[9fans] plan9port awk problem

[9fans] plan9port awk problem

[Rudolf Sykora]

Hello,

My p9p awk, besides not having a manpage, also has a problem (plan9
version itself works fine, though):

;9 awk 'BEGIN {OFMT="%.0f"; print 17.23}'
17.23
;awk 'BEGIN {OFMT="%.0f"; print 17.23}'
17

Is p9p awk different from plan9's?!

Thanks
Ruda

Re: [9fans] plan9port awk problem

[erik quanstrom]

On Mon Apr 19 11:38:47 EDT 2010, rudolf.sykora@gmail.com wrote:
> Hello,
>
> My p9p awk, besides not having a manpage, also has a problem (plan9
> version itself works fine, though):
>
> ;9 awk 'BEGIN {OFMT="%.0f"; print 17.23}'
> 17.23
> ;awk 'BEGIN {OFMT="%.0f"; print 17.23}'
> 17
>
> Is p9p awk different from plan9's?!

this is a bug that bwk fixed.  it is fixed in the
new port of awk to plan 9, but not in the distribution
the new port is contrib quanstro/awk.

- erik

Re: [9fans] plan9port awk problem

[Rudolf Sykora]

> this is a bug that bwk fixed.  it is fixed in the
> new port of awk to plan 9, but not in the distribution
> the new port is contrib quanstro/awk.
>
> - erik


I don't get it.
As I said, awk in plan9 works ok in the mentioned respect.
I said that plan9port awk gets it wrong for some reason...

R

Re: [9fans] plan9port awk problem

[erik quanstrom]

> I don't get it.
> As I said, awk in plan9 works ok in the mentioned respect.
> I said that plan9port awk gets it wrong for some reason...
>
> R

i just ran awk from sources.  it produces the same
output as you produced for p9p awk.  if you say
that p9p awk is wrong, then plan 9 awk is wrong
too since it produces the same output.

here's what you had:

	;9 awk 'BEGIN {OFMT="%.0f"; print 17.23}'
	17.23
	;awk 'BEGIN {OFMT="%.0f"; print 17.23}'
	17

and here's what the awk as distributed on sources does
	minooka; /n/sources/plan9/386/bin/awk 'BEGIN {OFMT="%.0f"; print 17.23}'
	17.23

yet here's what the awk done with bwk's current sources does
	minooka; awk 'BEGIN {OFMT="%.0f"; print 17.23}'
	17

- erik

Re: [9fans] plan9port awk problem

[Rudolf Sykora]

On 19 April 2010 18:45, erik quanstrom <quanstro@quanstro.net> wrote:
>> I don't get it.
>> As I said, awk in plan9 works ok in the mentioned respect.
>> I said that plan9port awk gets it wrong for some reason...
>>
>> R
>
> i just ran awk from sources.  it produces the same
> output as you produced for p9p awk.  if you say
> that p9p awk is wrong, then plan 9 awk is wrong
> too since it produces the same output.
>
> here's what you had:
>
>        ;9 awk 'BEGIN {OFMT="%.0f"; print 17.23}'
>        17.23
>        ;awk 'BEGIN {OFMT="%.0f"; print 17.23}'
>        17
>
> and here's what the awk as distributed on sources does
>        minooka; /n/sources/plan9/386/bin/awk 'BEGIN {OFMT="%.0f"; print 17.23}'
>        17.23
>
> yet here's what the awk done with bwk's current sources does
>        minooka; awk 'BEGIN {OFMT="%.0f"; print 17.23}'
>        17
>
> - erik
>
>
Then something strange must have happened recently...
Or something like that.
I had checked and now did it again, on my plan 9 computer, that I get 17.
R

Re: [9fans] plan9port awk problem

[Rudolf Sykora]

> Then something strange must have happened recently...
> Or something like that.
> I had checked and now did it again, on my plan 9 computer, that I get 17.
> R
>
ls -l /bin/awk
says it's from Dec 1 20:23, 334087 bytes.
R

Re: [9fans] plan9port awk problem

[erik quanstrom]

On Mon Apr 19 12:54:16 EDT 2010, rudolf.sykora@gmail.com wrote:
> > Then something strange must have happened recently...
> > Or something like that.
> > I had checked and now did it again, on my plan 9 computer, that I get 17.
> > R
> >
> ls -l /bin/awk
> says it's from Dec 1 20:23, 334087 bytes.
> R

it appears that you installed my contrib verison of awk:
(or used 9atom)

; ls -l /n/sources/contrib/quanstro/root/386/bin/awk
--rwxrwxr-x M 450 quanstro sys 334087 Dec  1 14:23 /n/sources/contrib/quanstro/root/386/bin/awk

- erik

Re: [9fans] plan9port awk problem

[EBo]

> this is a bug that bwk fixed.  it is fixed in the
> new port of awk to plan 9, but not in the distribution
> the new port is contrib quanstro/awk.

sorry, I'm confused here.  Does that mean that we should use contrib
quanstro/awk? Or not?

Re: [9fans] plan9port awk problem

[Rudolf Sykora]

> it appears that you installed my contrib verison of awk:
> (or used 9atom)
>
> ; ls -l /n/sources/contrib/quanstro/root/386/bin/awk
> --rwxrwxr-x M 450 quanstro sys 334087 Dec  1 14:23 /n/sources/contrib/quanstro/root/386/bin/awk
>
> - erik
>

Yes, that's it. 9atom is what I used... :)

So, now I join those people asking: what's the difference between
9atom awk, current sources awk, bwk, what else? Why are there so many
of them?

Thanks
Ruda

Re: [9fans] plan9port awk problem

[Vivien MOREAU]

Monday 19 Apr 2010 � 19:19:14 (+0200), Rudolf Sykora wrote :

> So, now I join those people asking: what's the difference between
> 9atom awk, current sources awk, bwk, what else? Why are there so many
> of them?

bwk is not an awk implementation.
<http://www.cs.princeton.edu/~bwk/>

	:-)

--
Vivien MOREAU

Re: [9fans] plan9port awk problem

[erik quanstrom]

On Mon Apr 19 13:20:13 EDT 2010, rudolf.sykora@gmail.com wrote:
> > it appears that you installed my contrib verison of awk:
> > (or used 9atom)
> >
> > ; ls -l /n/sources/contrib/quanstro/root/386/bin/awk
> > --rwxrwxr-x M 450 quanstro sys 334087 Dec  1 14:23 /n/sources/contrib/quanstro/root/386/bin/awk
> >
> > - erik
> >
>
> Yes, that's it. 9atom is what I used... :)
>
> So, now I join those people asking: what's the difference between
> 9atom awk, current sources awk, bwk, what else? Why are there so many
> of them?

there are two versions.

there's the official sources version.  it's based on bwk's source
from about 2000 or so.  this is what's used in p9p.

there's also the newer port (using the same framework).
it's based on bwk's latest version as of 20091101.  in addition,
i added some code to correct a floating point overflow bug
that was most noticable in using %x and %o formats.
(this bug was also present in gawk and every other version
of awk tested.  details were posted to the list.)

this version of awk is in 9atom and in contrib quanstro/awk.
feel free to diff away.  the differences are a bit greater than
they should be since erstwhile ken c changes made it easier
to avoid suprious edits to bwk's code.  diffs against bwk's code
should also be instructive.

so there are exactly two differences between the two versions
1) bwk's bug fixes
2) fix for implicit fpes.

- erik