feat: include icon provider warning in health check

## Details

Improves visibility into cause of missing language icons by informing
users what icons provider (mini or nvim-web-devicons) is being used if
there is one. Produces a warning if none is available.

Related issue: #270

Also updates blink.cmp setup following most recent changes.

Author: MeanderingProgrammer

README.md

@@ -136,11 +136,13 @@ cmp.setup({
 ```lua
 require('blink.cmp').setup({
     sources = {
-        completion = {
-            enabled_providers = { 'lsp', 'path', 'snippets', 'buffer', 'markdown' },
-        },
+        default = { 'lsp', 'path', 'snippets', 'buffer', 'markdown' },
         providers = {
-            markdown = { name = 'RenderMarkdown', module = 'render-markdown.integ.blink' },
+            markdown = {
+                name = 'RenderMarkdown',
+                module = 'render-markdown.integ.blink',
+                fallbacks = { 'lsp' },
+            },
         },
     },
 })

doc/render-markdown.txt

@@ -1,4 +1,4 @@
-*render-markdown.txt*         For 0.10.0         Last change: 2024 December 24
+*render-markdown.txt*         For 0.10.0         Last change: 2024 December 29
 
 ==============================================================================
 Table of Contents                          *render-markdown-table-of-contents*
@@ -189,11 +189,13 @@ BLINK.CMP                              *render-markdown-completions-blink.cmp*
 >lua
     require('blink.cmp').setup({
         sources = {
-            completion = {
-                enabled_providers = { 'lsp', 'path', 'snippets', 'buffer', 'markdown' },
-            },
+            default = { 'lsp', 'path', 'snippets', 'buffer', 'markdown' },
             providers = {
-                markdown = { name = 'RenderMarkdown', module = 'render-markdown.integ.blink' },
+                markdown = {
+                    name = 'RenderMarkdown',
+                    module = 'render-markdown.integ.blink',
+                    fallbacks = { 'lsp' },
+                },
             },
         },
     })

justfile

@@ -28,7 +28,7 @@ generate:
   python scripts/generate.py
 
 health:
-  nvim -c "checkhealth render-markdown" -- .
+  nvim -c "checkhealth render-markdown" -- -
 
 cat-log:
   cat ~/.local/state/nvim/render-markdown.log

lua/render-markdown/health.lua

@@ -1,10 +1,11 @@
+local Icons = require('render-markdown.lib.icons')
 local state = require('render-markdown.state')
 
 ---@class render.md.Health
 local M = {}
 
 ---@private
-M.version = '7.7.5'
+M.version = '7.7.6'
 
 function M.check()
     M.start('version')
@@ -38,6 +39,14 @@ function M.check()
         vim.health.error('not installed')
     end
 
+    M.start('icons')
+    local provider = Icons.provider()
+    if provider ~= nil then
+        vim.health.ok('using: ' .. provider)
+    else
+        vim.health.warn('none installed')
+    end
+
     M.start('executables')
     if latex.enabled then
         M.check_executable(latex.converter, latex_advice)

lua/render-markdown/lib/icons.lua

@@ -20,4 +20,15 @@ function M.get(language)
     end
 end
 
+---@return string?
+function M.provider()
+    if has_mini_icons then
+        return 'mini.icons'
+    elseif has_devicons then
+        return 'nvim-web-devicons'
+    else
+        return nil
+    end
+end
+
 return M