# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1559217251 -7200
# Node ID 386f085820e6fd1bfebccca5a2de4ff3b7f80d77
# Parent  4fca92d60040e306c0250b9ed4943fc47c1aaa7e
util.format: Handle integer formats the same way on Lua versions without integer support

diff -r 4fca92d60040 -r 386f085820e6 spec/util_format_spec.lua
--- a/spec/util_format_spec.lua	Thu May 30 13:41:05 2019 +0200
+++ b/spec/util_format_spec.lua	Thu May 30 13:54:11 2019 +0200
@@ -13,6 +13,7 @@
 			assert.equal("% [true]", format("%%", true));
 			assert.equal("{ }", format("%q", { }));
 			assert.equal("[1.5]", format("%d", 1.5));
+			assert.equal("[7.3786976294838e+19]", format("%d", 73786976294838206464));
 		end);
 	end);
 end);
diff -r 4fca92d60040 -r 386f085820e6 util/format.lua
--- a/util/format.lua	Thu May 30 13:41:05 2019 +0200
+++ b/util/format.lua	Thu May 30 13:54:11 2019 +0200
@@ -7,9 +7,12 @@
 local pack = require "util.table".pack; -- TODO table.pack in 5.2+
 local type = type;
 local dump = require "util.serialization".new("debug");
-local num_type = math.type;
+local num_type = math.type or function (n)
+	return n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float";
+end
 
-local expects_integer = num_type and { c = true, d = true, i = true, o = true, u = true, X = true, x = true, } or {};
+-- In Lua 5.3+ these formats throw an error if given a float
+local expects_integer = { c = true, d = true, i = true, o = true, u = true, X = true, x = true, };
 
 local function format(formatstring, ...)
 	local args = pack(...);