Recent TTYDEF_LFLAG default change

[Poul-Henning Kamp]

In message <20041103111157.GA12950 at nagual.pp.ru>, Andrey Chernov writes:
>TTYDEF_LFLAG have ECHO* in it for years, and it is user-visible, some 
>programs may use it (see recent stty/key.c hacking).
>
>Why it was needed to remove ECHO* from here just to make yet one 
>non-standard, non cross-BSD compatible and unknown TTYDEF_LFLAG_ECHO?

Because if you open a serial port and it defaults to echo, you may end up in
an "echo-war" with the other end before you ever get a chance to call
ioctl and disable echoing.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.