Bug in egrep?

[Martin Marusak]

OpenBSD egrep finds nothing in any text:
---
% echo "some text here" | egrep -x "" ; echo $status
some text here
0
---

GNU grep does not:
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% echo "some text here" | gegrep -x "" ; echo $status
1
---
Isn't that a bug in OpenBSD egrep?

M.