From be4e083fd2b0093d7ace6179796410832761e2da Mon Sep 17 00:00:00 2001
From: Pedro Alves <pta2002@pta2002.com>
Date: Sat, 21 Jan 2023 17:09:32 +0000
Subject: [PATCH] modules/highlights: fix mkIf

---
 modules/highlights.nix | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/modules/highlights.nix b/modules/highlights.nix
index 1758d403..0c6c473a 100644
--- a/modules/highlights.nix
+++ b/modules/highlights.nix
@@ -28,8 +28,8 @@ with lib;
     };
   };
 
-  config = mkIf (config.highlight != { }) {
-    extraConfigLuaPost = ''
+  config = mkIf (config.highlight != { } || config.matches != { }) {
+    extraConfigLuaPost = (optionalString (config.highlight != { }) ''
       -- Highlight groups {{
       do
         local highlights = ${helpers.toLuaObject config.highlight}
@@ -39,16 +39,18 @@ with lib;
         end
       end
       -- }}
-
+    '') ++
+    (optionalString (config.matches != { }) ''
       -- Match groups {{
-      do
-        local match = ${helpers.toLuaObject config.match}
+        do
+          local match = ${helpers.toLuaObject config.match}
 
-        for k,v in pairs(match) do
-          vim.fn.matchadd(k, v)
+          for k,v in pairs(match) do
+            vim.fn.matchadd(k, v)
+          end
         end
-      end
-      -- }}
-    '';
+        -- }}
+    '');
   };
 }
+