Yes, sorry about that. I missed an error when retrieving the patch from the email. This altered the patch so that one of the hunks didn't succeed (I missed an initial space off the bottom comment line of the patch).
I've corrected the patch on my end and done some more testing. Configured, patched, compiled and installed.
---- text ----
shell1$ emacs -Q
M-x server-mode
Starts as per normal, window stays up.
shell2$ emacsclient -t GNUmakefile
This opens a text window with the contents of GNUmakefile.
C-x C-v INSTALL
INSTALL now opens in the buffer, and I can use it as normal. Trying to
shut the client down with C-x # results in the message
"No server buffers remain to edit"
(not client buffers as you said will happen) so I just did C-x 5 0 to terminate the client.
---- GUI ----
Starting up a GUI client with emacsclient -c GNUmakefile shows that file in the window.
C-x C-v INSTALL
then shows the install file, and crucially, the terminal doesn't return to the shell prompt. I still see "Waiting for Emacs..." in the terminal until I exit the client window.
At least on my end, this appears to work as advertised.
Regards, brickviking