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Question about behavior of redirections inside an if construct


From: Thomas Schwinge
Subject: Question about behavior of redirections inside an if construct
Date: Thu, 29 Jan 2009 16:53:50 +0100
User-agent: Mutt/1.5.11

Hello!

I'm probably only missing something very obvious, but...

    address@hidden:~ $ bash --version
    GNU bash, version 3.2.39(1)-release (i486-pc-linux-gnu)
    Copyright (C) 2007 Free Software Foundation, Inc.
    address@hidden:~ $ bash -c 'if { :; } 2> /dev/null < NONEXISTING_FILE; then 
:; else echo >&2 OK; fi'
    OK
    address@hidden:~ $ sh -c 'if { :; } 2> /dev/null < NONEXISTING_FILE; then 
:; else echo >&2 OK; fi'
    OK
    address@hidden:~ $ bash -c 'if : 2> /dev/null < NONEXISTING_FILE; then :; 
else echo >&2 OK; fi'
    OK

These three work as expected.  But why doesn't the following one?

    address@hidden:~ $ sh -c 'if : 2> /dev/null < NONEXISTING_FILE; then :; 
else echo >&2 OK; fi'

(no output)


Regards,
 Thomas

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