RE: [External] : Continue cycling from a particular element in collection

[Drew Adams]

> It is a deficiency on the part of completing-read that makes
> INITIAL-INPUT unaware of COLLECTION and of REQUIRE-MATCH.

M-x report-emacs-bug

But specify clearly what you have in mind,
that is, what you _think_ you want.
___

INITIAL-INPUT is text to put in the minibuffer
at the outset.  It need not have any connection
with anything.  It need not ever be entered or
even edited.  It can be just a message "Happy
Birthday!", if you like.

INITIAL-INPUT has nothing, a priori, to do with
completion, hence with COLLECTION or with
REQUIRE-MATCH.

Read the doc.  Experiment.  Try to understand
how each arg can be used in different ways.