Add nvim-dap, custom commands pickers

lua/custom/commands.lua

@@ -0,0 +1,5 @@
+local C = {
+  { "Replace {{X}} with {{ X }} in jinja template", "%s/{{\\(.[^ ]*\\)}}/{{ \\1 }}/g" },
+}
+
+return C

lua/custom/telescope.lua

@@ -2,6 +2,11 @@
 
 local previewers = require('telescope.previewers')
 local builtin = require('telescope.builtin')
+local pickers = require("telescope.pickers")
+local finders = require("telescope.finders")
+local actions = require("telescope.actions")
+local action_state = require("telescope.actions.state")
+local conf = require("telescope.config").values
 
 local E = {}
 
@@ -59,4 +64,44 @@ E.project_files = function()
   end
 end
 
+local custom_commands = require("custom.commands")
+
+E.cpickers = function(opts)
+  opts = opts or {}
+  pickers.new(opts, {
+    prompt_title = "Commands",
+
+    finder = finders.new_table {
+      results = custom_commands,
+      entry_maker = function(entry)
+        return {
+          value = entry,
+          display = entry[1],
+          ordinal = entry[2],
+        }
+      end
+    },
+
+    previewer = previewers.new_buffer_previewer {
+      title = "Custom commands preview",
+      define_preview = function (self, entry, _)
+        vim.api.nvim_buf_set_lines(self.state.bufnr, 0, -1, false, {
+          entry['ordinal'],
+        })
+      end
+    },
+
+    attach_mappings = function(prompt_bufnr, _)
+      actions.select_default:replace(function()
+        actions.close(prompt_bufnr)
+        local selection = action_state.get_selected_entry()
+        vim.cmd(selection.ordinal)
+      end)
+      return true
+    end,
+
+    sorter = conf.generic_sorter(opts),
+  }):find()
+end
+
 return E