Re: [bug-gawk] BUG: Gawk interval expression metacharacter {} is not working as expected

[arnold]

Davide's answer is right.  Thanks Davide.

If you don't understand why, let me know.

Arnold

Davide Brini <address@hidden> wrote:

> On Sat, 18 Nov 2017 12:13:04 -0500, "Quantum.Saturn"
> <address@hidden> wrote:
>
> > Hi,
> > 
> > I have reported the following bug with Ubuntu distribution.
> > This needs to go upstream, so I reporting it here.
> > 
> > BUG DESCRIPTION:
> > The interval expression metacharacter {} is not working as expected. The
> > problem specifically being when the interval is defined on the first
> > character of the string/record. Otherwise if the interval is defined on
> > any other character apart from the first in the string then its working
> > as expected.
> > 
> > INPUT FILE DATA: metacharfile
> > jas
> > jjas
> > jjjas
> > jjjjas
> > jjjjjas
> > 
> > COMMAND:
> > # gawk '/j{1,3}as/' ./metacharfile
> > 
> > EXPECTED RESULT:
> > jas
> > jjas
> > jjjas
> > 
> > ACTUAL RESULT:
> > jas
> > jjas
> > jjjas
> > jjjjas
> > jjjjjas
>
> You forgot to anchor the expression to the beginning of the string to match.
> Try with
>
> # gawk '/^j{1,3}as/' ./metacharfile
>
> -- 
> D.