Be able to specify output for forms

[connorszczepaniak-wk]

Running a form always outputs the UI to stdout: https://github.com/charmbracelet/huh/blob/main/form.go#L560

This is problematic if a program ultimately produces some output to stdout that the user wants to redirect into a file or pipe into another program.

It would be awesome if there was a way exposed to change this to Stderr, or maybe it should just default to stderr like the spinner does: https://github.com/charmbracelet/huh/blob/main/spinner/spinner.go#L144

[meowgorithm]

Hi! There's actually support for this on main in the form of Form.WithProgamOptions:

err := huh.NewForm(/* ... */).
	WithProgramOptions(tea.WithOutput(os.Stderr)).
	Run()

That said, we may want to smooth the API out a little into something slightly more high level (i.e. Form.WithOutput()).

[survivorbat]

Hi! There's actually support for this on main in the form of Form.WithProgamOptions:

err := huh.NewForm(/* ... */).
	WithProgramOptions(tea.WithOutput(os.Stderr)).
	Run()

That said, we may want to smooth the API out a little into something slightly more high level (i.e. Form.WithOutput()).

Would appreciate something like that as well, thank you for providing the answer :)

[shakefu]

@meowgorithm Is there an ETA on a new cut of a release from main for this? We are blocked on this feature, primarily because there's no way to make a Form work correctly when invoked with tea.NewProgram(...) directly due to the submitCmd being private (and only being set via Form.Run()) - https://github.com/charmbracelet/huh/blob/main/form.go#L549

Our use case is using huh with a Kong as a CLI wrapper, and Kong can provide its own Stdin/Stdout buffers, but obviously they are entirely disconnected from what huh.Form does.

[testinfected]

@meowgorithm It would be nice to direct the output of accessible mode to the specified output. Currently accessible forms use fmt.Println() always sending to stdout. With something like Form.WithOutput() we would could use the output in accessible code with fmt.Fprintln(out, ...)

What do you think?

[maaslalani]

Hey! Just added a WithOutput for TUI mode in #201 and will later propagate it to accessible mode!

[testinfected]

Great! Thanks

[meowgorithm]

@shakefu:

@meowgorithm Is there an ETA on a new cut of a release from main for this?

We expect to cut a release soon, but in the mean time it's totally reasonable to pin to main;

go get github.com/charmbracelet/huh@main

[maaslalani]

Closing this as we added WithOutput and will cut a new release ASAP!