From: Daniel Carrera <dcarrera@...>
Date: 2003-09-01T08:51:50+09:00
Subject: Re: `echo %!(*`

Try this:

 - `vorbiscomment #{oldName}`.each_line do |line|
 + `vorbiscomment "#{oldName}"`.each_line do |line|

The quotes should make the shell interpret the name literally, instead of 
seeing the brackets as a token.

Cheers,
Daniel.

On Mon, Sep 01, 2003 at 08:46:33AM +0900, Tom Felker wrote:
> On Mon, 01 Sep 2003 07:51:55 +0900, Daniel Carrera wrote:
> 
> > I'm not sure I understand what you're asking about backtick 
> > interpolation.  Can you give me a simple example of what you'd like the 
> > backtick to do so I understand beter?
> 
> oldName = "02_Ship_At_Sea_(Instrumental).ogg"
> tags = Hash.new
> `vorbiscomment #{oldName}`.each_line do |line|
> 	key, value = line.split("=", 2)
> 	tags[key.downcase] = value
> end
> # ...use tags to formulate proper filename and rename
> 
> # Errors:
> sh: -c: line 1: syntax error near unexpected token `('
> sh: -c: line 1: `vorbiscomment 02_Ship_At_Sea_(Instrumental).ogg'
> ....
> 
> If you use system, you can pass the arguments in an array, and the shell
> isn't used, so you can have arguments that the shell would barf on. 
> 
> system("echo !@#$%^&") == ""
> system("echo", "!@#$%^&") == "!@#$%^&")
> 
> I need a backtick method that works the same way.  Having popen work
> that way would be nice.  As it is, I think it's only possible with
> popen("-"), having the child exec in such a way as to not interpolate
> the arguments, and reading from that.
> 
> -- 
> Tom Felker, <tcfelker@mtco.com>
> <http://vlevel.sourceforge.net> - Stop fiddling with the volume knob.
> 
> ruby -r complex -e 'c,m,w,h=Complex(-0.75,0.136),50,150,100;puts"P6\n#{w}\n#{h}\
> n255";(0...h).each{|j|(0...w).each{|i|n,z=0,Complex(.9*i/w,.9*j/h);while n<=m&&(
> z-c).abs<=2;z=z*z+c;n+=1 end;print [10+n*15,0,rand*99].pack("C*")}}'|display
> #by Michael Neumann AFAICT
> 

-- 
Daniel Carrera, Math PhD student at UMD.  PGP KeyID: 9AF77A88
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