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-rw-r--r--util/format.lua7
1 files changed, 5 insertions, 2 deletions
diff --git a/util/format.lua b/util/format.lua
index 857bb694..1ce670f3 100644
--- a/util/format.lua
+++ b/util/format.lua
@@ -7,9 +7,12 @@ local unpack = table.unpack or unpack; -- luacheck: ignore 113/unpack
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(...);