check for EOF when asking questions

when invoking Ouch from shell scripts, it is likely that questions will
be left unanswered with EOF, this commit fixes Ouch interpreting EOF as
Yes in Y/N questions

src/utils/question.rs

@@ -14,7 +14,7 @@ use fs_err as fs;
 use super::{strip_cur_dir, to_utf};
 use crate::{
     accessible::is_running_in_accessible_mode,
-    error::{Error, Result},
+    error::{Error, FinalError, Result},
     utils::{self, colors},
 };
 
@@ -145,7 +145,17 @@ impl<'a> Confirmation<'a> {
             io::stdout().flush()?;
 
             let mut answer = String::new();
-            io::stdin().read_line(&mut answer)?;
+            let bytes_read = io::stdin().read_line(&mut answer)?;
+
+            if bytes_read == 0 {
+                let error = FinalError::with_title("Unexpected EOF when asking question.")
+                    .detail("When asking the user:")
+                    .detail(format!("  \"{message}\""))
+                    .detail("Expected 'y' or 'n' as answer, but found EOF instead.")
+                    .hint("If using Ouch in scripting, consider using `--yes` and `--no`.");
+
+                return Err(error.into());
+            }
 
             answer.make_ascii_lowercase();
             match answer.trim() {

tests/utils.rs

@@ -9,6 +9,7 @@ macro_rules! ouch {
     ($($e:expr),*) => {
         $crate::utils::cargo_bin()
             $(.arg($e))*
+            .arg("--yes")
             .unwrap();
     }
 }