bed/io/writer/record: Add other field writer

noodles-bed/src/io/writer/record.rs

@@ -1,12 +1,13 @@
 mod feature_end;
 mod feature_start;
+mod other_fields;
 mod reference_sequence_name;
 
 use std::io::{self, Write};
 
 use self::{
     feature_end::write_feature_end, feature_start::write_feature_start,
-    reference_sequence_name::write_reference_sequence_name,
+    other_fields::write_other_fields, reference_sequence_name::write_reference_sequence_name,
 };
 use crate::Record;
 
@@ -25,6 +26,8 @@ where
     let feature_end = record.feature_end()?;
     write_feature_end(writer, feature_end)?;
 
+    write_other_fields(writer, record.other_fields())?;
+
     write_newline(writer)?;
 
     Ok(())

noodles-bed/src/io/writer/record/other_fields.rs

@@ -0,0 +1,16 @@
+use std::io::{self, Write};
+
+use super::write_separator;
+use crate::record::OtherFields;
+
+pub(super) fn write_other_fields<W>(writer: &mut W, other_fields: OtherFields<'_>) -> io::Result<()>
+where
+    W: Write,
+{
+    for field in other_fields.iter() {
+        write_separator(writer)?;
+        writer.write_all(field)?;
+    }
+
+    Ok(())
+}