pgindent messing up "translator: " comments

I just noticed that this comment got reindented by pgindent
(xlog.c, line 3226 in REL9_1_STABLE):
/*
* translator: First %s represents a recovery.conf parameter name like
* "recovery_end_command", and the 2nd is the value of that parameter.
*/
ereport((signaled && failOnSignal) ? FATAL : WARNING,
(errmsg("%s \"%s\": return code %d", commandName,
command, rc)));

Sure enough, the resulting POT entry does not have the necessary
comment:

#: /pgsql/source/REL9_1_STABLE/src/backend/access/transam/xlog.c:3230
#, c-format
msgid "%s \"%s\": return code %d"
msgstr ""

I think the proper fix would be to use the /*---- trick, such as in
postmaster.c:

/*------
translator: %s is a noun phrase describing a child process, such as
"server process" */
(errmsg("%s (PID %d) exited with exit code %d",
procname, pid, WEXITSTATUS(exitstatus))));

It seems to me that we should alert if pgindent does anything to a
comment line containing "translator:".

--
Álvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>