added eof error since read does not raise errors for it

src/main.zig

@@ -65,5 +65,12 @@ pub fn main() !void {
     defer thread_manager.deinit();
 
     var f = std.io.getStdIn();
-    try input.main_loop(f, buffs, &thread_manager, std.heap.page_allocator);
+    input.main_loop(f, buffs, &thread_manager, std.heap.page_allocator) catch |err| {
+        switch (err) {
+            util.Errors.EOFError => {
+                return;
+            },
+            else => return err,
+        }
+    };
 }

src/util.zig

@@ -1,5 +1,9 @@
 const std = @import("std");
 
+pub const Errors = error{
+    EOFError,
+};
+
 pub const Options = struct {
     width: usize,
     height: usize,