[PLUG] urxvt: long prompt shifts, doesn't wrap

[Rich Shepard]

Two hosts running Slackware-14.2 with xfce4. The monitor on one is a wide
screen, 1600x900 dpi resolution. The monitor on the other is a square
screen, 1250x1024 dpi resolution.

Virtual terminals on both hosts use urxvt. On the wide monitor when I'm
several subdirectories down or there's a long command line, the text
following the shell prompt wraps. On the square monitor the text following
the shell prompt doesn't wrap but shifts left out of view with the first
visible character a '>'.

The xfce4 window manager setting have nothing relevant.

'man urxvt' doesn't seem to have an applicable option to control this
behavior. The jump scroll and skip scroll refer to vertical scrolling of
window content, not command lines.

My vt command line is: /usr/bin/urxvt -bg \#0b293b -fg lightgrey -sb -cr yellow
  -pr yellow -fn  10x20  -geometry 75x25 -ls -si -sk -sw -sr -sl 1024 -n urxvt
(wrapped for this message only).

I'd like suggestions where I might find insights on setting the windows on
the square screen to wrap rather than scroll.

TIA,

Rich