[feat] nvim: highlight lua codesnippets

Adding a comment with the language will automatically highlight the
code:

```nix
luaCode = /*lua*/ ''
    function() return "look ma I'm highlighted!" end
'';
```

(May only work using treesitter)

nvim/augroups.nix

@@ -12,28 +12,38 @@ in {
         group = "highlightOnYank";
         event = "TextYankPost";
         pattern = "*";
-        callback = mkRaw ''
-          function()
-            vim.highlight.on_yank {
-              higroup = (
-                vim.fn['hlexists'] 'HighlightedyankRegion' > 0 and 'HighlightedyankRegion' or 'IncSearch'
-              ),
-              timeout = 200,
-            }
-          end
-        '';
+        callback =
+          mkRaw
+          /*
+          lua
+          */
+          ''
+            function()
+              vim.highlight.on_yank {
+                higroup = (
+                  vim.fn['hlexists'] 'HighlightedyankRegion' > 0 and 'HighlightedyankRegion' or 'IncSearch'
+                ),
+                timeout = 200,
+              }
+            end
+          '';
       }
       {
         group = "restoreCursorPosition";
         event = "BufReadPost";
         pattern = "*";
-        callback = mkRaw ''
-          function()
-            if vim.fn.line '\'"' > 0 and vim.fn.line '\'"' <= vim.fn.line '$' then
-              vim.cmd [[execute "normal! g'\""]]
+        callback =
+          mkRaw
+          /*
+          lua
+          */
+          ''
+            function()
+              if vim.fn.line '\'"' > 0 and vim.fn.line '\'"' <= vim.fn.line '$' then
+                vim.cmd [[execute "normal! g'\""]]
+              end
             end
-          end
-        '';
+          '';
       }
       {
         group = "lspConfig";
@@ -42,7 +52,11 @@ in {
         callback = let
           opts = "noremap = true, buffer = bufnr";
         in
-          mkRaw ''
+          mkRaw
+          /*
+          lua
+          */
+          ''
             function(opts)
               local bufnr = opts.buf
               local client = vim.lsp.get_client_by_id(opts.data.client_id)

nvim/mappings.nix

@@ -51,99 +51,180 @@ in {
     {
       mode = "n";
       key = "<leader>dj";
-      action = mkRaw "vim.diagnostic.goto_next";
+      action =
+        mkRaw
+        # lua
+        ''
+          vim.diagnostic.goto_next
+        '';
       options.desc = "Diagnostics next [J]";
     }
     {
       mode = "n";
       key = "<leader>dk";
-      action = mkRaw "vim.diagnostic.goto_prev";
+      action =
+        mkRaw
+        # lua
+        ''
+          vim.diagnostic.goto_prev
+        '';
       options.desc = "Diagnostics previous [K]";
     }
     {
       mode = "n";
       key = "<leader>xx";
-      action = mkRaw "require('trouble').toggle";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('trouble').toggle
+        '';
       options.desc = "Toggle trouble";
     }
     {
       mode = "n";
       key = "<leader>xw";
-      action = mkRaw "function() require('trouble').toggle('workspace_diagnostics') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('workspace_diagnostics') end
+        '';
       options.desc = "Toggle Workspace trouble";
     }
     {
       mode = "n";
       key = "<leader>xd";
-      action = mkRaw "function() require('trouble').toggle('document_diagnostics') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('document_diagnostics') end
+        '';
       options.desc = "Toggle Document trouble";
     }
     {
       mode = "n";
       key = "<leader>xq";
-      action = mkRaw "function() require('trouble').toggle('quickfix') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('quickfix') end
+        '';
       options.desc = "Toggle Quickfix trouble";
     }
     {
       mode = "n";
       key = "<leader>xl";
-      action = mkRaw "function() require('trouble').toggle('loclist') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('loclist') end
+        '';
       options.desc = "Toggle Loclist trouble";
     }
     {
       mode = "n";
       key = "gR";
-      action = mkRaw "function() require('trouble').toggle('lsp_references') end";
+      action =
+        mkRaw
+        # lua
+        ''
+          function() require('trouble').toggle('lsp_references') end
+        '';
       options.desc = "Toggle lsp References trouble";
     }
     # Telescope
     {
       mode = "n";
       key = "<leader>ff";
-      action = mkRaw "require('telescope.builtin').find_files";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').find_files
+        '';
       options.desc = "Find Files";
     }
     {
       mode = "n";
       key = "<leader>fg";
-      action = mkRaw "require('telescope.builtin').live_grep";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').live_grep
+        '';
       options.desc = "Find Grep";
     }
     {
       mode = "n";
       key = "<leader>fh";
-      action = mkRaw "require('telescope.builtin').help_tags";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').help_tags
+        '';
       options.desc = "Find Help";
     }
     {
       mode = "n";
       key = "<leader>fb";
-      action = mkRaw "require('telescope.builtin').buffers";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').buffers
+        '';
       options.desc = "Find Buffer";
     }
     {
       mode = "n";
       key = "<leader>fd";
-      action = mkRaw "require('telescope.builtin').diagnostics";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').diagnostics
+        '';
       options.desc = "Find Diagnostics";
     }
     {
       mode = "n";
       key = "<leader>fq";
-      action = mkRaw "require('telescope.builtin').quickfix";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('telescope.builtin').quickfix
+        '';
       options.desc = "Find Quickfix";
     }
     {
       mode = "n";
       key = "<leader>w";
-      action = mkRaw "require('conform').format";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('conform').format
+        '';
       options.desc = "Format buffer";
     }
     # Nvim Silicon
     {
       mode = "v";
       key = "<leader>sc";
-      action = mkRaw "require('nvim-silicon').clip";
+      action =
+        mkRaw
+        # lua
+        ''
+          require('nvim-silicon').clip
+
+        '';
       options.desc = "Snap Code (to clipboard)";
     }
   ];

nvim/plugins.nix

@@ -15,14 +15,28 @@ in {
       enable = true;
       cmdline = {
         "/" = {
-          mapping = mkRaw "cmp.mapping.preset.cmdline()";
+          mapping =
+            mkRaw
+            /*
+            lua
+            */
+            ''
+              cmp.mapping.preset.cmdline()
+            '';
           sources = [
             {name = "rg";}
             {name = "buffer";}
           ];
         };
         ":" = {
-          mapping = mkRaw "cmp.mapping.preset.cmdline()";
+          mapping =
+            mkRaw
+            /*
+            lua
+            */
+            ''
+              cmp.mapping.preset.cmdline()
+            '';
           sources = [
             {name = "path";}
             {name = "cmdline";}
@@ -31,7 +45,13 @@ in {
       };
       settings = {
         # Snippets
-        snippet.expand = "function(args) require('luasnip').lsp_expand(args.body) end";
+        snippet.expand =
+          /*
+          lua
+          */
+          ''
+            function(args) require('luasnip').lsp_expand(args.body) end
+          '';
         # Completion Sources
         sources = [
           {
@@ -83,42 +103,47 @@ in {
             groupIndex = 1;
           }
         ];
-        mapping = mkRaw ''
-          cmp.mapping.preset.insert({
-            ["<C-n>"] = function(fallback)
-              if cmp.visible() then
-                cmp.select_next_item()
-              elseif require("luasnip").expand_or_jumpable() then
-                require("luasnip").expand_or_jump()
-              elseif has_words_before() then
-                cmp.complete()
-              else
-                fallback()
-              end
-            end,
-            ["<C-p>"] = function(fallback)
-              if cmp.visible() then
-                cmp.select_prev_item()
-              elseif require("luasnip").jumpable(-1) then
-                require("luasnip").jump(-1)
-              else
-                fallback()
-              end
-            end,
-            ["<C-u>"] = cmp.mapping(function(fallback)
-              if require("luasnip").choice_active() then
-                require("luasnip").next_choice()
-              else
-                fallback()
-              end
-            end),
-            ["<C-b>"] = cmp.mapping.scroll_docs(-4),
-            ["<C-f>"] = cmp.mapping.scroll_docs(4),
-            ["<C-Space>"] = cmp.mapping.complete { },
-            ["<C-e>"] = cmp.mapping.close(),
-            ["<CR>"] = cmp.mapping.confirm { select = true },
-          })
-        '';
+        mapping =
+          mkRaw
+          /*
+          lua
+          */
+          ''
+            cmp.mapping.preset.insert({
+              ["<C-n>"] = function(fallback)
+                if cmp.visible() then
+                  cmp.select_next_item()
+                elseif require("luasnip").expand_or_jumpable() then
+                  require("luasnip").expand_or_jump()
+                elseif has_words_before() then
+                  cmp.complete()
+                else
+                  fallback()
+                end
+              end,
+              ["<C-p>"] = function(fallback)
+                if cmp.visible() then
+                  cmp.select_prev_item()
+                elseif require("luasnip").jumpable(-1) then
+                  require("luasnip").jump(-1)
+                else
+                  fallback()
+                end
+              end,
+              ["<C-u>"] = cmp.mapping(function(fallback)
+                if require("luasnip").choice_active() then
+                  require("luasnip").next_choice()
+                else
+                  fallback()
+                end
+              end),
+              ["<C-b>"] = cmp.mapping.scroll_docs(-4),
+              ["<C-f>"] = cmp.mapping.scroll_docs(4),
+              ["<C-Space>"] = cmp.mapping.complete { },
+              ["<C-e>"] = cmp.mapping.close(),
+              ["<CR>"] = cmp.mapping.confirm { select = true },
+            })
+          '';
       };
     };
     # FIXME: doesn't include formatters

nvim/standalone.nix

@@ -55,37 +55,41 @@
       pkgs.unstable.typos
       pkgs.unstable.yamlfmt
     ];
-    extraConfigLuaPre = ''
-      -- Lua Pre Config
-      if vim.fn.has 'termguicolors' then
-        -- Enable RGB colors
-        vim.g.termguicolors = true
-      end
+    extraConfigLuaPre =
+      # lua
+      ''
+        -- Lua Pre Config
+        if vim.fn.has 'termguicolors' then
+          -- Enable RGB colors
+          vim.g.termguicolors = true
+        end
 
-      -- Useful function
-      local has_words_before = function()
-        -- unpack = unpack or table.unpack
-        local line, col = unpack(vim.api.nvim_win_get_cursor(0))
-        return col ~= 0
-          and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match '%s' == nil
-      end
-      -- END: Lua Pre Config
-    '';
-    extraConfigLua = ''
-      -- Lua Config
-      require("nvim-silicon").setup {
-        theme = "gruvbox-dark",
-        pad_horiz = 16,
-       pad_vert = 16,
-        -- Current buffer name
-        window_title = function()
-            return vim.fn.fnamemodify(
-                vim.api.nvim_buf_get_name(vim.api.nvim_get_current_buf()),
-                ":t"
-            )
-        end,
-      }
-      -- END: Lua Config
-    '';
+        -- Useful function
+        local has_words_before = function()
+          -- unpack = unpack or table.unpack
+          local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+          return col ~= 0
+            and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match '%s' == nil
+        end
+        -- END: Lua Pre Config
+      '';
+    extraConfigLua =
+      # lua
+      ''
+        -- Lua Config
+        require("nvim-silicon").setup {
+          theme = "gruvbox-dark",
+          pad_horiz = 16,
+         pad_vert = 16,
+          -- Current buffer name
+          window_title = function()
+              return vim.fn.fnamemodify(
+                  vim.api.nvim_buf_get_name(vim.api.nvim_get_current_buf()),
+                  ":t"
+              )
+          end,
+        }
+        -- END: Lua Config
+      '';
   };
 }