Re: [bug-gawk] Is there a way to assign to a hash via the -v option

[Isabella Parakiss]

On Mon, Mar 07, 2016 at 08:40:19AM -0700, address@hidden wrote:
> Peng Yu <address@hidden> wrote:
> 
> > > David's suggestion is one option. Another is simply to mix the -e and -f
> > > command line options and do the assignment in a BEGIN rule suppplied
> > > on the command line.
> >
> > Can you provide an example for the above one?
> 
> Here you go, shell quoting tricks included:
> 
> $ cat test.awk
> BEGIN { print x[1], x[2] }
> 
> $ x1="this is x1" x2="this is x2"
> 
> $ cat test.awk
> BEGIN { print x[1], x[2] }
> 
> $ gawk -e 'BEGIN { x[1] = "'"$x1"'" ; x[2] = "'"$x2"'" }' -f test.awk
> this is x1 this is x2
> 
> 
> Arnold
> 

That's a bad, unsafe quoting example.

Better use something like this:
$ x1="this is x1" x2="this is x2"
$ export x1 x2
$ gawk -e 'BEGIN { x[1] = ENVIRON["x1"]; x[2] = ENVIRON["x2"] }' -f ...

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xoxo iza