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On 17/02/17 04:34 PM, Soni L. wrote:



On 17/02/17 04:29 PM, Roberto Ierusalimschy wrote:

You should remove the 'const' here, but otherwise the assignment is
correct; ANSI C assures that the strings pointed to by 'argv' are
modifiable (and you don't need to restore its value).

-- Roberto


Wouldn't that affect `arg`? Or is `arg` created before any argument
processing takes place?

'arg' is created before any processing, because it is available to
that processing:

-- t2.lua
print(#arg)


$ LUA_INIT='@t2.lua' lua -l t2 t2.lua b c
   --> 2
   --> 2
   --> 2

-- Roberto



Does this mean the result of -l could be tweaked by a LUA_INIT script?



Wait, this behaviour should be tweaked...
What if `lua` loaded everything into `arg` as it appears, then started up LUA_INIT, then started processing `arg` and moving the elements around, so e.g. your command would print: 

--> 5
--> 3
--> 2

Then LUA_INIT would be able to process -l, thus doing what dirk wants.

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