[Omake] variable capture in anonymous functions

[Aleksey Nogin]

Chris,

Yes, weird indeed. I guess manual alpha-renaming to avoid capture is the 
only way until 0.9.8.6 comes out :-(

Aleksey

On 18.03.2008 16:52, Christopher L Conway wrote:

> Aleksey,
> 
> Thanks for the suggestion. But...
> 
> $ cat OMakefile
> X = re
> Y = flux
> 
> F = $(fun X, Y, $(addsuffix $(protected.Y), $(protected.X)))
> 
> println( $(F foo, bar) )
> 
> $ omake
> make[0]: Entering directory `/media/sda6/src/tests/omake/omake.8'
> *** omake: reading OMakefiles
> fooflux
> *** omake: finished reading OMakefiles (0.02 sec)
> *** omake: done (0.02 sec, 0/0 scans, 0/0 rules, 1/33 digests)
> 
> That's weird!
> 
> Chris
> 
> 
> On Tue, Mar 18, 2008 at 7:36 PM, Aleksey Nogin <anogin at hrl.com> wrote:
>> Chris,
>>
>>  Sorry for taking so long for me to respond.
>>
>>  Yes, this is a very well-known bug and it's fixed in 0.9.8.x SVN (the
>>  upcoming 0.9.8.6 release will change the syntax of the "fun" function).
>>
>>  A temporary workaround is to use $(protected.X) in the body - this will
>>  tell OMake which "X" to look for...
>>
>>  Aleksey
>>
>>
>>
>>  On 04.03.2008 20:15, Christopher L Conway wrote:
>>
>>  > I'm seeing variable bindings from the surrounding scope override
>>  > parameter bindings in anonymous functions. Is there something I am
>>  > missing about the scoping rules?
>>  >
>>  > $ cat Omakefile
>>  > X = zanzi
>>  >
>>  > apply($(fun X, $(println $(X)bar)), foo)
>>  > apply($(fun Y, $(println $(Y)bar)), foo)
>>  >
>>  > $ omake
>>  > make[0]: Entering directory `/media/sda6/src/tests/omake/omake.8'
>>  > *** omake: reading OMakefiles
>>  > zanzibar
>>  > foobar
>>  > *** omake: finished reading OMakefiles (0.02 sec)
>>  > *** omake: done (0.02 sec, 0/0 scans, 0/0 rules, 0/33 digests)
>>  > $ omake --version
>>  > OMake 0.9.8.5 (release 2):
>>  >       build [Wed Aug 8 09:10:36 2007]
>>  >       on wagstaff
>>  >
>>  > Default library directory : /home/chris/tools/lib/omake
>>  >
>>  > Thanks,
>>  > Chris
>>  > _______________________________________________
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>>  >
>>
>>
>>  --
>>  Aleksey Nogin, Research Scientist
>>  Advanced Technologies Department, Information & System Sciences Lab
>>  HRL Laboratories, LLC, Malibu, CA
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>>
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