Can you guess what each is going to print before you run it?

Its unlikely many will that dont already know of this bug. I certainly didn't. And im pretty sure this is a bug and in my eyes not in the slightest bit beautiful. For those that want this spelled out. (Update: actually maybe it isnt a bug, suprising as hell, but not a bug.)

This should be

  1. 'bar'
  2. syntax error. $\ is a legal var name so it should parse as " ' $\ " ' " the last two tokens being a syntax error.
  3. '
    ;'
  4. Similar error to 2.

Instead its 'best' for them all. Very tricky, and IMO a bug. $\; should not parse as $; in a double quoted string. Likewise for $\;

Update: Except that im wrong. The rules are: Find the end, unescape any escaped delimiters, handle interpolation. Thus the $\; becomes $; before the interpolation scan starts, which explains this brain teaser. And IMO is worth a perldoc update just to point it out. ++ to bart and buu.


---
demerphq

    First they ignore you, then they laugh at you, then they fight you, then you win.
    -- Gandhi

In reply to Re: The beauty that is perl. by demerphq
in thread The beauty that is perl. by BUU

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