http://invisible-island.net/vttest/
Copyright © 2013-2014,2018 by Thomas E. Dickey

VTTEST – Examples of VT100/non-VT100 wrapping

VT100-like

XTerm

Here is an example using color which I may expand into a similar comparison.
For now, black/white is enough for a demonstration.

FreeBSD

Linux

The wrapping works, but there is a different problem.
It seems that the scrolling margins (or origin mode) require some attention.

NetBSD

Note the similarity to Linux console.

kterm

KTerm is a fork from X Consortium xterm.

mlterm

Mlterm is developed independently of xterm.

st-0.4

This has the same issue as Linux console.
However, it is still in its early stages of development, and may yet be fixed.

Not VT100

See the XTerm FAQ for additional comments about line-wrapping.

OpenBSD

Oddly enough (OpenBSD started from the same source as NetBSD), the test fails.

KDE Konsole

Konsole differs from VTE; it behaves like PuTTY.
PuTTY appears to have been developed earlier than Konsole;
in turn it was originally influenced by SCO consoles.

PuTTY (pterm)

VTE

There are several programs (actually "skins") using the VTE widget.
Here are some examples from my Debian/testing or Fedora machines.
Since all of the terminal emulation is done in VTE, there is little difference in the essentials.

Considering timeframe and similarities, it is likely that VTE's behavior was copied from rxvt.

• GNOME

  

• LXTerminal

  

• ROXTerm

  

• Terminator

  

• Xfce4-Terminal

  

rxvt

Old and new versions of rxvt behave the same; its divergence from VT100 is old and well-established.

Mixed...

Some programs (call them terminal multiplexers, or whatever—categorizing mosh is awkward), run inside a terminal emulator to enhance its capabilities.

The figures illustrate the point that these programs are not true terminal emulators, since they do not perform enough of the required functionality.

I have provided illustrations with VTE and xterm, to show the differences.

mosh

This shows mosh running in VTE.
See that mosh does not alter the VTE behavior.

This shows mosh running in xterm.
See that mosh does not alter the XTerm behavior.

screen

This shows screen running in VTE.
Compare with VTE, and note similarity and difference.
Compare with rxvt and note similarities.

This shows screen running in xterm.
Compare with VTE, and note differences.

tmux

This shows tmux running in VTE.

This shows tmux running in xterm.