NonInteractiveCliktConsole only reads in the first line from an input file

Currently the NonInteractiveCliktConsole only reads in the first line of any input file passed as the input stream.

This can be fixed by caching the buffered reader like I have below.

class NonInteractiveCliktConsole : CliktConsole {
    private val bufferedReader by lazy {
        System.`in`.bufferedReader()
    }

    override fun promptForLine(prompt: String, hideInput: Boolean) = try {
        print(prompt, false)
        bufferedReader.readLine()
    } catch (err: IOException) {
        null
    }

    override fun print(text: String, error: Boolean) {
        if (error) {
            System.err
        } else {
            System.out
        }.print(text)
    }

    override val lineSeparator: String get() = System.lineSeparator()
}

I’m using version 1.5.0.

[ajalt]

Thanks for the reports! This is fixed in 4425fe2, which is part of the 2.0.0 release.

[grote]

Yeah I just ran the tests myself in the hope of finding the issue, but they passed for me, even when using stdin.provideText("test\ntest\n") instead of the line joining.

When modifying one of the samples to use the code above, I could reproduce the problem though by running:

echo "test
test
" | ./runsample prompt

or

echo "test\ntest\n" | ./runsample prompt

Before thinking about how to add a test here, maybe let’s see if you can reproduce the problem.