Re: PATCH: array slice

[Bart Schaefer <schaefer@brasslantern.com>]

On Jun 26,  2:51pm, Peter Stephenson wrote:
}
} It looks like half closing your eyes, sticking your fingers in your
} ears, and copying what's there already does the trick.

Very good!  Just a couple of notes ...

This error message looks odd:

torch% typeset y[2,4]=(x)
typeset: y[2,4]: can't create local array elements

I guess that isn't new, but to refer to "local" at top-level prompt is
funny.  "(on & PM_LOCAL)" is evidently true even though the typeset is
not within function scope.  Amusingly it works to simply force the
variable to be global:

torch% typeset -g y[2,4]=(x)            
torch% typeset -p y
typeset -a y
y=('' x)

And an array is always created for this, even without the parens:

torch% typeset -g z[2,4]=y
torch% typeset -p z       
typeset -a z
z=('' y)

Lastly, handling slices still doesn't fix the empty array assignment:

torch% typeset x=() x[1]=1 x[3]=3
torch% typeset -p x
typeset -a x
x=(1 '' 3)
torch% typeset x=() x[2]=b x[4]=d
torch% typeset -p x              
typeset -a x
x=(1 b 3 d)
torch% typeset x[2]=2 x[4]=4 x=()
torch% typeset -p x              
typeset -a x
x=(1 2 3 4)

Although this works:

torch% typeset x[1,-1]=()
torch% typeset -p x
typeset -a x
x=()
torch% typeset x[2]=b x[4]=d x[1,3]=()
torch% typeset -p x
typeset -a x
x=(d)