month as 1-12 instead of 0-11
-	month , day = month + 1 , day + 1
+	month, day = month + 1, day + 1
 
-	return year , month , day , hour , min , sec
+	return year, month, day, hour, min, sec
 end
 
-local leap_years_since_1970 = leap_years_since ( 1970 )
-local function timestamp ( year , month , day , hour , min , sec )
-	year , month , day , hour , min , sec = normalise ( year , month , day , hour , min , sec )
+local leap_years_since_1970 = leap_years_since(1970)
+local function timestamp(year, month, day, hour, min, sec)
+	year, month, day, hour, min, sec = normalise(year, month, day, hour, min, sec)
 
-	local days_since_epoch = day_of_year ( day , month , year )
-		+ 365 * ( year - 1970 )
+	local days_since_epoch = day_of_year(day, month, year)
+		+ 365 * (year - 1970)
 		-- Each leap year adds one day
-		+ ( leap_years_since ( year - 1 ) - leap_years_since_1970 ) - 1
+		+ (leap_years_since(year - 1) - leap_years_since_1970) - 1
 
 	return days_since_epoch * (60*60*24)
-		+ hour  * (60*60)
-		+ min   * 60
+		+ hour * (60*60)
+		+ min  * 60
 		+ sec
 end
 
 
-local timetable_methods = { }
+local timetable_methods = {}
 
-function timetable_methods:unpack ( )
-	return assert ( self.year  , "year required" ) ,
-		assert ( self.month , "month required" ) ,
-		assert ( self.day   , "day required" ) ,
-		self.hour or 12 ,
-		self.min  or 0 ,
-		self.sec  or 0 ,
-		self.yday ,
+function timetable_methods:unpack()
+	return assert(self.year , "year required"),
+		assert(self.month, "month required"),
+		assert(self.day  , "day required"),
+		self.hour or 12,
+		self.min  or 0,
+		self.sec  or 0,
+		self.yday,
 		self.wday
 end
 
-function timetable_methods:normalise ( )
-	local year , month , day
-	year , month , day , self.hour , self.min , self.sec = normalise ( self:unpack ( ) )
+function timetable_methods:normalise()
+	local year, month, day
+	year, month, day, self.hour, self.min, self.sec = normalise(self:unpack())
 
 	self.day   = day
 	self.month = month
 	self.year  = year
-	self.yday  = day_of_year ( day , month , year )
-	self.wday  = day_of_week ( day , month , year )
+	self.yday  = day_of_year(day, month, year)
+	self.wday  = day_of_week(day, month, year)
 
 	return self
 end
 timetable_methods.normalize = timetable_methods.normalise -- American English
 
-function timetable_methods:timestamp ( )
-	return timestamp ( self:unpack ( ) )
+function timetable_methods:timestamp()
+	return timestamp(self:unpack())
 end
 
-function timetable_methods:rfc_3339 ( )
+function timetable_methods:rfc_3339()
 	local year, month, day, hour, min, fsec = self:unpack()
 	local sec, msec = borrow(fsec, 0, 1000)
 	msec = math.floor(msec)
-	return strformat ( "%04u-%02u-%02uT%02u:%02u:%02d.%03d" , year , month , day , hour , min , sec , msec )
+	return strformat("%04u-%02u-%02uT%02u:%02u:%02d.%03d", year, month, day, hour, min, sec, msec)
 end
 
-function timetable_methods:strftime ( format_string )
-	return strftime ( format_string , self )
+function timetable_methods:strftime(format_string)
+	return strftime(format_string, self)
 end
 
 local timetable_mt
 
-local function coerce_arg ( t )
-	if getmetatable ( t ) == timetable_mt then
-		return t:timestamp ( )
+local function coerce_arg(t)
+	if getmetatable(t) == timetable_mt then
+		return t:timestamp()
 	end
 	return t
 end
 
 timetable_mt = {
-	__index    = timetable_methods ;
-	__tostring = timetable_methods.rfc_3339 ;
-	__eq = function ( a , b )
-		return a:timestamp ( ) == b:timestamp ( )
-	end ;
-	__lt = function ( a , b )
-		return a:timestamp ( ) < b:timestamp ( )
-	end ;
-	__sub = function ( a , b )
-		return coerce_arg ( a ) - coerce_arg ( b )
-	end ;
+	__index    = timetable_methods;
+	__tostring = timetable_methods.rfc_3339;
+	__eq = function(a, b)
+		return a:timestamp() == b:timestamp()
+	end;
+	__lt = function(a, b)
+		return a:timestamp() < b:timestamp()
+	end;
+	__sub = function(a, b)
+		return coerce_arg(a) - coerce_arg(b)
+	end;
 }
 
-local function cast_timetable ( tm )
-	return setmetatable ( tm , timetable_mt )
+local function cast_timetable(tm)
+	return setmetatable(tm, timetable_mt)
 end
 
-local function new_timetable ( year , month , day , hour , min , sec , yday , wday )
+local function new_timetable(year, month, day, hour, min, sec, yday, wday)
 	return cast_timetable {
-		year  = year ;
-		month = month ;
-		day   = day ;
-		hour  = hour ;
-		min   = min ;
-		sec   = sec ;
-		yday  = yday ;
-		wday  = wday ;
+		year  = year;
+		month = month;
+		day   = day;
+		hour  = hour;
+		min   = min;
+		sec   = sec;
+		yday  = yday;
+		wday  = wday;
 	}
 end
 
-function timetable_methods:clone ( )
-	return new_timetable ( self:unpack ( ) )
+function timetable_methods:clone()
+	return new_timetable(self:unpack())
 end
 
-local function new_from_timestamp ( ts )
-	if type ( ts ) ~= "number" then
-		error ( "bad argument #1 to 'new_from_timestamp' (number expected, got " .. type ( ts ) .. ")" , 2 )
+local function new_from_timestamp(ts)
+	if type(ts) ~= "number" then
+		error("bad argument #1 to 'new_from_timestamp' (number expected, got " .. type(ts) .. ")", 2)
 	end
-	return new_timetable ( 1970 , 1 , 1 , 0 , 0 , ts ):normalise ( )
+	return new_timetable(1970, 1, 1, 0, 0, ts):normalise()
 end
 
 return {
-	is_leap = is_leap ;
-	day_of_year = day_of_year ;
-	day_of_week = day_of_week ;
-	normalise = normalise ;
-	timestamp = timestamp ;
-
-	new = new_timetable ;
-	new_from_timestamp = new_from_timestamp ;
-	cast = cast_timetable ;
-	timetable_mt = timetable_mt ;
+	is_leap = is_leap;
+	day_of_year = day_of_year;
+	day_of_week = day_of_week;
+	normalise = normalise;
+	timestamp = timestamp;
+
+	new = new_timetable;
+	new_from_timestamp = new_from_timestamp;
+	cast = cast_timetable;
+	timetable_mt = timetable_mt;
 }
diff --git a/luatz/tzcache.lua b/luatz/tzcache.lua
index 98ced26..ae32dce 100644
--- a/luatz/tzcache.lua
+++ b/luatz/tzcache.lua
@@ -2,34 +2,34 @@ local read_tzfile = require "luatz.tzfile".read_tzfile
 
 local base_zoneinfo_path = "/usr/share/zoneinfo/"
 local local_zoneinfo_path = "/etc/localtime"
-local tz_cache = { }
+local tz_cache = {}
 
-local function name_to_zoneinfo_path ( name )
+local function name_to_zoneinfo_path(name)
 	if name == nil then
 		return local_zoneinfo_path
-	elseif name:sub ( 1 , 1 ) == "/" then
+	elseif name:sub(1, 1) == "/" then
 		return name
 	else
 		return base_zoneinfo_path .. name
 	end
 end
 
-local function clear_tz_cache ( name )
-	tz_cache [ name_to_zoneinfo_path ( name ) ] = nil
+local function clear_tz_cache(name)
+	tz_cache[name_to_zoneinfo_path(name)] = nil
 end
 
-local function get_tz ( name )
-	local path = name_to_zoneinfo_path ( name )
+local function get_tz(name)
+	local path = name_to_zoneinfo_path(name)
 	-- TODO: stat path
-	local tzinfo = tz_cache [ path ]
+	local tzinfo = tz_cache[path]
 	if tzinfo == nil then
-		tzinfo = read_tzfile ( path )
-		tz_cache [ path ] = tzinfo
+		tzinfo = read_tzfile(path)
+		tz_cache[path] = tzinfo
 	end
 	return tzinfo
 end
 
 return {
-	get_tz = get_tz ;
-	clear_tz_cache = clear_tz_cache ;
+	get_tz = get_tz;
+	clear_tz_cache = clear_tz_cache;
 }
diff --git a/luatz/tzfile.lua b/luatz/tzfile.lua
index 2d64d36..e57db6d 100644
--- a/luatz/tzfile.lua
+++ b/luatz/tzfile.lua
@@ -45,11 +45,11 @@ else -- luacheck: pop
 	end
 end
 
-local function read_flags ( fd , n )
-	local data , err = fd:read ( n )
-	if data == nil then return nil , err end
+local function read_flags(fd, n)
+	local data, err = fd:read(n)
+	if data == nil then return nil, err end
 
-	local res = { }
+	local res = {}
 	for i=1, n do
 		res[i] = data:byte(i,i) ~= 0
 	end
@@ -57,60 +57,60 @@ local function read_flags ( fd , n )
 end
 
 local fifteen_nulls = ("\0"):rep(15)
-local function read_tz ( fd )
-	assert ( fd:read(4) == "TZif" , "Invalid TZ file" )
-	local version = assert ( fd:read(1) )
+local function read_tz(fd)
+	assert(fd:read(4) == "TZif", "Invalid TZ file")
+	local version = assert(fd:read(1))
 	if version == "\0" or version == "2" or version == "3" then
 		local MIN_TIME = -2^32+1
 
-		assert ( assert ( fd:read(15) ) == fifteen_nulls , "Expected 15 nulls" )
+		assert(assert(fd:read(15)) == fifteen_nulls, "Expected 15 nulls")
 
 		-- The number of UTC/local indicators stored in the file.
-		local tzh_ttisgmtcnt = assert ( read_int32be ( fd ) )
+		local tzh_ttisgmtcnt = assert(read_int32be(fd))
 
 		-- The number of standard/wall indicators stored in the file.
-		local tzh_ttisstdcnt = assert ( read_int32be ( fd ) )
+		local tzh_ttisstdcnt = assert(read_int32be(fd))
 
 		-- The number of leap seconds for which data is stored in the file.
-		local tzh_leapcnt = assert ( read_int32be ( fd ) )
+		local tzh_leapcnt = assert(read_int32be(fd))
 
 		-- The number of "transition times" for which data is stored in the file.
-		local tzh_timecnt = assert ( read_int32be ( fd ) )
+		local tzh_timecnt = assert(read_int32be(fd))
 
 		-- The number of "local time types" for which data is stored in the file (must not be zero).
-		local tzh_typecnt = assert ( read_int32be ( fd ) )
+		local tzh_typecnt = assert(read_int32be(fd))
 
 		-- The number of characters of "timezone abbreviation strings" stored in the file.
-		local tzh_charcnt = assert ( read_int32be ( fd ) )
+		local tzh_charcnt = assert(read_int32be(fd))
 
-		local transition_times = { }
+		local transition_times = {}
 		for i=1, tzh_timecnt do
-			transition_times [ i ] = assert ( read_int32be ( fd ) )
+			transition_times[i] = assert(read_int32be(fd))
 		end
-		local transition_time_ind = { assert ( fd:read ( tzh_timecnt ) ):byte ( 1 , -1 ) }
+		local transition_time_ind = {assert(fd:read(tzh_timecnt)):byte(1, -1)}
 
-		local ttinfos = { }
+		local ttinfos = {}
 		for i=1, tzh_typecnt do
-			ttinfos [ i ] = {
-				gmtoff = assert ( read_int32be ( fd ) ) ;
-				isdst  = assert ( fd:read ( 1 ) ) ~= "\0" ;
-				abbrind = assert ( fd:read ( 1 ) ):byte ( ) ;
+			ttinfos[i] = {
+				gmtoff = assert(read_int32be(fd));
+				isdst  = assert(fd:read(1)) ~= "\0";
+				abbrind = assert(fd:read(1)):byte();
 			}
 		end
 
-		local abbreviations = assert ( fd:read ( tzh_charcnt ) )
+		local abbreviations = assert(fd:read(tzh_charcnt))
 
-		local leap_seconds = { } -- luacheck: ignore 241
+		local leap_seconds = {} -- luacheck: ignore 241
 		for i=1, tzh_leapcnt do
-			leap_seconds [ i ] = {
-				offset = assert ( read_int32be ( fd ) ) ;
-				n = assert ( read_int32be ( fd ) ) ;
+			leap_seconds[i] = {
+				offset = assert(read_int32be(fd));
+				n = assert(read_int32be(fd));
 			}
 		end
 
-		local isstd = assert ( read_flags ( fd , tzh_ttisstdcnt ) )
+		local isstd = assert(read_flags(fd, tzh_ttisstdcnt))
 
-		local isgmt = assert ( read_flags ( fd , tzh_ttisgmtcnt ) )
+		local isgmt = assert(read_flags(fd, tzh_ttisgmtcnt))
 
 		local TZ
 
@@ -121,56 +121,56 @@ local function read_tz ( fd )
 			]]
 			assert(fd:read(4) == "TZif")
 			assert(fd:read(1) == version)
-			assert ( assert ( fd:read(15) ) == fifteen_nulls , "Expected 15 nulls" )
+			assert(assert(fd:read(15)) == fifteen_nulls, "Expected 15 nulls")
 
 			MIN_TIME = -2^64+1
 
 			-- The number of UTC/local indicators stored in the file.
-			tzh_ttisgmtcnt = assert ( read_int32be ( fd ) )
+			tzh_ttisgmtcnt = assert(read_int32be(fd))
 
 			-- The number of standard/wall indicators stored in the file.
-			tzh_ttisstdcnt = assert ( read_int32be ( fd ) )
+			tzh_ttisstdcnt = assert(read_int32be(fd))
 
 			-- The number of leap seconds for which data is stored in the file.
-			tzh_leapcnt = assert ( read_int32be ( fd ) )
+			tzh_leapcnt = assert(read_int32be(fd))
 
 			-- The number of "transition times" for which data is stored in the file.
-			tzh_timecnt = assert ( read_int32be ( fd ) )
+			tzh_timecnt = assert(read_int32be(fd))
 
 			-- The number of "local time types" for which data is stored in the file (must not be zero).
-			tzh_typecnt = assert ( read_int32be ( fd ) )
+			tzh_typecnt = assert(read_int32be(fd))
 
 			-- The number of characters of "timezone abbreviation strings" stored in the file.
-			tzh_charcnt = assert ( read_int32be ( fd ) )
+			tzh_charcnt = assert(read_int32be(fd))
 
-			transition_times = { }
+			transition_times = {}
 			for i=1, tzh_timecnt do
-				transition_times [ i ] = assert ( read_int64be ( fd ) )
+				transition_times[i] = assert(read_int64be(fd))
 			end
-			transition_time_ind = { assert ( fd:read ( tzh_timecnt ) ):byte ( 1 , -1 ) }
+			transition_time_ind = {assert(fd:read(tzh_timecnt)):byte(1, -1)}
 
-			ttinfos = { }
+			ttinfos = {}
 			for i=1, tzh_typecnt do
-				ttinfos [ i ] = {
-					gmtoff = assert ( read_int32be ( fd ) ) ;
-					isdst  = assert ( fd:read ( 1 ) ) ~= "\0" ;
-					abbrind = assert ( fd:read ( 1 ) ):byte ( ) ;
+				ttinfos[i] = {
+					gmtoff = assert(read_int32be(fd));
+					isdst  = assert(fd:read(1)) ~= "\0";
+					abbrind = assert(fd:read(1)):byte();
 				}
 			end
 
-			abbreviations = assert ( fd:read ( tzh_charcnt ) )
+			abbreviations = assert(fd:read(tzh_charcnt))
 
-			leap_seconds = { }
+			leap_seconds = {}
 			for i=1, tzh_leapcnt do
-				leap_seconds [ i ] = {
-					offset = assert ( read_int64be ( fd ) ) ;
-					n = assert ( read_int32be ( fd ) ) ;
+				leap_seconds[i] = {
+					offset = assert(read_int64be(fd));
+					n = assert(read_int32be(fd));
 				}
 			end
 
-			isstd = assert ( read_flags ( fd , tzh_ttisstdcnt ) )
+			isstd = assert(read_flags(fd, tzh_ttisstdcnt))
 
-			isgmt = assert ( read_flags ( fd , tzh_ttisgmtcnt ) )
+			isgmt = assert(read_flags(fd, tzh_ttisgmtcnt))
 
 			--[[
 			After the second header and data comes a newline-enclosed, POSIX-TZ-environment-variable-style string
@@ -188,20 +188,20 @@ local function read_tz ( fd )
 			between daylight saving and standard time.
 			]]
 
-			assert ( assert ( fd:read ( 1 ) ) == "\n" , "Expected newline at end of version 2 header" )
+			assert(assert(fd:read(1)) == "\n", "Expected newline at end of version 2 header")
 
-			TZ = assert ( fd:read ( "*l" ) )
+			TZ = assert(fd:read("*l"))
 			if #TZ == 0 then
 				TZ = nil
 			end
 		end
 
 		for i=1, tzh_typecnt do
-			local v = ttinfos [ i ]
-			v.abbr = abbreviations:sub ( v.abbrind+1 , v.abbrind+3 )
-			v.isstd = isstd [ i ] or false
-			v.isgmt = isgmt [ i ] or false
-			setmetatable ( v , tt_info_mt )
+			local v = ttinfos[i]
+			v.abbr = abbreviations:sub(v.abbrind+1, v.abbrind+3)
+			v.isstd = isstd[i] or false
+			v.isgmt = isgmt[i] or false
+			setmetatable(v, tt_info_mt)
 		end
 
 		--[[
@@ -222,30 +222,30 @@ local function read_tz ( fd )
 		local res = {
 			future = TZ;
 			[0] = {
-				transition_time = MIN_TIME ;
-				info = ttinfos [ first ] ;
+				transition_time = MIN_TIME;
+				info = ttinfos[first];
 			}
 		}
 		for i=1, tzh_timecnt do
-			res [ i ] = {
-				transition_time = transition_times [ i ] ;
-				info = ttinfos [ transition_time_ind [ i ]+1 ] ;
+			res[i] = {
+				transition_time = transition_times[i];
+				info = ttinfos[transition_time_ind[i]+1];
 			}
 		end
-		return setmetatable ( res , tz_info_mt )
+		return setmetatable(res, tz_info_mt)
 	else
-		error ( "Unsupported version" )
+		error("Unsupported version")
 	end
 end
 
-local function read_tzfile ( path )
-	local fd = assert ( io.open ( path , "rb" ) )
-	local tzinfo = read_tz ( fd )
-	fd:close ( )
+local function read_tzfile(path)
+	local fd = assert(io.open(path, "rb"))
+	local tzinfo = read_tz(fd)
+	fd:close()
 	return tzinfo
 end
 
 return {
-	read_tz = read_tz ;
-	read_tzfile = read_tzfile ;
+	read_tz = read_tz;
+	read_tzfile = read_tzfile;
 }
diff --git a/luatz/tzinfo.lua b/luatz/tzinfo.lua
index 3ff0a07..e37483f 100644
--- a/luatz/tzinfo.lua
+++ b/luatz/tzinfo.lua
@@ -1,51 +1,51 @@
 local gettime = require "luatz.gettime".gettime
 local timetable_mt = require "luatz.timetable".timetable_mt
 
-local function to_timestamp ( o )
-	if type ( o ) == "number" then
+local function to_timestamp(o)
+	if type(o) == "number" then
 		return o
-	elseif getmetatable ( o ) == timetable_mt then
-		return o:timestamp ( )
+	elseif getmetatable(o) == timetable_mt then
+		return o:timestamp()
 	end
 end
 
 local tz_info_methods = { }
 local tz_info_mt = {
 	__name = "luatz.tz_info";
-	__index = tz_info_methods ;
+	__index = tz_info_methods;
 }
 local tt_info_mt = {
 	__name = "luatz.tt_info";
-	__tostring = function ( self )
-		return string.format ( "tt_info:%s=%d" , self.abbr , self.gmtoff )
-	end ;
+	__tostring = function(self)
+		return string.format("tt_info:%s=%d", self.abbr, self.gmtoff)
+	end;
 }
 
 -- Binary search
-local function _find_current ( tzinfo , target , i , j )
+local function find_current(tzinfo, target, i, j)
 	if i >= j then return j end
 
-	local half = math.ceil ( (j+i) / 2 )
+	local half = math.ceil((j+i) / 2)
 
-	if target >= tzinfo [ half ].transition_time then
-		return _find_current ( tzinfo , target , half , j )
+	if target >= tzinfo[half].transition_time then
+		return find_current(tzinfo, target, half, j)
 	else
-		return _find_current ( tzinfo , target , i , half-1 )
+		return find_current(tzinfo, target, i, half-1)
 	end
 end
 
-local function find_current_local ( tzinfo , ts_local )
+local function find_current_local(tzinfo, ts_local)
 	-- Find two best possibilities by searching back and forward a day (assumes transition is never by more than 24 hours)
-	local tz_first = _find_current ( tzinfo , ts_local-86400 , 0 , #tzinfo )
-	local tz_last  = _find_current ( tzinfo , ts_local+86400 , 0 , #tzinfo )
+	local tz_first = find_current(tzinfo, ts_local-86400, 0, #tzinfo)
+	local tz_last  = find_current(tzinfo, ts_local+86400, 0, #tzinfo)
 
 	local n_candidates = tz_last - tz_first + 1
 
 	if n_candidates == 1 then
 		return tz_first
 	elseif n_candidates == 2 then
-		local tz_first_ob = tzinfo [ tz_first ]
-		local tz_last_ob  = tzinfo [ tz_last ]
+		local tz_first_ob = tzinfo[tz_first]
+		local tz_last_ob  = tzinfo[tz_last]
 
 		local first_gmtoffset = tz_first_ob.info.gmtoff
 		local last_gmtoffset  = tz_last_ob .info.gmtoff
@@ -61,37 +61,37 @@ local function find_current_local ( tzinfo , ts_local )
 		end
 
 		-- If we get this far, the local time is ambiguous
-		return tz_first , tz_last
+		return tz_first, tz_last
 	else
-		error ( "Too many transitions in a 2 day period" )
+		error("Too many transitions in a 2 day period")
 	end
 end
 
-function tz_info_methods:find_current ( current )
-	current = assert ( to_timestamp ( current ) , "invalid timestamp to :find_current" )
-	return self [ _find_current ( self , current , 0 , #self ) ].info
+function tz_info_methods:find_current(current)
+	current = assert(to_timestamp(current), "invalid timestamp to :find_current")
+	return self[find_current(self, current, 0, #self)].info
 end
 
-function tz_info_methods:localise ( utc_ts )
-	utc_ts = utc_ts or gettime ( )
-	return utc_ts + self:find_current ( utc_ts ).gmtoff
+function tz_info_methods:localise(utc_ts)
+	utc_ts = utc_ts or gettime()
+	return utc_ts + self:find_current(utc_ts).gmtoff
 end
 tz_info_methods.localize = tz_info_methods.localise
 
-function tz_info_methods:utctime ( ts_local )
-	ts_local = assert ( to_timestamp ( ts_local ) , "invalid timestamp to :utctime" )
-	local tz1 , tz2 = find_current_local ( self , ts_local )
-	tz1 = self [ tz1 ].info
+function tz_info_methods:utctime(ts_local)
+	ts_local = assert(to_timestamp(ts_local), "invalid timestamp to :utctime")
+	local tz1, tz2 = find_current_local(self, ts_local)
+	tz1 = self[tz1].info
 	if tz2 == nil then
 		return ts_local - tz1.gmtoff
 	else -- Local time is ambiguous
-		tz2 = self [ tz2 ].info
+		tz2 = self[tz2].info
 
-		return ts_local - tz2.gmtoff , ts_local - tz2.gmtoff
+		return ts_local - tz2.gmtoff, ts_local - tz2.gmtoff
 	end
 end
 
 return {
-	tz_info_mt = tz_info_mt ;
-	tt_info_mt = tt_info_mt ;
+	tz_info_mt = tz_info_mt;
+	tt_info_mt = tt_info_mt;
 }
diff --git a/spec/parse_spec.lua b/spec/parse_spec.lua
index 89c9a26..e38ad38 100644
--- a/spec/parse_spec.lua
+++ b/spec/parse_spec.lua
@@ -1,17 +1,17 @@
-describe ( "Time parsing library" , function ( )
+describe("Time parsing library", function()
 	local timetable = require "luatz.timetable"
 	local parse = require "luatz.parse"
 
-	it ( "#RFC3339 parsing" , function ( )
-		assert.same ( timetable.new(2013,10,22,14,17,02) , (parse.rfc_3339 "2013-10-22T14:17:02Z") )
+	it("#RFC3339 parsing", function()
+		assert.same(timetable.new(2013,10,22,14,17,02), (parse.rfc_3339 "2013-10-22T14:17:02Z"))
 
 		-- Numeric offsets accepted
-		assert.same ( { timetable.new(2013,10,22,14,17,02) , 10*3600 } , { parse.rfc_3339 "2013-10-22T14:17:02+10:00" } )
+		assert.same({timetable.new(2013,10,22,14,17,02), 10*3600 }, {parse.rfc_3339 "2013-10-22T14:17:02+10:00" })
 
 		-- Missing offsets parse
-		assert.same ( timetable.new(2013,10,22,14,17,02) , (parse.rfc_3339 "2013-10-22T14:17:02") )
+		assert.same(timetable.new(2013,10,22,14,17,02), (parse.rfc_3339 "2013-10-22T14:17:02"))
 
 		-- Invalid
 		assert.same(nil, (parse.rfc_3339 "an invalid timestamp"))
-	end )
-end )
+	end)
+end)
diff --git a/spec/timetable_spec.lua b/spec/timetable_spec.lua
index 6c9617e..3713391 100644
--- a/spec/timetable_spec.lua
+++ b/spec/timetable_spec.lua
@@ -1,108 +1,108 @@
-describe ( "Timetable library" , function ( )
+describe("Timetable library", function()
 	local timetable = require "luatz.timetable"
 
-	local function native_normalise ( year , month , day )
-		return os.date("*t",os.time{
-			year = year ;
-			month = month ;
-			day = day ;
+	local function native_normalise(year, month, day)
+		return os.date("*t",os.time {
+			year = year;
+			month = month;
+			day = day;
 		})
 	end
 
-	it ( "#is_leap is correct" , function ( )
-		assert.same ( false , timetable.is_leap ( 1 ) )
-		assert.same ( false , timetable.is_leap ( 3 ) )
-		assert.same ( true  , timetable.is_leap ( 4 ) )
-		assert.same ( true  , timetable.is_leap ( 2000 ) )
-		assert.same ( true  , timetable.is_leap ( 2004 ) )
-		assert.same ( true  , timetable.is_leap ( 2012 ) )
-		assert.same ( false , timetable.is_leap ( 2013 ) )
-		assert.same ( false , timetable.is_leap ( 2014 ) )
-		assert.same ( false , timetable.is_leap ( 2100 ) )
-		assert.same ( true  , timetable.is_leap ( 2400 ) )
-	end )
-
-	it ( "#normalise gets #wday (day of week) correct" , function ( )
-
-		local function assert_same_wday ( year , month , day )
-			return assert.are.same (
-				native_normalise ( year , month , day ).wday ,
-				timetable.new ( year , month , day ):normalise().wday
+	it("#is_leap is correct", function()
+		assert.same(false, timetable.is_leap(1))
+		assert.same(false, timetable.is_leap(3))
+		assert.same(true , timetable.is_leap(4))
+		assert.same(true , timetable.is_leap(2000))
+		assert.same(true , timetable.is_leap(2004))
+		assert.same(true , timetable.is_leap(2012))
+		assert.same(false, timetable.is_leap(2013))
+		assert.same(false, timetable.is_leap(2014))
+		assert.same(false, timetable.is_leap(2100))
+		assert.same(true , timetable.is_leap(2400))
+	end)
+
+	it("#normalise gets #wday (day of week) correct", function()
+
+		local function assert_same_wday(year, month, day)
+			return assert.are.same(
+				native_normalise(year, month, day).wday,
+				timetable.new(year, month, day):normalise().wday
 			)
 		end
 
-		assert_same_wday ( 2013 , 7 , 23 )
-		assert_same_wday ( 2013 , 7 , 24 )
-		assert_same_wday ( 2013 , 7 , 25 )
-		assert_same_wday ( 2013 , 7 , 26 )
-		assert_same_wday ( 2013 , 7 , 27 )
-		assert_same_wday ( 2013 , 7 , 28 )
-		assert_same_wday ( 2013 , 7 , 29 )
-		assert_same_wday ( 2014 , 1 , 1 )
-		assert_same_wday ( 2014 , 1 , 6 )
-		assert_same_wday ( 2016 , 2 , 28 )
-		assert_same_wday ( 2016 , 2 , 29 )
-		assert_same_wday ( 2016 , 3 , 1 )
-	end )
-
-	local function native_timestamp ( year , month , day )
-		return assert ( tonumber ( assert ( io.popen (
-						string.format('date -u -d "%d-%d-%d" +%%s', year , month , day )
-					) ):read "*l" ) )
+		assert_same_wday(2013, 7, 23)
+		assert_same_wday(2013, 7, 24)
+		assert_same_wday(2013, 7, 25)
+		assert_same_wday(2013, 7, 26)
+		assert_same_wday(2013, 7, 27)
+		assert_same_wday(2013, 7, 28)
+		assert_same_wday(2013, 7, 29)
+		assert_same_wday(2014, 1, 1)
+		assert_same_wday(2014, 1, 6)
+		assert_same_wday(2016, 2, 28)
+		assert_same_wday(2016, 2, 29)
+		assert_same_wday(2016, 3, 1)
+	end)
+
+	local function native_timestamp(year, month, day)
+		return assert(tonumber(assert(io.popen(
+						string.format('date -u -d "%d-%d-%d" +%%s', year, month, day)
+					)):read "*l"))
 	end
 
-	it ( "#timestamp creation is valid" , function ( )
+	it("#timestamp creation is valid", function()
 		for y=1950,2013 do
 			for m=1,12 do
-				assert.same ( native_timestamp ( y,m,1 ) , timetable.timestamp(y,m,1,0,0,0) )
+				assert.same(native_timestamp(y,m,1), timetable.timestamp(y,m,1,0,0,0))
 			end
 		end
-	end )
-
-	it ( "#normalise handles out of range days in a year" , function ( )
-		assert.same({ 2014,1,1,0,0,0 }, { timetable.normalise(2013,1,366,0,0,0) })
-		assert.same({ 2014,2,4,0,0,0 }, { timetable.normalise(2013,1,400,0,0,0) })
-		assert.same({ 2017,2,3,0,0,0 }, { timetable.normalise(2016,1,400,0,0,0) })
-		assert.same({ 2016,3,5,0,0,0 }, { timetable.normalise(2015,1,430,0,0,0) })
-		assert.same({ 2017,3,5,0,0,0 }, { timetable.normalise(2016,1,430,0,0,0) })
-		assert.same({ 2027,5,18,0,0,0 }, { timetable.normalise(2000,1,10000,0,0,0) })
-		assert.same({ 29379,1,25,0,0,0 }, { timetable.normalise(2000,1,10000000,0,0,0) })
-	end )
-
-	it ( "#normalise handles out of range days in a #month" , function ( )
-		assert.same({ 2012,12,1,0,0,0 }, { timetable.normalise(2013,0,1,0,0,0) })
-		assert.same({ 2016,6,1,0,0,0 }, { timetable.normalise(2013,42,1,0,0,0) })
+	end)
+
+	it("#normalise handles out of range days in a year", function()
+		assert.same({2014,1,1,0,0,0}, {timetable.normalise(2013,1,366,0,0,0)})
+		assert.same({2014,2,4,0,0,0}, {timetable.normalise(2013,1,400,0,0,0)})
+		assert.same({2017,2,3,0,0,0}, {timetable.normalise(2016,1,400,0,0,0)})
+		assert.same({2016,3,5,0,0,0}, {timetable.normalise(2015,1,430,0,0,0)})
+		assert.same({2017,3,5,0,0,0}, {timetable.normalise(2016,1,430,0,0,0)})
+		assert.same({2027,5,18,0,0,0}, {timetable.normalise(2000,1,10000,0,0,0)})
+		assert.same({29379,1,25,0,0,0}, {timetable.normalise(2000,1,10000000,0,0,0)})
+	end)
+
+	it("#normalise handles out of range days in a #month", function()
+		assert.same({2012,12,1,0,0,0}, {timetable.normalise(2013,0,1,0,0,0)})
+		assert.same({2016,6,1,0,0,0}, {timetable.normalise(2013,42,1,0,0,0)})
 
 		-- Correct behaviour around leap days
-		assert.same({ 2012,3,23,0,0,0 }, { timetable.normalise(2012,2,52,0,0,0) })
-		assert.same({ 2013,3,24,0,0,0 }, { timetable.normalise(2013,2,52,0,0,0) })
+		assert.same({2012,3,23,0,0,0}, {timetable.normalise(2012,2,52,0,0,0)})
+		assert.same({2013,3,24,0,0,0}, {timetable.normalise(2013,2,52,0,0,0)})
 
-		assert.same({ 2012,2,27,0,0,0 }, { timetable.normalise(2012,3,-2,0,0,0) })
-		assert.same({ 2013,2,26,0,0,0 }, { timetable.normalise(2013,3,-2,0,0,0) })
+		assert.same({2012,2,27,0,0,0}, {timetable.normalise(2012,3,-2,0,0,0)})
+		assert.same({2013,2,26,0,0,0}, {timetable.normalise(2013,3,-2,0,0,0)})
 
 		-- Also when more fields are out of range
-		assert.same({ 2016,7,22,0,0,0 }, { timetable.normalise(2013,42,52,0,0,0) })
-		assert.same({ 2016,7,24,2,0,0 }, { timetable.normalise(2013,42,52,50,0,0) })
-	end )
-
-	it ( "#normalise handles fractional #month" , function ( )
-		assert.same({ 2015,2,15,0,0,0 } , { timetable.normalise(2014,14.5,1,0,0,0) })
-		assert.same({ 2016,2,15,12,0,0 } , { timetable.normalise(2015,14.5,1,0,0,0) }) -- leap year, so hours is 12
-		assert.same({ 2017,2,15,0,0,0 } , { timetable.normalise(2016,14.5,1,0,0,0) })
-	end )
-
-	it ( "#normalise handles negative carry (issue #10)", function()
-		assert.same({ 1970,01,01,00,59,00 }, { timetable.normalise(1970,01,01,01,00,-60) })
-		assert.same({ 1970,01,01,00,58,58 }, { timetable.normalise(1970,01,01,01,00,-62) })
-		assert.same({ 1969,12,31,23,55,58 }, { timetable.normalise(1970,01,01,01,-63,-62) })
-		assert.same({ 2017,02,3,0,0,0 }, { timetable.normalise(2017,02,13,0,-14400,0) })
-	end )
-
-	it ( "#normalise handles negative day carry (issue #13)", function()
-		assert.same({ 2016,11,30,00,00,00 }, { timetable.normalise(2016,12,0,0,0,0) })
-		assert.same({ 2017,11,30,00,00,00 }, { timetable.normalise(2017,12,0,0,0,0) })
-		assert.same({ 2018,11,30,00,00,00 }, { timetable.normalise(2018,12,0,0,0,0) })
-	end )
+		assert.same({2016,7,22,0,0,0}, {timetable.normalise(2013,42,52,0,0,0)})
+		assert.same({2016,7,24,2,0,0}, {timetable.normalise(2013,42,52,50,0,0)})
+	end)
+
+	it("#normalise handles fractional #month", function()
+		assert.same({2015,2,15,0,0,0}, {timetable.normalise(2014,14.5,1,0,0,0)})
+		assert.same({2016,2,15,12,0,0}, {timetable.normalise(2015,14.5,1,0,0,0)}) -- leap year, so hours is 12
+		assert.same({2017,2,15,0,0,0}, {timetable.normalise(2016,14.5,1,0,0,0)})
+	end)
+
+	it("#normalise handles negative carry (issue #10)", function()
+		assert.same({1970,01,01,00,59,00}, {timetable.normalise(1970,01,01,01,00,-60)})
+		assert.same({1970,01,01,00,58,58}, {timetable.normalise(1970,01,01,01,00,-62)})
+		assert.same({1969,12,31,23,55,58}, {timetable.normalise(1970,01,01,01,-63,-62)})
+		assert.same({2017,02,3,0,0,0}, {timetable.normalise(2017,02,13,0,-14400,0)})
+	end)
+
+	it("#normalise handles negative day carry (issue #13)", function()
+		assert.same({2016,11,30,00,00,00}, {timetable.normalise(2016,12,0,0,0,0)})
+		assert.same({2017,11,30,00,00,00}, {timetable.normalise(2017,12,0,0,0,0)})
+		assert.same({2018,11,30,00,00,00}, {timetable.normalise(2018,12,0,0,0,0)})
+	end)
 
 	local function round_trip_add(t, field, x)
 		local before = t:clone()
@@ -112,11 +112,11 @@ describe ( "Timetable library" , function ( )
 		t:normalise();
 		assert.same(0, t-before)
 	end
-	it ( "#normalise round trips" , function ( )
+	it("#normalise round trips", function()
 		round_trip_add(timetable.new(2000,2,28,0,0,0), "month", 0.5)
 		round_trip_add(timetable.new(2014,8,28,19,23,0), "month", 0.4)
 		round_trip_add(timetable.new(2014,14.5,28,0,0,0), "month", 0.4)
-	end )
+	end)
 
 	it("#rfc_3339 works with fractional milliseconds", function()
 		-- on lua 5.3 this used to throw an error due to milliseconds not being an integer
@@ -129,4 +129,4 @@ describe ( "Timetable library" , function ( )
 		assert.same("1969-12-31T23:59:59.999", timetable.new_from_timestamp(-0.001):rfc_3339())
 		assert.same("1969-12-31T23:59:00.000", timetable.new_from_timestamp(-59.9999999):rfc_3339())
 	end)
-end )
+end)
-- 
2.39.5