nvim: Add latex notation concealing with nabla

Notations will be concealed automatically on entering a textual buffer
and `$...$` style notations are contained.

Concealing can be turned off with <localleader>sV, which will toggle
concealing on or off for all notations in the file.
Additionally, the notation under curser can be viewed in a popup with
<localleader>sv.

nvim/.config/nvim/lazy-lock.json

@@ -40,6 +40,7 @@
   "mason-lspconfig.nvim": { "branch": "main", "commit": "2b811031febe5f743e07305738181ff367e1e452" },
   "mason.nvim": { "branch": "main", "commit": "9f6fd51ce6a3381fbed5fe33169ff20b5bd8f00b" },
   "mini.nvim": { "branch": "main", "commit": "427751024313e2270ca723eb16af7b218c83a7fc" },
+  "nabla.nvim": { "branch": "master", "commit": "4870fce48aa4ce3565fafb0e778378d728ad02b0" },
   "neural": { "branch": "main", "commit": "155618730b87a67655bdde373ee27bfce8b07ac9" },
   "nui.nvim": { "branch": "main", "commit": "0dc148c6ec06577fcf06cbab3b7dac96d48ba6be" },
   "nvim-base16": { "branch": "master", "commit": "db9ac827d833236b2b7bbacf6ec3a92f96b88890" },

nvim/.config/nvim/lua/maps.lua

@@ -267,9 +267,13 @@ map('v', '<localleader>nf', ":ZkMatch<cr>",
 -- create a lazygit window, set up in toggleterm settings
 map('n', '<leader>G', ':Lazygit<cr>')
 
+prefix({ ['<localleader>s'] = { name = '+set' } })
 -- PLUGIN: wrapping.nvim
 map('n', '<localleader>sw', [[:lua require('wrapping').toggle_wrap_mode()<cr> ]],
     { silent = true, desc = 'toggle wrap mode' })
-
 -- PLUGIN: easyread.nvim
 map('n', '<localleader>ss', ':EasyreadToggle<cr>', { silent = true, desc = 'toggle speedreading' })
+-- PLUGIN: nabla.nvim
+map('n', '<localleader>sv', '<cmd>lua require("nabla").popup()<cr>', { silent = true, desc = 'latex formula popup' })
+map('n', '<localleader>sV', '<cmd>lua require("nabla").toggle_virt({autogen = true, silent = true})<cr>',
+    { silent = true, desc = 'toggle formula notation' })

nvim/.config/nvim/lua/plugins.lua

@@ -78,6 +78,12 @@ return {
         config = function() require('plug._lualine') end
     }, -- writing
     { 'vim-pandoc/vim-criticmarkup', ft = writing_ft }, {
+    'jbyuki/nabla.nvim',
+    ft = writing_ft,
+    config = function()
+        require('nabla').enable_virt({ autogen = true, silent = true })
+    end
+}, {
     'mickael-menu/zk-nvim',
     config = function() require('zk').setup({ picker = "telescope" }) end
 }, {