fix vim9 script

vim9/autoload/banana.vim

@@ -11,26 +11,18 @@ endif
 g:autoloaded_Banana = 1
 
 export def Enc()
-	if line("'<") > 0
 	call ReplSel(Dec2Ban(GetSel()))
-	else
-		call EncLine()
-	endif
 enddef
 
-def EncLine()
+export def EncLine()
 	call setline('.', substitute(getline('.'), '\d\d*', '\=toupper(Doban(submatch(0)))', 'g'))
 enddef
 
 export def Dec()
-	if line("'<") > 0
 	call ReplSel(Ban2Dec(GetSel()))
-	else
-		call DecLine()
-	endif
 enddef
 
-def DecLine()
+export def DecLine()
 	call setline('.', substitute(getline('.'), '\C\u\u*', '\=Unban(tolower(submatch(0)))', 'g'))
 enddef
 
@@ -105,7 +97,7 @@ def ReplSel(str: string)
 	var new_str = slice(lines[0], 0, cstart - 1) .. str .. lines[-1][cend : ]
 	var new_str_lst = split(new_str, '\n')
 	call setline(lstart, new_str_lst)
-	delmarks < >
+	setcursorcharpos(lstart, cstart)
 enddef
 
 def Dec2Ban(text: string): string

vim9/plugin/banana.vim

@@ -21,9 +21,13 @@ endif
 
 import autoload 'banana.vim'
 
-noremap <silent> <unique> <script> <Plug>BananaEnc
+nnoremap <silent> <unique> <script> <Plug>BananaEnc
+			\ :call <SID>banana.EncLine()<CR>
+nnoremap <silent> <unique> <script> <Plug>BananaDec
+			\ :call <SID>banana.DecLine()<CR>
+vnoremap <silent> <unique> <script> <Plug>BananaEnc
 			\ :call <SID>banana.Enc()<CR>
-noremap <silent> <unique> <script> <Plug>BananaDec
+vnoremap <silent> <unique> <script> <Plug>BananaDec
 			\ :call <SID>banana.Dec()<CR>
 
 &cpo = keepcpo