while <() bug ?!

[rollor]

hi,

I do not know if it is really a bug,
it seems to me.

It is about the <() construction. When
it is used in a while it not work, but:

$ foo=foo


$ read -u63 foo <(echo bar)
2>/dev/null

$ echo $foo


bar

$ while read foo; do echo $foo; done
<(echo bar)
-/bin/bash: syntax error near
unexpected token `<(echo bar)'

$ foo=foo
$ exec 3< <(echo bar)
$ while read -u3 foo; do echo $foo;done
bar

$ foo=foo
$ exec 3< <(echo bar)
$ while read foo; do echo $foo;done 0<&3
bar

$ while read foo; do echo $foo; done <
<(echo bar)
bar

so, while and read together can read
from a fd, but when I use
while read l;do ..;done <(command)
it return a sintax error, why ?!
it is a bug in the syntax check ?!

and why using while ....; done <
<(cmd) works ?

please CC to me.

system:
$ echo $BASH_VERSION
2.05b.0(1)-release

running linux.

best regards,

rollor.



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