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Re: Tilde expansion not performed during variable evaluation


From: Paul Jarc
Subject: Re: Tilde expansion not performed during variable evaluation
Date: Wed, 11 Oct 2006 00:44:19 -0400
User-agent: Gnus/5.110003 (No Gnus v0.3) Emacs/21.4 (gnu/linux)

Karen Etheridge <address@hidden> wrote:
>     Tilde expansion is not being performed when variables are being evaluated.

That's normal, documented behavior.  man bash, EXPANSION:
       The order of expansions is: brace expansion, tilde expansion,
       parameter, variable and arithmetic expansion and command
       substitution (done in a left-to-right fashion), word splitting,
       and pathname expansion.

So after parameter expansion, it's too late for tilde expansion.  If
you know that tilde is the only special character in your variable,
you could use eval to pass it through a second round of expansion.


paul




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