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Re: how does escaping in "`...`" work?

From: Bob Proulx
Subject: Re: how does escaping in "`...`" work?
Date: Mon, 7 Jun 2010 16:56:22 -0600
User-agent: Mutt/1.5.18 (2008-05-17)

Matthew Woehlke wrote:
> How should bash interpret escapes in constructs like "`...`"?

The quoting rules for backticks are complex enough that the entire
construct has long been replaced with a completely different one.  I
strongly suggest that instead of struggling to get the backtick syntax
quoted satisfactorily that you use $(...) instead.  The rules there
are much more reasonable.

> $ echo "`echo "you don't   say"`"
> you don't   say

  echo "$(echo "you don't   say")"

> Is this how it is supposed to work?

Patient: Doctor, it hurts when I do this.
Doctor: Then don't do that.

Switch to using $(...) and you will be much less troubled by these
types of problems.


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