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On 23/04/2014 12:26, Dirk Laurie wrote:

2014-04-23 16:12 GMT+02:00 Roberto Ierusalimschy <roberto@inf.puc-rio.br>:

IMHO it is a bug that tbl[inf] and tbl[-inf] does not work.

?

$ uname -a
Linux jeremia 3.2.0-54-generic #82-Ubuntu SMP Tue Sep 10 20:08:42 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
$ lua
Lua 5.2.3  Copyright (C) 1994-2013 Lua.org, PUC-Rio

pinf=1/0
minf=-pinf
tbl={pinf=pinf,minf=minf}
=tbl[pinf],tbl[minf]

nil    nil


Maybe you should try doing {[pinf]=pinf,[minf]=minf} instead...