Delete key with empty line makes Readline to return EOF

[hallazzang]

Steps to reproduce problem:

1. Input aaa
2. Press ^A(Ctrl+A) to move cursor to the beginning of the line
3. Press Delete key 4 times

Here's the code I used:

package main

import (
    "fmt"

    "github.com/chzyer/readline"
)

func main() {
    rl, err := readline.New("> ")
    if err != nil {
        panic(err)
    }
    defer rl.Close()

    for {
        line, err := rl.Readline()
        if err != nil {
            break
        }
        println(line)
    }
}

[BunnyBrewery]

Did you use ctrl + d to deleter characters?

https://github.com/chzyer/readline/blob/master/readline.go#L119-L123

if c.EOFPrompt == "" {
    c.EOFPrompt = "^D"
} else if c.EOFPrompt == "\n" {
    c.EOFPrompt = ""
}

As you can see, if you don't EOFPrompt field in Config structure, it will default to ^D

By the way, if you don't like how it reaches EOF with ^D, the following could be a fix:

for {
    line, err := rl.Readline()
    if err != nil {
                if err == io.EOF {
                        continue
                }
        break
    }
    println(line)
}

[jzyinq]

@hallazzang @BunnyBrewery I have the same issue and handling io.EOF solve it partially.

In my case delete key causes the same behavior as ctrl+d.

I tried to change c.EOFPrompt through config but it didn't work. Did you found any other solution?