Hello,
I typeset the following source:
======
\batchmode
\input luatexbase.sty
\scrollmode\catcode`\_=12
\directlua{
luatexbase.create_callback('test', 'data', function(n) return n end)
local fn = {}
for n=1,20 do
fn[n] = function()
texio.write(tostring(n) .. ', '); return 1
end
luatexbase.add_to_callback('test', fn[n], n, n)
end
luatexbase.call_callback('test', 0)
texio.write_nl('')
math.randomseed( os.time() )
for i=1,300 do
local n = math.random(20)
luatexbase.remove_from_callback('test', n) % remove fn[n]
luatexbase.add_to_callback('test', fn[n], n, n)
end
luatexbase.call_callback('test', 0)
}
\batchmode\bye
======
and I got the following output:
======
This is LuaTeX, Version beta-0.81.1 (TeX Live 2016/dev) (rev 5460)
restricted \write18 enabled.
(./ltb_callback.tex
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 19, 15, 13, 17, 18, 20, 16,
======
(The luatex binary is compiled by myself, and I used
luatexbase.sty 2015/10/04 v1.3.)
The latter half of the source (after 'math.randomseed(...)') does
removing & reinserting a function from a callback. So, I think that
the 2 lines in the output should be identical, but not so.
Regards
Hironori KITAGAWA <[email protected]>
