Yes, I sometimes overlook the regular expression definitions.
On 16 January 2017 at 19:12, James Bonfield <j...@sanger.ac.uk> wrote:
> On Mon, Jan 16, 2017 at 06:56:39PM +0800, Colin Hercus wrote:
> > I always thought "*" was for sequence not stored rather than that the
> > sequence is zero length. But as it works I'll stick with it.
>
> You are correct that "*" is unspecified rather than zero size, but the
> specification states the sequence has to be "*" or 1+ bases so the
> empty string is not legal.
>
> It's one of the odd corner cases, but perhaps no more odd than wanting
> to store a zero length sequence! I assume you want it there simply as
> evidence that it existed? I wonder what other tools will break though.
>
> Another oddity is the one base long sequence with quality value 9. :)
>
> James
>
> --
> James Bonfield (j...@sanger.ac.uk) | Hora aderat briligi. Nunc et Slythia
> Tova
> | Plurima gyrabant gymbolitare vabo;
> A Staden Package developer: | Et Borogovorum mimzebant undique
> formae,
> https://sf.net/projects/staden/ | Momiferique omnes exgrabure Rathi.
>
>
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