From: Pit Capitain <pit@...>
Date: 2006-06-22T19:47:07+09:00
Subject: Re: bug in $. ?

Wybo Dekker schrieb:
> Sure, but that is part of the bug, in my opinion. After DATA.rewind I 
> want to see the first line of the DATA section again. If I want to see 
> the program source, I can use $0

Makes sense. According to Matz's reply, he sees a bug somewhere, too. Maybe he 
just wants to fix writing to $. as Guy has shown, maybe he wants to restrict 
DATA to the section after the __END__, as you had expected.

If you search the ruby-talk archives, you'll find ways to reset DATA to the 
position after the __END__, if you need this behaviour.

BTW: you can get to the current file via __FILE__, not $0.

>> Why do you need $. to start from 0 when reading from DATA? What is it 
>> that you're trying to do?
> 
> In this case, I wanted to skip the first line: next if $.==1

Admitted, to do something with the n-th line of the DATA section, you have to 
remember the line number offset before processing the DATA section. Not hard to 
do, but not as pretty as it could be.

> But it can, for example, also be used to errors in the DATA section:
>   raise("illegal key in line #{$.} of the DATA section")

In this case I'd prefer the current behaviour. My editors know nothing about the 
DATA section, so its easier to jump to line n of the current file instead of 
line n of the DATA section.

We'll see what Matz comes up with.

Regards,
Pit