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Re: function invoking alias fails if defined in same conditional


From: Chet Ramey
Subject: Re: function invoking alias fails if defined in same conditional
Date: Sat, 17 Mar 2012 12:16:45 -0400
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On 3/17/12 8:09 AM, Eric Blake wrote:
> On 03/16/2012 02:56 PM, gregrwm wrote:
>> a function invoking an alias works, unless they are defined within the same 
>> conditional, eg:
> 
> Thanks for the report, but this is not a bug.  Remember, aliases affect
> parsing, so they can only be expanded during the parsing phase.  But
> bash has to parse until the end of a compound command before it can do
> any action within the command.  In that sense, 'alias' is exactly like
> 'set -v' just recently discussed here:
> https://lists.gnu.org/archive/html/help-bash/2012-03/msg00025.html

The manual page has this to say:

"To be safe, always
put alias definitions on a separate line, and do not use alias in  com-
pound commands."

Chet
- -- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/
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