Dear Eric,
I will leave all your code for reference, and add one more
for OpenBSD. The really bad news is that uClibc (Berin 1.2/3.1)
is assymmetric: five hits, where I went to efforts to construct
symmetric test cases. As for AIX, the answer is symmetric, but
could you possible test a deeper grouping of patterns:
echo -e "abab\nbaab\nabba" | egrep '^((a?[ab])|ba){2}$'
echo -e "abab\nbaab\nabba" | egrep '^(ba|(a?[ab])){2}$'
This additional depth does not change anything to GNU-regex,
but fits perfectly with the point where AIX failed.
Does anyone have access to a Solaris system?
Regards
Mats E A
>>>>>>>>>>>>>>>>>>>>>>>>>>>>
on OpenBSD 4.2
>>>>>>>>>>>>>>>>>>>>>>>>>>>>
6 matches out of intended 6.
abab
baab
abba
abab
baab
abba
fre 2008-02-29 klockan 13:26 +0000 skrev Erich Titl:
> Hi Mats
>
> Just out of curiosity I tested your code
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> on AIX
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> # #!/bin/sh
> #
> # lager=/tmp/tillf
> #
> # {
> > echo -e "abab\nbaab\nabba" | egrep '^(a?[ab]|ba){2}$'
> > echo -e "abab\nbaab\nabba" | egrep '^(ba|a?[ab]){2}$'
> > } > $lager # | tee $lager
> #
> # echo "$(wc -l < $lager) matches out of intended 6."
> 4 matches out of intended 6.
> # cat $lager
> baab
> abba
> baab
> abba
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> On a SuSE 10.0
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> [EMAIL PROTECTED]:~> echo "$(wc -l < $lager) matches out of intended 6."
> 6 matches out of intended 6.
> [EMAIL PROTECTED]:~> cat $lager
> abab
> baab
> abba
> abab
> baab
> abba
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> On Bering 1.2
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> greatwall: -root-
> # echo "$(wc -l < $lager) matches out of intended 6."
> 5 matches out of intended 6.
>
> greatwall: -root-
> # cat $lager
> abab
> abba
> abab
> baab
> abba
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> On Bering 3.x
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> gatekeeper# #!/bin/sh
> gatekeeper#
> gatekeeper# lager=/tmp/tillf
> gatekeeper#
> gatekeeper# {
> > echo -e "abab\nbaab\nabba" | egrep '^(a?[ab]|ba){2}$'
> > echo -e "abab\nbaab\nabba" | egrep '^(ba|a?[ab]){2}$'
> > } > $lager # | tee $lager
> gatekeeper#
> gatekeeper# echo "$(wc -l < $lager) matches out of intended 6."
> 5 matches out of intended 6.
> gatekeeper# cat $lager
> abab
> abba
> abab
> baab
> abba
>
> In this selection the only system which interprets your code 'right' is
> a fully blown linux. Mind you, Bering 1.2 has a sed binary as does AIX.
>
> I guess your code is not very portable then :-(
>
> cheers
>
> Erich
>
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