Empty lines in output?

[tomhoad]

I am fairly new to Golang, so I'm unsure if this is a problem with my code, Cobra, Promptui, or something else.

I have set up a minimal repro below, using jsonplaceholder's posts endpoint. Every time I run the following command, I seem to get a different output with random lines missing.

Windows 10, Powershell, Windows Terminal.

type Post struct {
    UserId int
    Id     int
    Title  string
    Body   string
}

var posts []Post
var postTitles []string

res, err := http.Get("https://jsonplaceholder.typicode.com/posts")

if err != nil {
    log.Fatalln(err)
}

defer res.Body.Close()

responseData, err := io.ReadAll(res.Body)

if err != nil {
    log.Fatalln(err)
}

err = json.Unmarshal(responseData, &posts)

if err != nil {
    fmt.Println("error:", err)
}

for _, post := range posts {
    postTitles = append(postTitles, post.Title)
}

prompt := promptui.Select{
    Label: "Select Division",
    Items: postTitles,
}

i, _, err := prompt.Run()

if err != nil {
    fmt.Printf("Prompt failed %v\n", err)
    return
}

fmt.Printf("Title: %q\n", posts[i].Title)
fmt.Printf("Body: %q\n", posts[i].Body)

Output on the command line:

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit
Title: "sunt aut facere repellat provident occaecati excepturi optio reprehenderit"
Body: "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"

===

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit

Body: "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"

===

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit
Title: "sunt aut facere repellat provident occaecati excepturi optio reprehenderit"
Body: "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"

===

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit
Title: "sunt aut facere repellat provident occaecati excepturi optio reprehenderit"
Body: "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"

===

C:\Users\hoadt\Development\cobrademo> go run main.go divisions
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit

===

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit
Title: "sunt aut facere repellat provident occaecati excepturi optio reprehenderit"
Body: "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"

===

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit

===

C:\Users\hoadt\Development\cobrademo> go run main.go testcommand
v sunt aut facere repellat provident occaecati excepturi optio reprehenderit
Title: "sunt aut facere repellat provident occaecati excepturi optio reprehenderit"
Body: "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"