https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276250
Bug ID: 276250
Summary: Backspace issue related to PS1 special variable
containing \n formatting sequence
Product: Base System
Version: 14.0-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: b...@freebsd.org
Reporter: white-p...@pm.me
The non-printing character \n in a formatting sequence for PS1 only works as
expected at the beginning of a formatting sequence. If placed anywhere else,
then the backspace key behaves erratically.
For instance:
1) The following sequence works as expected with no backspace issues:
export PS1="\[\n\]\h:\w \$ "
2) The following one reveals an issue with the backspace behavior:
export PS1="\[\n\]\h:\w \[\n\]\$ "
This has been observed at the console level.
No X-Windows is running, thus no graphical terminals are involved.
$ echo $TERM
xterm-256color
$ stty
speed 9600 baud;
lflags: echoe echoke echoctl
iflags: -iutf8
oflags: tab0
cflags: cs8 -parenb
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