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Fix number-nil comparison in [for]

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This commit is contained in:
Celtic Minstrel 2016-10-26 15:15:47 -04:00
parent 2ab52fdb36
commit 293151687c
1 changed files with 7 additions and 4 deletions
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11
data/lua/wml-flow.lua
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@ -105,10 +105,13 @@ wesnoth.wml_actions["for"] = function(cfg)
if loop_lim.step == 0 then -- Sanity check
helper.wml_error("[for] has a step of 0!")
end
if (first < loop_lim.last and loop_lim.step <= 0) or (first > loop_lim.last and loop_lim.step >= 0) then
-- Sanity check: If they specify something like start,end,step=1,4,-1
-- then we do nothing
return
if loop_lim.step ~= nil then
if (first < loop_lim.last and loop_lim.step <= 0)
or (first > loop_lim.last and loop_lim.step >= 0) then
-- Sanity check: If they specify something like start,end,step=1,4,-1
-- then we do nothing
return
end
end
local i_var = cfg.variable or "i"
local save_i = utils.start_var_scope(i_var)