Issue when using emacs eshell ($TERM dumb)

[babusri]

Environment

• OS: MacOS
• age version: Built from source

What were you trying to do

In an emacs eshell, I typed

./age -p LICENSE > out.age

What happened

There was no prompt for password. No errors.
When I opened out.age, it reads
Error: refusing to output binary to the terminal.
Did you mean to use -a/--armor? Force with "-o -".
[ Did age not do what you expected? Could an error be more useful? Tell us: https://filippo.io/age/report ]

echo $TERM
dumb

Note: emacs has 2 shells.
ESC-x shell and ESC-x eshell

I don't see this problem on shell, only on eshell, if that helps.

<insert terminal transcript here>

[benjojo]

This would be a issue in: https://godoc.org/golang.org/x/crypto/ssh/terminal#IsTerminal I strongly suspect

[polynomialspace]

It looks like IsTerminal reports correctly; tty(1) reports not a tty from emacs' eshell.

eshell does not "communicate with a terminal like most command shells", other commands that depend on tty functions may also fail but some workarounds have been made.

Additionally, redirection via > in eshell behaves differently, which is what's causing the error to be written to the file.