fix(alpha): patch alpha button function until resolved upstream

PR fix opened upstream: goolord/alpha-nvim#271

Author: mehalter

lua/astronvim/plugins/alpha.lua

@@ -77,14 +77,42 @@ return {
   opts = function()
     local dashboard = require "alpha.themes.dashboard"
 
-    local orig_button = dashboard.button -- customize button function
-    dashboard.button = function(...)
-      return vim.tbl_deep_extend("force", orig_button(...), {
-        opts = { cursor = -2, width = 36, hl = "DashboardCenter", hl_shortcut = "DashboardShortcut" },
-      })
-    end
     dashboard.leader = "LDR"
 
+    --- @param sc string
+    --- @param txt string
+    --- @param keybind string? optional
+    --- @param keybind_opts table? optional
+    dashboard.button = function(sc, txt, keybind, keybind_opts)
+      -- HACK: fixes leader customization, remove after fixed upstream
+      -- https://github.com/goolord/alpha-nvim/pull/271
+      local sc_ = sc:gsub("%s", ""):gsub(dashboard.leader, "<leader>")
+
+      return {
+        type = "button",
+        val = txt,
+        on_press = function()
+          local key = vim.api.nvim_replace_termcodes(keybind or sc_ .. "<Ignore>", true, false, true)
+          vim.api.nvim_feedkeys(key, "t", false)
+        end,
+        opts = {
+          position = "center",
+          shortcut = sc,
+          cursor = -2,
+          width = 36,
+          align_shortcut = "right",
+          hl = "DashboardCenter",
+          hl_shortcut = "DashboardShortcut",
+          keymap = keybind and {
+            "n",
+            sc_,
+            keybind,
+            vim.F.if_nil(keybind_opts, { noremap = true, silent = true, nowait = true }),
+          },
+        },
+      }
+    end
+
     dashboard.section.header.val = {
       " █████  ███████ ████████ ██████   ██████",
       "██   ██ ██         ██    ██   ██ ██    ██",