lines()

[zouhair]

lines() {
    # Usage: lines "file"
    mapfile -tn 0 lines <<<"$1"
   # instead of < "$1"
    printf '%s\n' "${#lines[@]}"
}

[dylan]

Could I have some more information? Possible a rationale for this snippet?

[zouhair]

Forget about it, I am dumb