Bug#200857: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=200857

[dickey@herndon4.his.com (Thomas Dickey)]

>                       Debian Bug report logs - #200857
>                 xterm fails to honour dtterm sequence ESC[21t
...

>I think it might be better to do something like this [see patch]:
>The iscntrl() test can be replaced easily if more/less paranoia is
>required - it's not really fair to expect apps to figure out the
>escape sequence is just gone, as afaict there's no way to ask if
>a term supports many of them other than checking TERM and going by
>what you know/expect that terminal to support.

not exactly - the label doesn't have control characters - see this chunk
in misc.c:

	default:
	    if (ansi_table[CharOf(*cp)] != CASE_PRINT)
		return;
	}

The complaint is that someone could be misled into pressing return after
a bogus title was sent to the host, e.g., as part of cat'ing a core-dump
to the terminal.  (Why anyone would want to do this is another story).
Or doing tail -f on a so-called logfile (no different ;-).

This is in patch #174 (would allow someone to use these features if they're
inclined to read the manpage):

       allowWindowOps (class AllowWindowOps)
               Specifies   whether   extended   window    control
               sequences  (as  used  in  dtterm)  for  should  be
               allowed.
-- 
Thomas E. Dickey <dickey@invisible-island.net>
http://invisible-island.net
ftp://invisible-island.net