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Re: about the ! builtin

From: Bruno Haible
Subject: Re: about the ! builtin
Date: Wed, 26 May 2004 14:07:06 +0200
User-agent: KMail/1.5

Paul Eggert wrote:

 +is therefore not portable in practice.  Typically it is easy to rewrite
> +such code, e.g.:
> +
> address@hidden
> +cmp file1 file2 >/dev/null 2>&1 || echo files differ or trouble
> address@hidden example

In my case this is not so easy, because it's inside a boolean expression
A && ! B && C. Can you please mention that the general replacement rule is

  ! statement;


  { if statement; then false; else true; fi; }

This also works in the not so easy cases.


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