Paul followed up (an expression that suddenly, after I've been seeing it on
the net for a decade and a half, suddenly strikes me as remarkably similar to
"frowed up"),
| That was the gist of my question; I was wondering if there was any
| significant performance difference between the two.
Under some OSes, recent versions of procmail cause coredumps if you attempt a
variable capture recipe. Other than that I don't rightly know. The advantage
to a variable capture recipe is that you can feed only the head or only the
body to it if you want; that's impossible with a backquote assignment.
Backquote assignments can be done conditionally:
:0
* condition
{ VARIABLE=`command -opts args` }
so restricting execution to situations where it is needed is not an advantage
for variable capture.
| For example, is it safe to assume that VARIABLE=|command notation
| uses SHELLMETAS in exactly the same way as just a | on an action line?
Don't assume it. Believe it. Believe it safely. It's true.
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