Fixing the flag issue (#5447)

* Fixing the flag issue

* whoops, forgot the original point of the function

* Update deparse.rs

* Update deparse.rs

* Update deparse.rs

* maybe this might work

* fmt

* quotation marks works now due to a rigorous check for args.

* fmt and clippy

* kept the original escape_quote_string(), escaped " and \

* removed script.nu

* Added appropriate comments.

src/main.rs

@@ -17,7 +17,7 @@ use nu_cli::{
 };
 use nu_command::{create_default_context, BufferedReader};
 use nu_engine::{get_full_help, CallExt};
-use nu_parser::{escape_quote_string, parse};
+use nu_parser::{escape_quote_string, escape_quote_string_with_file, parse};
 use nu_protocol::{
     ast::{Call, Expr, Expression},
     engine::{Command, EngineState, Stack, StateWorkingSet},
@@ -82,7 +82,7 @@ fn main() -> Result<()> {
     let mut args = std::env::args().skip(1);
     while let Some(arg) = args.next() {
         if !script_name.is_empty() {
-            args_to_script.push(escape_quote_string(&arg));
+            args_to_script.push(escape_quote_string_with_file(&arg, &script_name));
         } else if arg.starts_with('-') {
             // Cool, it's a flag
             let flag_value = match arg.as_ref() {