feat(lsp): use a parameter strategy similar to `enable`

runtime/doc/lsp.txt

@@ -1649,13 +1649,15 @@ get({filter})                                       *vim.lsp.inlay_hint.get()*
         • {client_id} (`integer`)
         • {inlay_hint} (`lsp.InlayHint`)
 
-is_enabled({bufnr})                          *vim.lsp.inlay_hint.is_enabled()*
+is_enabled({filter})                         *vim.lsp.inlay_hint.is_enabled()*
 
     Note: ~
       • This API is pre-release (unstable).
 
     Parameters: ~
-      • {bufnr}  (`integer?`) Buffer handle, or 0 for current
+      • {filter}  (`table`) Optional filters |kwargs|, or `nil` for all.
+                  • {bufnr} (`integer?`) Buffer number, or 0/nil for current
+                    buffer.
 
     Return: ~
         (`boolean`)

runtime/doc/news.txt

@@ -146,6 +146,8 @@ BREAKING CHANGES IN HEAD                                    *news-breaking-dev*
 The following breaking changes were made during the development cycle to
 unreleased features on Nvim HEAD.
 
+• Changed the signature of `vim.lsp.inlay_hint.is_enabled()`.
+
 • Removed `vim.treesitter.foldtext` as transparent foldtext is now supported
   https://github.com/neovim/neovim/pull/20750
 

runtime/lua/vim/lsp/inlay_hint.lua

@@ -353,11 +353,25 @@ api.nvim_set_decoration_provider(namespace, {
   end,
 })
 
---- @param bufnr (integer|nil) Buffer handle, or 0 for current
+--- @param filter vim.lsp.inlay_hint.enable.Filter
 --- @return boolean
 --- @since 12
-function M.is_enabled(bufnr)
-  vim.validate({ bufnr = { bufnr, 'number', true } })
+function M.is_enabled(filter)
+  ---@type integer
+  local bufnr
+  if type(filter) == 'number' then
+    vim.deprecate(
+      'vim.lsp.inlay_hint.is_enabled(bufnr:number)',
+      'vim.lsp.inlay_hint.is_enabled(filter:table)',
+      '0.10-dev'
+    )
+    bufnr = filter
+  else
+    vim.validate({ filter = { filter, 'table', true } })
+    filter = filter or {}
+    bufnr = filter.bufnr
+  end
+
   if bufnr == nil or bufnr == 0 then
     bufnr = api.nvim_get_current_buf()
   end

test/functional/plugin/lsp/inlay_hint_spec.lua

@@ -145,7 +145,7 @@ describe('vim.lsp.inlay_hint', function()
       screen:expect({ grid = grid_with_inlay_hints, unchanged = true })
 
       exec_lua(
-        [[vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled(bufnr), { bufnr = bufnr })]]
+        [[vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled({ bufnr = bufnr }), { bufnr = bufnr })]]
       )
       screen:expect({ grid = grid_without_inlay_hints, unchanged = true })