ftplugin(python): E16 fix, async keyword support for define (#14751)

This change includes the following changes:
- Fix "E16: Invalid range" when using a count with jump to start/end of class/method
- Update define with optional async keyword
- Update maintainer email

Signed-off-by: Tom Picton <tom@tompicton.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/ftplugin/python.vim

@@ -1,10 +1,9 @@
 " Vim filetype plugin file
 " Language:	python
-" Maintainer:	Tom Picton <tom@tompicton.co.uk>
+" Maintainer:	Tom Picton <tom@tompicton.com>
 " Previous Maintainer: James Sully <sullyj3@gmail.com>
 " Previous Maintainer: Johannes Zellner <johannes@zellner.org>
-" Last Change:	Mon, 5 October 2020
-"		2024 Jan 14 by Vim Project (browsefilter)
+" Last Change:	2024/05/11
 " https://github.com/tpict/vim-ftplugin-python
 
 if exists("b:did_ftplugin") | finish | endif
@@ -15,7 +14,7 @@ set cpo&vim
 setlocal cinkeys-=0#
 setlocal indentkeys-=0#
 setlocal include=^\\s*\\(from\\\|import\\)
-setlocal define=^\\s*\\(def\\\|class\\)
+setlocal define=^\\s*\\([async ]\\?def\\\|class\\)
 
 " For imports with leading .., append / and replace additional .s with ../
 let b:grandparent_match = '^\(.\.\)\(\.*\)'
@@ -57,14 +56,14 @@ let b:next_end='\v\S\n*(%$\|^(\s*\n*)*(class\|def\|async def)\|^\S)'
 let b:prev_end='\v\S\n*(^(\s*\n*)*(class\|def\|async def)\|^\S)'
 
 if !exists('g:no_plugin_maps') && !exists('g:no_python_maps')
-    execute "nnoremap <silent> <buffer> ]] :call <SID>Python_jump('n', '". b:next_toplevel."', 'W', v:count1)<cr>"
-    execute "nnoremap <silent> <buffer> [[ :call <SID>Python_jump('n', '". b:prev_toplevel."', 'Wb', v:count1)<cr>"
-    execute "nnoremap <silent> <buffer> ][ :call <SID>Python_jump('n', '". b:next_endtoplevel."', 'W', v:count1, 0)<cr>"
-    execute "nnoremap <silent> <buffer> [] :call <SID>Python_jump('n', '". b:prev_endtoplevel."', 'Wb', v:count1, 0)<cr>"
-    execute "nnoremap <silent> <buffer> ]m :call <SID>Python_jump('n', '". b:next."', 'W', v:count1)<cr>"
-    execute "nnoremap <silent> <buffer> [m :call <SID>Python_jump('n', '". b:prev."', 'Wb', v:count1)<cr>"
-    execute "nnoremap <silent> <buffer> ]M :call <SID>Python_jump('n', '". b:next_end."', 'W', v:count1, 0)<cr>"
-    execute "nnoremap <silent> <buffer> [M :call <SID>Python_jump('n', '". b:prev_end."', 'Wb', v:count1, 0)<cr>"
+    execute "nnoremap <silent> <buffer> ]] :<C-U>call <SID>Python_jump('n', '". b:next_toplevel."', 'W', v:count1)<cr>"
+    execute "nnoremap <silent> <buffer> [[ :<C-U>call <SID>Python_jump('n', '". b:prev_toplevel."', 'Wb', v:count1)<cr>"
+    execute "nnoremap <silent> <buffer> ][ :<C-U>call <SID>Python_jump('n', '". b:next_endtoplevel."', 'W', v:count1, 0)<cr>"
+    execute "nnoremap <silent> <buffer> [] :<C-U>call <SID>Python_jump('n', '". b:prev_endtoplevel."', 'Wb', v:count1, 0)<cr>"
+    execute "nnoremap <silent> <buffer> ]m :<C-U>call <SID>Python_jump('n', '". b:next."', 'W', v:count1)<cr>"
+    execute "nnoremap <silent> <buffer> [m :<C-U>call <SID>Python_jump('n', '". b:prev."', 'Wb', v:count1)<cr>"
+    execute "nnoremap <silent> <buffer> ]M :<C-U>call <SID>Python_jump('n', '". b:next_end."', 'W', v:count1, 0)<cr>"
+    execute "nnoremap <silent> <buffer> [M :<C-U>call <SID>Python_jump('n', '". b:prev_end."', 'Wb', v:count1, 0)<cr>"
 
     execute "onoremap <silent> <buffer> ]] :call <SID>Python_jump('o', '". b:next_toplevel."', 'W', v:count1)<cr>"
     execute "onoremap <silent> <buffer> [[ :call <SID>Python_jump('o', '". b:prev_toplevel."', 'Wb', v:count1)<cr>"