feat(snippet): add mini.snippets

lua/astrocommunity/snippet/mini-snippets/README.md

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+# mini.snippets
+
+Manage and expand snippets. Part of 'mini.nvim' library.
+
+**Repository:** <https://github.com/echasnovski/mini.snippets>
+
+Sets up:
+
+- Leaving insert mode while in a snippet session ends the session
+  - Disable by disabling the `mini_snippets_stop` autocommand `augroup` in AstroCore
+- Configures the following snippet locations:
+  - Global user snippets in `~/.config/nvim/snippets/global.json`
+  - Language specific user snippets in `~/.config/nvim/snippets/<lang>.json`
+  - Snippets in the runtime for plugins with a `snippets` folder such as `friendly-snippets`
+  - Project local snippets including `.vscode/project.code-snippets` and `.vscode/<lang>.code-snippets`
+
+Provided Integrations:
+
+- Adds [`friendly-snippets`](https://github.com/rafamadriz/friendly-snippets)
+- Disables LuaSnip
+- Configures `blink.cmp` to use `mini.snippets` if it's available
+- Configures `nvim-cmp` to use `mini.snippets` if it's available

lua/astrocommunity/snippet/mini-snippets/init.lua

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+return {
+  "echasnovski/mini.snippets",
+  dependencies = "rafamadriz/friendly-snippets",
+  opts_extend = { "snippets" },
+  opts = function(_, opts)
+    local mini_snippets = require "mini.snippets"
+    local gen_loader = mini_snippets.gen_loader
+    opts.snippets = vim.list_extend({
+      -- global snippets file
+      gen_loader.from_file(vim.fn.stdpath "config" .. "/snippets/global.json"),
+      -- load language specific snippets from runtime
+      gen_loader.from_lang(),
+      -- load global, project local snippets
+      gen_loader.from_file ".vscode/project.code-snippets",
+      -- load language specific, project local snippets
+      function(context)
+        local rel_path = ".vscode/" .. context.lang .. ".code-snippets"
+        return vim.fn.filereadable(rel_path) == 1 and mini_snippets.read_file(rel_path)
+      end,
+    }, opts.snippets or {})
+  end,
+  specs = {
+    {
+      "AstroNvim/astrocore",
+      ---@param opts AstroCoreOpts
+      opts = function(_, opts)
+        local snippet_mode_change
+        local stop_all_sessions = function()
+          local mini_snippets = require "mini.snippets"
+          while mini_snippets.session.get(false) do
+            mini_snippets.session.stop()
+          end
+          snippet_mode_change = nil
+        end
+        opts.autocmds.mini_snippets_stop = {
+          {
+            event = "User",
+            pattern = "MiniSnippetsSessionStart",
+            desc = "Set up snippet stopping when going to normal mode autocmd",
+            callback = function()
+              if not snippet_mode_change then
+                snippet_mode_change = vim.api.nvim_create_autocmd(
+                  "ModeChanged",
+                  { pattern = "*:n", once = true, callback = stop_all_sessions }
+                )
+              end
+            end,
+          },
+        }
+      end,
+    },
+    {
+      "hrsh7th/nvim-cmp",
+      optional = true,
+      dependencies = { { "abeldekat/cmp-mini-snippets", lazy = true } },
+      opts = function(_, opts)
+        local mini_snippets, cmp = require "mini.snippets", require "cmp"
+
+        if not opts.snippet then opts.snippet = {} end
+        opts.snippet.expand = function(args)
+          (mini_snippets.config.expand.insert or mini_snippets.default_insert) { body = args.body }
+        end
+
+        if not opts.sources then opts.sources = {} end
+        table.insert(opts.sources, { name = "mini_snippets", priority = 750 })
+
+        local function has_words_before()
+          local line, col = (unpack or table.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
+        local function is_visible(CMP) return CMP.core.view:visible() or vim.fn.pumvisible() == 1 end
+
+        if not opts.mappings then opts.mappings = {} end
+        opts.mapping["<Tab>"] = cmp.mapping(function(fallback)
+          if is_visible(cmp) then
+            cmp.select_next_item()
+          elseif vim.api.nvim_get_mode().mode ~= "c" and mini_snippets.session.get(false) then
+            mini_snippets.session.jump "next"
+          elseif has_words_before() then
+            cmp.complete()
+          else
+            fallback()
+          end
+        end)
+        opts.mapping["<S-Tab>"] = cmp.mapping(function(fallback)
+          if is_visible(cmp) then
+            cmp.select_prev_item()
+          elseif vim.api.nvim_get_mode().mode ~= "c" and mini_snippets.session.get(false) then
+            mini_snippets.session.jump "prev"
+          else
+            fallback()
+          end
+        end)
+      end,
+    },
+    {
+      "Saghen/blink.cmp",
+      dependencies = "echasnovski/mini.snippets",
+      optional = true,
+      opts = { snippets = { preset = "mini_snippets" } },
+    },
+    { "L3MON4D3/LuaSnip", enabled = false },
+  },
+}