Re: &&||

[Ray Andrews <rayandrews@eastlink.ca>]

On 19/02/18 01:57 PM, Peter Stephenson wrote:
> You never need to use output from ls in a shell
Yeah, I was just trying to make a fast list of something to filter. 
Mind, I do tend to forget about zsh's internal power when it comes to 
that sort of thing so the reminder is welcome.

> Do you mean just "true"? Not sure what putting this in square brackets 

Right, 'true' and 'false' live without any syntactic wrapping.  I forgot.

> is supposed to achieve.  It does work, but purely by virtue of the fact
>
> You can affect the precedence with braces, but they need to surround the
> "&&" or "||" expression you want to protect.  In your case you've simply
> surrounded a pipeline which would be run in one go anyway:
That's my question, could my code be made to work more or less as it 
is?  I was expecting the braces to work.  Otherwise I fairly well 
understand the basic rules esp. the left>right thing, it really does 
make life a bit simpler.  Mind, I suppose that since return values are 
always suspect perhaps an if/else construction really is just better.