Example doesn't work in Neovim

[yatesco]

Hi there - inspired by https://www.reddit.com/r/vim/comments/kqf1a9/new_plugin_hotpop_map_keys_and_create_cheatsheet/ I thought I'd give it a try :-).

I added Plug 'mipmip/vim-hotpop' and

  call hotpop#init() "run this before other calls
  
  "              MODE    <SPECIALS>   KEYSEQ          COMMAND                   SHEET-PARAGRAPH                  SHEET HELP_TEXT
  call HotpopMap('nmap', '',          '<leader>?',    ':call HotpopShow()<CR>', 'Hotmap',                  'Open this popup...')
  call HotpopMap('map',  '',          '<leader>d',  ':set background=dark<cr>', "Colors",           "Change to dark background")
  call HotpopMap('map',  '',          '<leader>l', ':set background=light<cr>', "Colors",          "Change to light background")
  call HotpopMap('map',  '',          '<leader>b',              ':Buffers<cr>', 'FZF',                  'FZF with open buffers')
  call HotpopMap('map',  '',          '<leader>f',                ':Files<cr>', 'FZF',    'FZF with files in current directory')   

I then :source % and :PlugInstall.

When I :call HotpopShow() I get:

Error detected while processing function HotpopShow:                                                                                                 
line   17:
E117: Unknown function: popup_create
E15: Invalid expression: popup_create(rows, #{ title: ' My Mappings ', minwidth: 70, maxheight: 30, padding: [1,2,1,2], border: [], filter: function('s:popu
p_filter'), close: 'click' })

:checkhealth:

  health#coc#check
  ========================================================================
    - OK: Environment check passed
  
    - OK: Javascript bundle build/index.js found
    - OK: Service started
  
  health#coc_fzf#check
  ========================================================================
  ## ctags (optional)
    - OK: ctag found
  
  ## fzf.vim (optional)
    - OK: fzf.vim found
  
  health#nvim#check
  ========================================================================
  ## Configuration
    - OK: no issues found
  
  ## Performance
    - OK: Build type: RelWithDebInfo
  
  ## Remote Plugins
    - OK: Up to date
  
  ## terminal
    - INFO: key_backspace (kbs) terminfo entry: key_backspace=^H
    - INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~
    - INFO: $TERM_PROGRAM='Apple_Terminal'
  
  health#provider#check
  ========================================================================
  ## Clipboard (optional)
    - OK: Clipboard tool found: pbcopy
  
  ## Python 2 provider (optional)
    - WARNING: No Python executable found that can `import neovim`. Using the first available executable for diagnostics.
    - ERROR: Python provider error:
      - ADVICE:
        - provider/pythonx: Could not load Python 2:
            /usr/bin/python2 does not have the "neovim" module. :help provider-python
            /usr/bin/python2.7 does not have the "neovim" module. :help provider-python
            python2.6 not found in search path or not executable.
            /usr/bin/python does not have the "neovim" module. :help provider-python
    - INFO: Executable: Not found
  
  ## Python 3 provider (optional)
    - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
    - INFO: Multiple python3 executables found.  Set `g:python3_host_prog` to avoid surprises.
    - INFO: Executable: /usr/local/bin/python3
    - INFO: Other python executable: /usr/bin/python3
    - INFO: Python version: 3.9.1
    - INFO: pynvim version: 0.4.2
    - OK: Latest pynvim is installed.
  
  ## Python virtualenv
    - OK: no $VIRTUAL_ENV
  
  ## Ruby provider (optional)
    - INFO: Ruby: ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin20]
    - INFO: Host: /usr/local/bin/neovim-ruby-host
    - OK: Latest "neovim" gem is installed: 0.8.1
  
  ## Node.js provider (optional)
    - INFO: Node.js: v15.5.1
    - INFO: Nvim node.js host: /usr/local/lib/node_modules/neovim/bin/cli.js
    - OK: Latest "neovim" npm/yarn package is installed: 4.9.0
  
  ## Perl provider (optional)
    - ERROR: perl provider error:
      - ADVICE:
        - "Neovim::Ext" cpan module is not installed

on MASTER Neovim updated yesterday.

Help :-)

[mipmip]

I'm afraid it doesn't work on Neovim yet. I'll try to add nvim compatibility soon.