Question about behavior of redirections inside an if construct

[Thomas Schwinge]

Hello!

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

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

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

(no output)


Regards,
 Thomas

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