diff --git a/gengo/build.rs b/gengo/build.rs
index 3fe29714..f569b463 100644
--- a/gengo/build.rs
+++ b/gengo/build.rs
@@ -52,6 +52,7 @@ fn main() -> Result<(), Box<dyn Error>> {
             let category = match category {
                 "data" => "Data",
                 "markup" => "Markup",
+                "pattern" => "Pattern",
                 "programming" => "Programming",
                 "prose" => "Prose",
                 "query" => "Query",
diff --git a/gengo/languages.yaml b/gengo/languages.yaml
index db255b72..68ff7b46 100644
--- a/gengo/languages.yaml
+++ b/gengo/languages.yaml
@@ -68,7 +68,7 @@ ABAP:
     extensions:
       - abap
 ABNF:
-  category: data
+  category: pattern
   color: "#ABFABF"
   matchers:
     extensions:
@@ -766,7 +766,7 @@ Raku:
       - perl6
       - raku
 Regex:
-  category: data
+  category: pattern
   color: "#44E03F"
   nerd-font-glyph: "\U0000eb38"
   matchers:
diff --git a/gengo/src/language/mod.rs b/gengo/src/language/mod.rs
index a5527816..1f218372 100644
--- a/gengo/src/language/mod.rs
+++ b/gengo/src/language/mod.rs
@@ -228,6 +228,8 @@ pub enum Category {
     Data,
     /// Markup languages. Examples: HTML, Pug, etc.
     Markup,
+    /// Languages that define text patterns. Examples: Regex, ABNF, etc.
+    Pattern,
     /// Programming languages. Examples: Rust, C, C++, Java, etc.
     Programming,
     /// Prose. Examples: Plain text, Markdown, etc.
diff --git a/gengo/src/lib.rs b/gengo/src/lib.rs
index 18bc2752..e0309c7d 100644
--- a/gengo/src/lib.rs
+++ b/gengo/src/lib.rs
@@ -114,7 +114,7 @@ impl<FS: for<'fs> FileSource<'fs>> Gengo<FS> {
 
         let detectable = match language.category() {
             Category::Data | Category::Prose => false,
-            Category::Programming | Category::Markup | Category::Query => {
+            Category::Pattern | Category::Programming | Category::Markup | Category::Query => {
                 !(generated || documentation || vendored)
             }
         };