diff --git a/src/metadata/file.rs b/src/metadata/file.rs
index 13693736..96fdc121 100644
--- a/src/metadata/file.rs
+++ b/src/metadata/file.rs
@@ -7,11 +7,11 @@ use super::{
         MessageContent, emit_message_contents, parse_message_contents_yaml,
         validate_message_contents,
     },
+    yaml::{EmitYaml, YamlEmitter},
     yaml::{
         YamlObjectType, as_string_node, get_required_string_value, get_string_value,
         parse_condition,
     },
-    yaml_emit::{EmitYaml, YamlEmitter},
 };
 
 /// Represents a file in a game's Data folder, including files in
diff --git a/src/metadata/group.rs b/src/metadata/group.rs
index f976e71d..4779fa37 100644
--- a/src/metadata/group.rs
+++ b/src/metadata/group.rs
@@ -1,10 +1,10 @@
 use saphyr::MarkedYaml;
 
 use super::error::ParseMetadataError;
+use super::yaml::{EmitYaml, YamlEmitter};
 use super::yaml::{
     YamlObjectType, get_as_hash, get_required_string_value, get_string_value, get_strings_vec_value,
 };
-use super::yaml_emit::{EmitYaml, YamlEmitter};
 
 /// Represents a group to which plugin metadata objects can belong.
 #[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
@@ -104,10 +104,6 @@ impl TryFrom<&MarkedYaml> for Group {
 }
 
 impl EmitYaml for Group {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         emitter.begin_map();
 
diff --git a/src/metadata/location.rs b/src/metadata/location.rs
index ae7eb639..33d56886 100644
--- a/src/metadata/location.rs
+++ b/src/metadata/location.rs
@@ -3,9 +3,9 @@ use saphyr::{MarkedYaml, YamlData};
 use super::error::ExpectedType;
 use super::error::ParseMetadataError;
 
+use super::yaml::EmitYaml;
+use super::yaml::YamlEmitter;
 use super::yaml::{YamlObjectType, get_required_string_value};
-use super::yaml_emit::EmitYaml;
-use super::yaml_emit::YamlEmitter;
 
 /// Represents a URL at which the parent plugin can be found.
 #[derive(Clone, Debug, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
diff --git a/src/metadata/message.rs b/src/metadata/message.rs
index b146107d..1b463495 100644
--- a/src/metadata/message.rs
+++ b/src/metadata/message.rs
@@ -10,11 +10,11 @@ use super::{
         ExpectedType, MetadataParsingErrorReason, MultilingualMessageContentsError,
         ParseMetadataError,
     },
+    yaml::{EmitYaml, YamlEmitter},
     yaml::{
         YamlObjectType, as_string_node, get_as_hash, get_required_string_value,
         get_strings_vec_value, parse_condition,
     },
-    yaml_emit::{EmitYaml, YamlEmitter},
 };
 
 /// Codes used to indicate the type of a message.
@@ -388,10 +388,6 @@ impl TryFrom<&MarkedYaml> for Message {
 }
 
 impl EmitYaml for MessageContent {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         emitter.begin_map();
 
@@ -425,10 +421,6 @@ pub(super) fn emit_message_contents(
 }
 
 impl EmitYaml for Message {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         emitter.begin_map();
 
diff --git a/src/metadata/metadata_document.rs b/src/metadata/metadata_document.rs
index dde340f0..861cb653 100644
--- a/src/metadata/metadata_document.rs
+++ b/src/metadata/metadata_document.rs
@@ -1,7 +1,6 @@
 use std::{
     collections::{HashMap, HashSet},
     path::Path,
-    sync::LazyLock,
 };
 
 use saphyr::{MarkedYaml, YamlData};
@@ -11,18 +10,15 @@ use crate::logging;
 use super::{
     error::{
         ExpectedType, LoadMetadataError, MetadataDocumentParsingError, ParseMetadataError,
-        RegexError, WriteMetadataError, YamlMergeKeyError,
+        RegexError, WriteMetadataError,
     },
     file::Filename,
     group::Group,
     message::Message,
     plugin_metadata::PluginMetadata,
-    yaml::{YamlObjectType, as_string_node, get_as_slice},
-    yaml_emit::{EmitYaml, YamlEmitter},
+    yaml::{EmitYaml, YamlEmitter, YamlObjectType, get_as_slice, process_merge_keys},
 };
 
-static MERGE_KEY: LazyLock<MarkedYaml> = LazyLock::new(|| as_string_node("<<"));
-
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct MetadataDocument {
     bash_tags: Vec<String>,
@@ -342,71 +338,6 @@ impl std::default::Default for MetadataDocument {
     }
 }
 
-fn process_merge_keys(mut yaml: MarkedYaml) -> Result<MarkedYaml, YamlMergeKeyError> {
-    match yaml.data {
-        YamlData::Array(a) => {
-            yaml.data = merge_array_elements(a).map(YamlData::Array)?;
-            Ok(yaml)
-        }
-        YamlData::Hash(h) => {
-            yaml.data = merge_hash_keys(h).map(YamlData::Hash)?;
-            Ok(yaml)
-        }
-        _ => Ok(yaml),
-    }
-}
-
-fn merge_array_elements(
-    array: saphyr::AnnotatedArray<MarkedYaml>,
-) -> Result<saphyr::AnnotatedArray<MarkedYaml>, YamlMergeKeyError> {
-    array.into_iter().map(process_merge_keys).collect()
-}
-
-fn merge_hash_keys(
-    hash: saphyr::AnnotatedHash<MarkedYaml>,
-) -> Result<saphyr::AnnotatedHash<MarkedYaml>, YamlMergeKeyError> {
-    let mut hash: saphyr::AnnotatedHash<MarkedYaml> = hash
-        .into_iter()
-        .map(|(key, value)| {
-            process_merge_keys(key)
-                .and_then(|key| process_merge_keys(value).map(|value| (key, value)))
-        })
-        .collect::<Result<_, _>>()?;
-
-    if let Some(value) = hash.remove(&MERGE_KEY) {
-        merge_into_hash(hash, value)
-    } else {
-        Ok(hash)
-    }
-}
-
-fn merge_into_hash(
-    hash: saphyr::AnnotatedHash<MarkedYaml>,
-    value: MarkedYaml,
-) -> Result<saphyr::AnnotatedHash<MarkedYaml>, YamlMergeKeyError> {
-    match value.data {
-        YamlData::<MarkedYaml>::Array(a) => a.into_iter().try_fold(hash, |acc, e| {
-            if let YamlData::Hash(h) = e.data {
-                Ok(merge_hashes(acc, h))
-            } else {
-                Err(YamlMergeKeyError::new(e))
-            }
-        }),
-        YamlData::<MarkedYaml>::Hash(h) => Ok(merge_hashes(hash, h)),
-        _ => Err(YamlMergeKeyError::new(value)),
-    }
-}
-
-fn merge_hashes(
-    mut hash1: saphyr::AnnotatedHash<MarkedYaml>,
-    hash2: saphyr::AnnotatedHash<MarkedYaml>,
-) -> saphyr::AnnotatedHash<MarkedYaml> {
-    for (key, value) in hash2 {
-        hash1.entry(key).or_insert(value);
-    }
-    hash1
-}
-
 fn replace_prelude(masterlist: String, prelude: String) -> String {
     let line_ending = detect_line_ending(&masterlist);
     if let Some((start, end)) = find_prelude_bounds(&masterlist) {
diff --git a/src/metadata/mod.rs b/src/metadata/mod.rs
index d430da2c..0bf39d25 100644
--- a/src/metadata/mod.rs
+++ b/src/metadata/mod.rs
@@ -9,7 +9,6 @@ mod plugin_cleaning_data;
 pub(crate) mod plugin_metadata;
 mod tag;
 mod yaml;
-mod yaml_emit;
 
 pub use file::{File, Filename};
 pub use group::Group;
@@ -20,8 +19,8 @@ pub use plugin_metadata::PluginMetadata;
 pub use tag::{Tag, TagSuggestion};
 
 #[cfg(test)]
-fn emit<T: yaml_emit::EmitYaml>(metadata: &T) -> String {
-    let mut emitter = yaml_emit::YamlEmitter::new();
+fn emit<T: yaml::EmitYaml>(metadata: &T) -> String {
+    let mut emitter = yaml::YamlEmitter::new();
     metadata.emit_yaml(&mut emitter);
 
     emitter.into_string()
diff --git a/src/metadata/plugin_cleaning_data.rs b/src/metadata/plugin_cleaning_data.rs
index 550a077e..2365e913 100644
--- a/src/metadata/plugin_cleaning_data.rs
+++ b/src/metadata/plugin_cleaning_data.rs
@@ -6,8 +6,8 @@ use super::{
         MessageContent, emit_message_contents, parse_message_contents_yaml,
         validate_message_contents,
     },
+    yaml::{EmitYaml, YamlEmitter},
     yaml::{YamlObjectType, as_string_node, get_as_hash, get_required_string_value, get_u32_value},
-    yaml_emit::{EmitYaml, YamlEmitter},
 };
 
 /// Represents data identifying the plugin under which it is stored as dirty or
@@ -181,10 +181,6 @@ impl TryFrom<&MarkedYaml> for PluginCleaningData {
 }
 
 impl EmitYaml for PluginCleaningData {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         emitter.begin_map();
 
diff --git a/src/metadata/plugin_metadata.rs b/src/metadata/plugin_metadata.rs
index 7eecd345..30c8cd99 100644
--- a/src/metadata/plugin_metadata.rs
+++ b/src/metadata/plugin_metadata.rs
@@ -12,10 +12,10 @@ use super::{
     message::Message,
     plugin_cleaning_data::PluginCleaningData,
     tag::Tag,
+    yaml::{EmitYaml, YamlEmitter},
     yaml::{
         YamlObjectType, get_as_hash, get_as_slice, get_required_string_value, get_string_value,
     },
-    yaml_emit::{EmitYaml, YamlEmitter},
 };
 
 pub(crate) const GHOST_FILE_EXTENSION: &str = ".ghost";
@@ -376,10 +376,6 @@ fn get_vec<'a, T: TryFrom<&'a MarkedYaml, Error = impl Into<ParseMetadataError>>
 }
 
 impl EmitYaml for PluginMetadata {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         emitter.begin_map();
 
diff --git a/src/metadata/tag.rs b/src/metadata/tag.rs
index d63a6b84..70543281 100644
--- a/src/metadata/tag.rs
+++ b/src/metadata/tag.rs
@@ -2,9 +2,9 @@ use saphyr::YamlData;
 
 use super::error::ExpectedType;
 use super::error::ParseMetadataError;
+use super::yaml::EmitYaml;
+use super::yaml::YamlEmitter;
 use super::yaml::{YamlObjectType, get_required_string_value, parse_condition};
-use super::yaml_emit::EmitYaml;
-use super::yaml_emit::YamlEmitter;
 
 /// Represents whether a Bash Tag suggestion is for addition or removal.
 #[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
diff --git a/src/metadata/yaml_emit.rs b/src/metadata/yaml/emit.rs
similarity index 98%
rename from src/metadata/yaml_emit.rs
rename to src/metadata/yaml/emit.rs
index 8f8b2f41..e0c0fb18 100644
--- a/src/metadata/yaml_emit.rs
+++ b/src/metadata/yaml/emit.rs
@@ -1,5 +1,7 @@
 pub trait EmitYaml {
-    fn is_scalar(&self) -> bool;
+    fn is_scalar(&self) -> bool {
+        false
+    }
 
     fn emit_yaml(&self, emitter: &mut YamlEmitter);
 }
@@ -277,10 +279,6 @@ fn double_quote(value: &str) -> String {
 }
 
 impl<T: EmitYaml> EmitYaml for &[T] {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         match self {
             [] => {}
@@ -305,10 +303,6 @@ impl<T: EmitYaml> EmitYaml for &[T] {
 }
 
 impl<T: EmitYaml> EmitYaml for Vec<T> {
-    fn is_scalar(&self) -> bool {
-        false
-    }
-
     fn emit_yaml(&self, emitter: &mut YamlEmitter) {
         self.as_slice().emit_yaml(emitter);
     }
diff --git a/src/metadata/yaml/merge.rs b/src/metadata/yaml/merge.rs
new file mode 100644
index 00000000..89994125
--- /dev/null
+++ b/src/metadata/yaml/merge.rs
@@ -0,0 +1,74 @@
+use std::sync::LazyLock;
+
+use saphyr::{MarkedYaml, YamlData};
+
+use crate::metadata::error::YamlMergeKeyError;
+
+use super::as_string_node;
+
+static MERGE_KEY: LazyLock<MarkedYaml> = LazyLock::new(|| as_string_node("<<"));
+
+pub fn process_merge_keys(mut yaml: MarkedYaml) -> Result<MarkedYaml, YamlMergeKeyError> {
+    match yaml.data {
+        YamlData::Array(a) => {
+            yaml.data = merge_array_elements(a).map(YamlData::Array)?;
+            Ok(yaml)
+        }
+        YamlData::Hash(h) => {
+            yaml.data = merge_hash_keys(h).map(YamlData::Hash)?;
+            Ok(yaml)
+        }
+        _ => Ok(yaml),
+    }
+}
+
+fn merge_array_elements(
+    array: saphyr::AnnotatedArray<MarkedYaml>,
+) -> Result<saphyr::AnnotatedArray<MarkedYaml>, YamlMergeKeyError> {
+    array.into_iter().map(process_merge_keys).collect()
+}
+
+fn merge_hash_keys(
+    hash: saphyr::AnnotatedHash<MarkedYaml>,
+) -> Result<saphyr::AnnotatedHash<MarkedYaml>, YamlMergeKeyError> {
+    let mut hash: saphyr::AnnotatedHash<MarkedYaml> = hash
+        .into_iter()
+        .map(|(key, value)| {
+            process_merge_keys(key)
+                .and_then(|key| process_merge_keys(value).map(|value| (key, value)))
+        })
+        .collect::<Result<_, _>>()?;
+
+    if let Some(value) = hash.remove(&MERGE_KEY) {
+        merge_into_hash(hash, value)
+    } else {
+        Ok(hash)
+    }
+}
+
+fn merge_into_hash(
+    hash: saphyr::AnnotatedHash<MarkedYaml>,
+    value: MarkedYaml,
+) -> Result<saphyr::AnnotatedHash<MarkedYaml>, YamlMergeKeyError> {
+    match value.data {
+        YamlData::<MarkedYaml>::Array(a) => a.into_iter().try_fold(hash, |acc, e| {
+            if let YamlData::Hash(h) = e.data {
+                Ok(merge_hashes(acc, h))
+            } else {
+                Err(YamlMergeKeyError::new(e))
+            }
+        }),
+        YamlData::<MarkedYaml>::Hash(h) => Ok(merge_hashes(hash, h)),
+        _ => Err(YamlMergeKeyError::new(value)),
+    }
+}
+
+fn merge_hashes(
+    mut hash1: saphyr::AnnotatedHash<MarkedYaml>,
+    hash2: saphyr::AnnotatedHash<MarkedYaml>,
+) -> saphyr::AnnotatedHash<MarkedYaml> {
+    for (key, value) in hash2 {
+        hash1.entry(key).or_insert(value);
+    }
+    hash1
+}
diff --git a/src/metadata/yaml/mod.rs b/src/metadata/yaml/mod.rs
new file mode 100644
index 00000000..8eab521a
--- /dev/null
+++ b/src/metadata/yaml/mod.rs
@@ -0,0 +1,10 @@
+mod emit;
+mod merge;
+mod parse;
+
+pub use emit::{EmitYaml, YamlEmitter};
+pub use merge::process_merge_keys;
+pub use parse::{
+    YamlObjectType, as_string_node, get_as_hash, get_as_slice, get_required_string_value,
+    get_string_value, get_strings_vec_value, get_u32_value, parse_condition, to_yaml,
+};
diff --git a/src/metadata/yaml.rs b/src/metadata/yaml/parse.rs
similarity index 91%
rename from src/metadata/yaml.rs
rename to src/metadata/yaml/parse.rs
index 7f3ea765..1364ea5e 100644
--- a/src/metadata/yaml.rs
+++ b/src/metadata/yaml/parse.rs
@@ -1,9 +1,9 @@
 use std::str::FromStr;
 
 use loot_condition_interpreter::Expression;
-use saphyr::{AnnotatedArray, AnnotatedHash, MarkedYaml, Marker, Yaml, YamlData};
+use saphyr::{AnnotatedHash, MarkedYaml, Marker, Yaml, YamlData};
 
-use super::error::{ExpectedType, MetadataParsingErrorReason, ParseMetadataError};
+use super::super::error::{ExpectedType, MetadataParsingErrorReason, ParseMetadataError};
 
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
 pub enum YamlObjectType {
@@ -42,24 +42,18 @@ pub fn to_yaml(yaml: &MarkedYaml) -> Yaml {
         saphyr::YamlData::Integer(v) => Yaml::Integer(*v),
         saphyr::YamlData::String(v) => Yaml::String(v.clone()),
         saphyr::YamlData::Boolean(v) => Yaml::Boolean(*v),
-        saphyr::YamlData::Array(v) => Yaml::Array(to_array(v)),
-        saphyr::YamlData::Hash(v) => Yaml::Hash(to_hash(v)),
+        saphyr::YamlData::Array(v) => Yaml::Array(v.iter().map(to_yaml).collect()),
+        saphyr::YamlData::Hash(v) => Yaml::Hash(
+            v.iter()
+                .map(|(key, value)| (to_yaml(key), to_yaml(value)))
+                .collect(),
+        ),
         saphyr::YamlData::Alias(v) => Yaml::Alias(*v),
         saphyr::YamlData::Null => Yaml::Null,
         saphyr::YamlData::BadValue => Yaml::BadValue,
     }
 }
 
-fn to_array(array: &AnnotatedArray<MarkedYaml>) -> saphyr::Array {
-    array.iter().map(to_yaml).collect()
-}
-
-fn to_hash(hash: &AnnotatedHash<MarkedYaml>) -> saphyr::Hash {
-    hash.iter()
-        .map(|(key, value)| (to_yaml(key), to_yaml(value)))
-        .collect()
-}
-
 pub fn as_string_node(value: &str) -> MarkedYaml {
     MarkedYaml {
         span: saphyr_parser::Span::default(),