[Slackbuilds-users] Possible typo in python3.SlackBuild

[Christoph Willing]

On 01/09/2015 04:35 PM, Niki Kovacs wrote:
> Hi,
>
> I just noticed a strange line in python3.SlackBuild:
>
> PYVER=${VERSION::3}
>
> I only know this kind of notation:
>
> PYVER=${VERSION:-3}
>
> Is this an error or some special syntax I don't know?

 From the Parameter Expansion section of the bash manpage:

${parameter:offset:length}
     Substring  Expansion.  Expands to up to length characters of the
     value of parameter starting at the character specified  by  off-set.

Its not stated there but I presume a blank offset defaults it to 0, 
therefore for a VERSION of 3.4.2, PYVER would be set to 3.4

chris