refactor(api): give "hl_group" more accurate _meta type

These can either be number or string in lua, so we can specify this
directly as "number|string".

2 files changed, 6 insertions, 5 deletions

diff --git a/src/nvim/api/keysets_defs.h b/src/nvim/api/keysets_defs.h
index aad8ba3238..b2f0039eb9 100644
--- a/src/nvim/api/keysets_defs.h
+++ b/src/nvim/api/keysets_defs.h
@@ -28,7 +28,7 @@ typedef struct {
   Integer end_line;
   Integer end_row;
   Integer end_col;
-  Integer hl_group;
+  HLGroupID hl_group;
   Array virt_text;
   String virt_text_pos;
   Integer virt_text_win_col;
@@ -46,10 +46,10 @@ typedef struct {
   Boolean virt_lines_leftcol;
   Boolean strict;
   String sign_text;
-  Integer sign_hl_group;
-  Integer number_hl_group;
-  Integer line_hl_group;
-  Integer cursorline_hl_group;
+  HLGroupID sign_hl_group;
+  HLGroupID number_hl_group;
+  HLGroupID line_hl_group;
+  HLGroupID cursorline_hl_group;
   String conceal;
   Boolean spell;
   Boolean ui_watched;
diff --git a/src/nvim/api/private/defs.h b/src/nvim/api/private/defs.h
index 84ded1e647..0cdc90e50f 100644
--- a/src/nvim/api/private/defs.h
+++ b/src/nvim/api/private/defs.h
@@ -124,6 +124,7 @@ struct key_value_pair {
 };
 
 typedef uint64_t OptionalKeys;
+typedef Integer HLGroupID;
 
 // this is the prefix of all keysets with optional keys
 typedef struct {