using plenary to fetch synonyms instead of systemlist

README.md

@@ -2,6 +2,8 @@
 
 A [Telescope](https://github.com/nvim-telescope/telescope.nvim) extension that loads a list of synonyms for the word under the cusor in the current buffer, and shows their definition in the preview window. Selecting one of the synonyms replaces the word in the buffer.
 
+![Screenshot](https://raw.githubusercontent.com/wiki/rudism/telescope-dict.nvim/img/screen_shot.png)
+
 ## Requirements
 
 These should be available through your package manager (or likely already installed, in the case of `perl`):

lua/telescope/_extensions/dict.lua

@@ -1,3 +1,4 @@
+-- command
 local telescope = require('telescope')
 local pickers = require('telescope.pickers')
 local finders = require('telescope.finders')
@@ -6,13 +7,14 @@ local previewers = require('telescope.previewers')
 local previewer_utils = require('telescope.previewers.utils')
 local actions = require('telescope.actions')
 local action_state = require('telescope.actions.state')
+local Job = require('plenary.job')
 
-function script_path()
+local function script_path()
   local str = debug.getinfo(2, "S").source:sub(2)
   return str:match("(.*/)")
 end
 
-function upper_first(word)
+local function upper_first(word)
   return word:gsub("(%a)([%w_']*)", function(first, rest) return first:upper()..rest:lower() end)
 end
 
@@ -21,13 +23,11 @@ return telescope.register_extension {
     synonyms = function(opts)
       opts = opts or {}
       local cursor_word = vim.fn.expand("<cword>")
-      local command = table.concat({
-        "perl ",
-        script_path().."/cmd.pl ",
-        "synonyms ",
-        vim.fn.shellescape(cursor_word)
-      })
-      local synonyms = vim.fn.systemlist(command) or {}
+      Job:new({
+        command = 'perl',
+        args = { script_path().."/cmd.pl", "synonyms", cursor_word },
+        on_exit = vim.schedule_wrap(function(job)
+          local synonyms = job:result() or {}
           table.insert(synonyms, cursor_word:lower())
           pickers.new(opts, {
             prompt_title = upper_first(cursor_word).." Synonyms",
@@ -36,12 +36,12 @@ return telescope.register_extension {
             },
             sorter = sorters.get_substr_matcher(),
             previewer = previewers.new_buffer_previewer({
-          define_preview = function(self, entry, status)
+              define_preview = function(self, entry, _)
                 vim.api.nvim_win_set_option(self.state.winid, 'wrap', true)
                 vim.api.nvim_win_set_option(self.state.winid, 'lbr', true)
                 local cmd = { "perl", script_path().."/cmd.pl", "definitions", entry.value }
                 return previewer_utils.job_maker(cmd, self.state.bufnr, {
-              callback = function(bufnr, content)
+                  callback = function(bufnr, _)
                     previewer_utils.highlighter(bufnr, 'yaml')
                   end
                 })
@@ -59,6 +59,8 @@ return telescope.register_extension {
               return true
             end,
           }):find()
+        end)
+      }):start()
     end
   }
 }