David Kastrup <address@hidden> writes:
Basically it has been my experience that query-replace-regexp-eval
is a nice idea, but in practice quite unusable. \, achieves a
similar purpose but with a much more convenient interface.
To get back to the original question: since \, has all of the
functionality of query-replace-regexp-eval with a more convenient
interface, query-replace-regexp-eval could be considered obsolete or
at least obscure.
Since we tell people how to do the same thing more flexibly with \, I
don't think that query-replace-regexp-eval deserves a place in the
manual. It would be a lot of additional explanation without any
conceivable benefit to the user.