https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201167
Bug ID: 201167
Summary: units(1) corrupts terminal when run via $()
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: freebsd-bugs@FreeBSD.org
Reporter: j...@freebsd.org
Consider this from today's current:
-----
$ units -t ft in
12
$ echo "$(units -t ft in)"
12
$
-----
When running 'units' from within $(), the terminal becomes unusable; note the
staircas effect after the second invocation. Carriage returns do not work any
longer, nor do control characters such as Ctrl+D. "reset" fixes the carriage
return issue, but not everything: for example, backspace cannot work any
longer.
I have tried this from both the "physical console" (in VMware), a remote
session from OS X's Terminal.app, and from within tmux from such remote
session. (Do not try on the physical console; getty gets confused once you log
out.)
I somehow doubt this is a units(1) issue and suspect the problem is coming from
libedit, but I'm filing this as a units(1) issue because that's how the problem
can be reproduced.
(As a related issue, "units -t" should not need to initialize libedit at all --
but it's doing it. Removing that code path "hides" the problem.)
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