fix r being injected into external editors under dosemu

14 jobs for !39 with xtrndosemur in 29 minutes and 16 seconds (queued for 21 seconds)
latest detached
Status Job ID Name Coverage
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passed #3998
FreeBSD
jsdoor-freebsd

00:05:22

passed #3999
Linux
jsdoor-linux

00:05:57

passed #4001
FreeBSD
jsdoor-windows

00:03:35

passed #3993
FreeBSD
sbbs-freebsd

00:06:33

passed #3988
Linux
sbbs-linux

00:07:52

passed #3991
Windows
sbbs-windows

00:06:00

passed #4000
FreeBSD
sexpots-freebsd

00:00:10

passed #3989
Linux
sexpots-linux

00:00:09

passed #3992
Windows
sexpots-windows

00:00:41

passed #3996
FreeBSD
syncdraw-freebsd

00:00:21

passed #3997
Linux
syncdraw-linux

00:00:25

passed #3994
FreeBSD
syncterm-freebsd

00:01:12

passed #3990
Linux
syncterm-linux

00:02:04

passed #3995
FreeBSD
syncterm-windows

00:02:23