modd escaping values in terminal (configuration struct)

[brenol]

@brenol commented on Mon Mar 28 2016

Hello!

I have a JSON that is shown in the terminal with MarshalIndent and it's not looking good with modd, because of escaping. It's shown because its application configuration, for instance:

{\n\t\t\"Host\": \"http://localhost:8086\",\n\t\t\"Username\": \"user\",\n\t\t\"Password\": \"user\",\n\t\t\"BatchSize\": 1000\n\t}\n}"

I looked at the cli --help and I did not find any solution: Is there any way to disable escaping nowadays?

Thanks!

[cortesi]

Hey there. This sounds like an issue that's been fixed in master - could you please confirm that you still see this with a current checkout?

[brenol]

Hi @cortesi!

Just looked at the issue and it seems to be only happening with the logrus library. Its because it's not identifying moddas a terminal:

package logrus

import (
    "os"

    "golang.org/x/sys/unix"
)

// IsTerminal returns true if the given file descriptor is a terminal.
func IsTerminal() bool {
    _, err := unix.IoctlGetTermios(int(os.Stdout.Fd()), unix.TCGETA)
    return err == nil
}

Is this a expected behavior? (i.e. modd not be identified as a valid terminal)

Thanks!

[cortesi]

Ah, this clarifies things. I looked at ways of pretending to be a terminal to invoked processes, and it turns out it's not possible without a lot of fragile machinery and portability paraphernalia. Most pieces of software give you some way to over-ride the terminal detection - a quick read of the logrus code seems to show that ForceColor might do what you want (despite the fact that the escaped values here are not ANSI colour codes).