feat: add MarkSignLineHL

Author: rapan931

README.md

@@ -175,6 +175,9 @@ marks.nvim defines the following highlight groups:
 
 `MarkSignNumHL` The highlight group for the number line in a signcolumn.
 
+`MarkSignLineHL` The highlight group for the whole line the sign is placed in.
+  (The default is "NONE", so it will not be highlighted unless changed.)
+
 `MarkVirtTextHL` The highlight group for bookmark virtual text annotations.
 
 marks.nvim also defines the following commands:

doc/marks-nvim.txt

@@ -302,8 +302,12 @@ see |sign_define()|.
 *MarkSignNumHL*
   (defaults to |LineNr|)
 
-  The highlight group for the number line in a signcolumn: see
-  |sign_define()|.
+  The highlight group for the number line in a signcolumn.
+
+*MarkSignLineHL*
+  (defaults to |NONE|)
+
+  The highlight group for the whole line the sign is placed in.
 
 *MarkVirtTextHL*
   (defaults to |Comment|)

lua/marks/utils.lua

@@ -12,7 +12,7 @@ function M.add_sign(bufnr, text, line, id, group, priority)
   if not M.sign_cache[sign_name] then
     M.sign_cache[sign_name] = true
     vim.fn.sign_define(sign_name, { text = text, texthl = "MarkSignHL",
-                                    numhl = "MarkSignNumHL" })
+                                    numhl = "MarkSignNumHL", linehl = "MarkSignLineHL" })
   end
   vim.fn.sign_place(id, group, sign_name, bufnr, { lnum = line, priority = priority })
 end

plugin/marks.vim

@@ -4,7 +4,7 @@ endif
 let g:loaded_marks = 1
 
 hi default link MarkSignHL Identifier
-" hi default link MarkSignLineHL Normal
+hi default link MarkSignLineHL NONE
 hi default link MarkSignNumHL CursorLineNr
 hi default link MarkVirtTextHL Comment