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No CRs in :! command output from vim in rxvt

When I run vim in an rxvt terminal, and I execute a shell command
such as


there are no carriage returns in the output, only line feeds at the
ends of the lines, so the lines stair-step across the terminal

This has been a problem for as long as I've been using vim on
Cygwin.  The problem is in vim 7.2.148 I compiled myself on Cygwin
1.5, and in the official vim 7.2.264 package just released for
Cygwin 1.7.  On 1.5 I'm using rxvt package version 20050409-11 and
on 1.7 I'm using rxvt 20050409-21.

Using my Cygwin 1.7 system, the output from stty -a is:

    :!stty -a
    speed 38400 baud; rows 24; columns 80; line = 0;
    intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
    eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R;
    werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0;
    -parenb -parodd cs8 -hupcl -cstopb cread -clocal -crtscts
    -ignbrk brkint ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff
    -iuclc -ixany imaxbel
    opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
    isig icanon iexten echo echoe echok -echonl -noflsh -tostop echoctl echoke
where I've cleaned up the missing CR problem for clarity.  I would
think that the 'onlcr' setting would cause the output to include CRs
at the end of each line, but it doesn't.  I also tried setting
'onlret' before running vim, but it doesn't seem to have any effect,

I've captured the output of the ":!ls" command by running script
before starting vim and I can see that each line ends with a newline
and no carriage return.

This looks to me like a problem with rxvt rather than with vim, but
I'm not sure.  In any case, does anyone know of a solution, other
than piping all such commands through u2d?  Thanks.


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