An install that reports nothing is indistinguishable from one that failed
silently, which is the one thing this loop cannot afford: the whole promise is
that the running program now has the body you just wrote.
The names come from the reply rather than from what was typed, because the
daemon is the one that knows which of them it installed — a `defvar' the
program already had is not among them, and the reply already says so with
`:note'. That case now reads "nothing to install" instead of quoting a
build time for a build that did not happen. `:fns` and `:names' are reported
separately for the same reason: a buffer of five functions and two vars
should not report as five of anything.
A long list is counted and then sampled rather than truncated, since an echo
area cut off in the middle of the tenth name tells you neither how many there
were nor which.
And the region that was sent is flashed, which answers a question the echo
area cannot: `beginning-of-defun' may well have found a different form from
the one you thought point was in.
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