Thanks. This seems like a function that could easily live in a third party library. The standard library doesn't have any package or set of functions for interactive I/O. https://golang.org/doc/faq#x_in_std

(Note that your suggested implementation is not safe, as the buffered os.Stdin may read additional characters past the newline, and those characters will be lost when the function returns.)

Thank you very much for your response. Im already working on a module with the fixes (I hope).

Closing as declined.

@davecheney To be clear I didn't mean my comment to decline the proposal entirely. I was raising an objection. If @dotoscat wants to respond we can reopen this.

My mistake, I interpreted #40194 (comment) as @dotoscat had moved on to implementing this in their own package.

After some tries with Scan, Scanf and Scanln I come to the conclussion to use reader := bufio.NewReader(os.Stdin) as a global.

Something like this

var bufferedStdin *bufio.Reader = bufio.NewReader(os.Stdin)

which works if os.Stdin is the output from another program and is harmless if os.Stdin is a tty.

cat TODO | ./input

So the implementation of input would be

func input(prompt string) (string, error) {
	fmt.Print(prompt)
	response, err := bufferedStdin.ReadString('\n')
	trimmedResponse := strings.TrimRight(response, "\n")
	return trimmedResponse, err
}

And excuse me for this, there is a problem that happens with string.TrimRight though

func main() {
	fruit, _ := input("Favorite fruit? ")
	things, _ := input("Favorite things? ")
	number, _ := input("Favorite number? ")
	fmt.Println(fruit)
	fmt.Println(things)
	fmt.Println(number)

	fmt.Println("Your favorite things", fruit, things, number) //here

	fmt.Println("END")
}

Get-Content stuff.txt | ./input (I'm using Windows 10)

The output is

false
Favorite fruit? Favorite things? Favorite number? apple
pretty things
7
 7retty thingsthings apple  <----
END

The output is being stepped on, which don't happen without strings.TrimRight or any other strings functions

I attach the files for the reproducible example.

goinput.zip

@dotoscat Do you still want to propose a change to the standard library?

Reopened.

Please do consider https://golang.org/doc/faq#x_in_std . Why does the proposed function belong in the standard library? Thanks.

After thinking about it carefully I don't see any reason to the proposed function be part of the standard library. Thank you for your attention.