feat(highlight): add `FloatFooter` highlight group

Problem: No clear separation of floating title and footer highlighting.

Solution: Add new `FloatFooter` highlight group.

1 files changed, 5 insertions, 3 deletions

diff --git a/src/nvim/api/win_config.c b/src/nvim/api/win_config.c
index 325d0cbfa0..ac27554172 100644
--- a/src/nvim/api/win_config.c
+++ b/src/nvim/api/win_config.c
@@ -153,7 +153,7 @@
 ///     Default is `"left"`.
 ///   - footer: Footer (optional) in window border, string or list.
 ///     List should consist of `[text, highlight]` tuples.
-///     If string, the default highlight group is `FloatTitle`.
+///     If string, the default highlight group is `FloatFooter`.
 ///   - footer_pos: Footer position. Must be set with `footer` option.
 ///     Value can be one of "left", "center", or "right".
 ///     Default is `"left"`.
@@ -428,16 +428,19 @@ static void parse_bordertext(Object bordertext, BorderTextType bordertext_type,
   bool *is_present;
   VirtText *chunks;
   int *width;
+  int default_hl_id;
   switch (bordertext_type) {
   case kBorderTextTitle:
     is_present = &fconfig->title;
     chunks = &fconfig->title_chunks;
     width = &fconfig->title_width;
+    default_hl_id = syn_check_group(S_LEN("FloatTitle"));
     break;
   case kBorderTextFooter:
     is_present = &fconfig->footer;
     chunks = &fconfig->footer_chunks;
     width = &fconfig->footer_width;
+    default_hl_id = syn_check_group(S_LEN("FloatFooter"));
     break;
   }
 
@@ -446,9 +449,8 @@ static void parse_bordertext(Object bordertext, BorderTextType bordertext_type,
       *is_present = false;
       return;
     }
-    int hl_id = syn_check_group(S_LEN("FloatTitle"));
     kv_push(*chunks, ((VirtTextChunk){ .text = xstrdup(bordertext.data.string.data),
-                                       .hl_id = hl_id }));
+                                       .hl_id = default_hl_id }));
     *width = (int)mb_string2cells(bordertext.data.string.data);
     *is_present = true;
     return;