feat: add stubs for blink.cmp source registration

## Details

Will do the equivalent of adding the markdown source to `blink.cmp` once
the `add_source_provider` API is released.

Currently it is not so just print a warning to any users that attempt to
use it before this release.

Leave the `blink.cmp` integration instructions unchanged until (likely
next) release of `blink.cmp`.

Author: MeanderingProgrammer

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 ## Pre-release
 
+### Features
+
+- enabled flag for link footnote [#362](https://github.com/MeanderingProgrammer/render-markdown.nvim/pull/362)
+  [9721ffe](https://github.com/MeanderingProgrammer/render-markdown.nvim/commit/9721ffe230ec90e49c49ee33b5ca44c3fc689214)
+
+### Collaborator Shoutouts
+
+- @water-sucks
+
 ## 8.1.1 (2025-03-09)
 
 ### Bug Fixes

README.md

@@ -277,6 +277,8 @@ require('render-markdown').setup({
         clear = function() end,
     },
     completions = {
+        -- Settings for blink.cmp completions source
+        blink = { enabled = false },
         -- Settings for coq_nvim completions source
         coq = { enabled = false },
         -- Settings for in-process language server completions

doc/render-markdown.txt

@@ -1,4 +1,4 @@
-*render-markdown.txt*           For 0.10.0          Last change: 2025 March 16
+*render-markdown.txt*           For 0.10.0          Last change: 2025 March 18
 
 ==============================================================================
 Table of Contents                          *render-markdown-table-of-contents*
@@ -342,6 +342,8 @@ Default Configuration ~
             clear = function() end,
         },
         completions = {
+            -- Settings for blink.cmp completions source
+            blink = { enabled = false },
             -- Settings for coq_nvim completions source
             coq = { enabled = false },
             -- Settings for in-process language server completions

lua/render-markdown/health.lua

@@ -5,7 +5,7 @@ local state = require('render-markdown.state')
 local M = {}
 
 ---@private
-M.version = '8.1.3'
+M.version = '8.1.4'
 
 function M.check()
     M.start('version')

lua/render-markdown/init.lua

@@ -30,6 +30,7 @@ local M = {}
 ---@field enabled? boolean
 
 ---@class (exact) render.md.UserCompletions
+---@field blink? render.md.UserCompletion
 ---@field coq? render.md.UserCompletion
 ---@field lsp? render.md.UserCompletion
 
@@ -429,6 +430,8 @@ M.default_config = {
         clear = function() end,
     },
     completions = {
+        -- Settings for blink.cmp completions source
+        blink = { enabled = false },
         -- Settings for coq_nvim completions source
         coq = { enabled = false },
         -- Settings for in-process language server completions

lua/render-markdown/integ/blink.lua

@@ -38,4 +38,20 @@ function Source:get_completions(context, callback)
     end
 end
 
+---@class render.md.integ.Blink
+---@field private registered boolean
+local M = {
+    registered = false,
+}
+
+---Should only be called from manager on initial buffer attach
+function Source.setup()
+    if M.registered then
+        return
+    end
+    M.registered = true
+    -- TODO(blink.cmp): need add_source_provider to be released
+    vim.notify('render-markdown.nvim blink.cmp source registeration requires add_source_provider', 3)
+end
+
 return Source

lua/render-markdown/manager.lua

@@ -89,6 +89,8 @@ function M.attach(buf)
     state.on.attach({ buf = buf })
     if state.completions.lsp.enabled then
         require('render-markdown.integ.lsp').setup()
+    elseif state.completions.blink.enabled then
+        require('render-markdown.integ.blink').setup()
     elseif state.completions.coq.enabled then
         require('render-markdown.integ.coq').setup()
     else

lua/render-markdown/state.lua

@@ -343,6 +343,9 @@ function M.validate()
         end)
         :nested('completions', function(completions)
             completions
+                :nested('blink', function(coq)
+                    coq:type('enabled', 'boolean'):check()
+                end)
                 :nested('coq', function(coq)
                     coq:type('enabled', 'boolean'):check()
                 end)

lua/render-markdown/types.lua

@@ -4,6 +4,7 @@
 ---@field enabled boolean
 
 ---@class (exact) render.md.Completions
+---@field blink render.md.Completion
 ---@field coq render.md.Completion
 ---@field lsp render.md.Completion