From: David Alan Black <dblack@...>
Date: 2001-11-03T08:19:17+09:00
Subject: [ruby-talk:24229] Re: literal \0 in String#gsub replacement

Hello --

On Sat, 3 Nov 2001, Ryan Leavengood wrote:

> > Here's one way:
> >
> >   irb 23> "apple [cherry] lemon".gsub(/\[(.*?)\]/, "\003\\1")
> >        ==>"apple \003cherry lemon"
>
> Actually I tried that too in IRB but when I tried it in actual Ruby I
> was surprised.  That results in the string containing the actual ASCII
> character with code 003 (which printed as a heart on my Cygwin console.)
> Since IRB actually calls "inspect" when it prints out, you got what you
> saw.  To actually get a literal \003 in the resulting String, I found
> that this worked:
>
> "apple [cherry] lemon".gsub(/\[(.+?)\]/,'\\\003\1')
>
> So Mark, if you want the ASCII character with code 003, use DAB's
> method, but if you want the literal \003, then use the above.

I seem to be on a "heisenbug" spree: first getting bitten by shell
quoting, now this :-)


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav