runtime(tutor): improve tutor.vim plugin and filetype plugin
- Set g:tutor_debug on startup if it doesn't exist so that users can get
cmdline completion when interactively setting it.
- set b:undo_ftplugin in filetype plugin
- set default runtime file headers
closes: #17274
Signed-off-by: Phạm Bình An <phambinhanctb2004@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/ftplugin/tutor.vim b/runtime/ftplugin/tutor.vim
index 30783d9..5660cbf 100644
--- a/runtime/ftplugin/tutor.vim
+++ b/runtime/ftplugin/tutor.vim
@@ -1,4 +1,11 @@
-" vim: fdm=marker
+" Tutor filetype plugin
+" Language: Tutor (the new tutor plugin)
+" Maintainer: This runtime file is looking for a new maintainer.
+" Last Change: 2025 May 10
+" Contributors: Phạm Bình An <phambinhanctb2004@gmail.com>
+" Original Author: Felipe Morales <hel.sheep@gmail.com>
+" Last Change:
+" 2025 May 10 set b:undo_ftplugin
" Base: {{{1
call tutor#SetupVim()
@@ -43,3 +50,10 @@
call tutor#ApplyMarks()
autocmd! TextChanged,TextChangedI <buffer> call tutor#ApplyMarksOnChanged()
endif
+
+let b:undo_ftplugin = 'unlet! g:tutor_debug |'
+let b:undo_ftplugin ..= 'setl concealcursor< conceallevel< |'
+let b:undo_ftplugin ..= 'setl foldmethod< foldexpr< foldlevel< |'
+let b:undo_ftplugin ..= 'setl buftype< undofile< keywordprg< iskeyword< |'
+
+" vim: fdm=marker