Control LSP server from Bash

bash-control-lsp.sh

#!/usr/bin/env bash

send()
{
    local length=${#1}
    printf "Content-Length: $length\r\n" >pipe
    printf '\r\n' >pipe
    printf ${1//\\/\\\\} >pipe
}

rm -rf pipe
mkfifo pipe
language-server <pipe &
exec 3>pipe

# initialize
send '{"jsonrpc":"2.0","id":0,"method":"initialize","params":{...}}'
sleep 1

# initialized
send '{"jsonrpc":"2.0","method":"initialized","params":{}}'
sleep 1

# ...

exec 3>&-