Bug in grep using option "--color"

[Saigam]

Hi.

When I make a command like:
echo some text | grep '.*' --color
The grep command does not return the console.
If I not use this option all works fine.
While the grep does not return it uses 10% of
my CPU continuously.
Similar error occurs with "-o" option.

I think that this type of regex is rarely used,
but this is quite useful for highlight all
text, for example.

grep --version = 2.5

Thanks by attention.

--
Saigam