Prompt display in Panther build

[Matt Tenenbaum <matt@tty1.org>]

Yesterday I installed OS X 10.3, which (not surprisingly) broke my 
emacs binary (21.1, I believe, from about a year ago). So yesterday I 
also pulled the latest source from CVS and bootstrapped it into 
existence on the new operating system. Things seem to work 
(functionally) fine with the following possible exception:

When I run 'sql-postgres' to start the interactive SQL mode (to connect 
to a local pgsql server) the behavior differs between the command line 
invocation and the Carbon build. In particular, on the command line, 
everything is (or seems) as it is supposed to be; on the Carbon build, 
there is no prompt. If I enter commands (despite the lack of prompt) 
everything behaves normally (it transforms the text to boldface and 
writes the query results, as usual), but I still don't get any prompt 
showing up.

Initially I thought this might be related to the problems that seem to 
exist with subprocess responses on the terminal, but the problem isn't 
in the terminal nor does it seem to be with the _responses_ to 
commands, so I don't so much think that anymore.

Anybody have any ideas, what might be causing this? Could it be a 
problem with the sql.el in CVS? It is especially strange to me that it 
is different between invocation-types. Any help is greatly appreciated.

Thanks,
-mt