Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add missing static keywords to talk(1)

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

ANSIfy function prototypes. While I am there, constify some parameters and
make use of C99 sparse initialization for static variables, this makes talk(1)
to compile cleanly with WARNS=6.

Handle window resizing better.

Submitted by: Cyril Nguyen Huu
Obtained from: OpenBSD

WARNS=2 fixes with NO_WERROR set because of system-header originating
warnings. Use __FBSDID().

Include missing header files which define functions for which gcc has
builtints (e.g., exit, strcmp).

talk depended on side effects of curses includes.

$Id$ -> $FreeBSD$

Add rcsid. Remove unused #includes (what about RU# ?). Change exit(-1) and
add usage().

Enable idlok() in both windows. This is actually a no-op for libcurses
(which doesn't use the setting at all), but when linking with
recent versions of libncurses, ncurses screws up without it for some reason
(presumably a ncurses bug).

If running under a typical sysv-style curses, including ncurses, use
hline() to draw the window split rather than fudging it with dashes.
This causes the line to be drawn in line-draw characters if the terminal
description has them.

Suggested by: ache

Update some ancient warts in talk:
- use termios, not sgtty
- dont use _putchar(), that was a BSD-curses specific feature not in
other curses packages (such as ncurses)
- use sigaction, not sigvec while I'm there
- box() does different things under sysv/ncurses on 1-line high windows,
and BSD-curses doesn't have hline(), so do it by adding characters
instead. That works on both styles of curses.

Make talk automagically find out the interface IP address where the
remote peer will be connected through. This avoids the ``Checking for
invitation on caller's machine'' problem for multi-homed hosts.

Thanks to: Garrett, for his `find_interface' example

Remove trailing whitespace.

Add check for writeable terminal
Submitted by: mark@grondar.za (and slightly modified)

Make talk ctype-aware, handle controns as tcsh does, use human-oriented
scroll, most of changes from 1.x

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite Usr.bin Sources