Confusing confirmation behavior when running opam in dumb terminals #6828
Description
Confirmation behavior is surprising in dumb terminals, like Emacs' M-x shell (where the environment variable TERM is set to dumb).
For instance, if I do opam remove yojson, I get the confirmation:
$ opam remove yojson
The following actions will be performed:
=== remove 4 packages
⊘ js_of_ocaml-compiler 6.2.0 [uses yojson]
⊘ merlin 5.5-503 [uses yojson]
⊘ ppx_yojson_conv_lib v0.17.0 [uses yojson]
⊘ yojson 3.0.0
=== recompile 3 packages
↻ lambda-term 3.3.2 [uses logs]
↻ logs 0.9.0 [uses js_of_ocaml-compiler]
↻ utop 2.16.0 [uses logs]
Proceed with ⊘ 4 removals and ↻ 3 recompilations? [Y/n]
now, I do n followed by enter. At this point, nothing happens. If I press enter again, it is interpreted as y, yes.
Screencast.From.2025-12-05.16-07-33.mp4
It seems like if TERM=dumb, opam should revert to some more... dumb input method.