不能在go代码中调用`vim`

Question

I try to call vim within go program, which code similar to this:

package main

import (
        "fmt"
        "os"
        "os/exec"
)

func main() {
        err := exec.Command("vim", "a.txt").Run()
        if err != nil {
                fmt.Println(err)
        }
        os.Exit(0)
}

I ran go run mycode.go then got:

exit status 1

I have tried several ways to succeed this e.g. replace Run() by Start(), Output(), ..., but it seems not work. Finally, What I try to do is I try to call vim and stop my current go program. I just want to see vim appear, that's all.

Answer 1

In order for vim to render its interface, you need to attach the standard input/output streams to the process:

package main

import (
        "fmt"
        "os"
        "os/exec"
)

func main() {
        cmd := exec.Command("vim", "a.txt")
        cmd.Stdin = os.Stdin
        cmd.Stdout = os.Stdout
        cmd.Stderr = os.Stderr
        err := cmd.Run()
        if err != nil {
                fmt.Println(err)
        }
        os.Exit(0)
}

Not attaching the streams is similar to running the following command from your shell:

vim < /dev/null > /dev/null 2> /dev/null