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-- trace calls

-- example: lua -ltrace-calls bisect.lua

local level=0

local function hook(event)

local t=debug.getinfo(3)

io.write(level," >>> ",string.rep(" ",level))

if t~=nil and t.currentline>=0 then io.write(t.short_src,":",t.currentline," ") end

t=debug.getinfo(2)

if event=="call" then

level=level+1

else

level=level-1 if level<0 then level=0 end

end

if t.what=="main" then

if event=="call" then

io.write("begin ",t.short_src)

else

io.write("end ",t.short_src)

end

elseif t.what=="Lua" then

-- table.foreach(t,print)

io.write(event," ",t.name or "(Lua)"," <",t.linedefined,":",t.short_src,">")

else

io.write(event," ",t.name or "(C)"," [",t.what,"] ")

end

io.write("\n")

end

debug.sethook(hook,"cr")

level=0