runtime(vim): fix indentation after :registers +

closes: #18528

Signed-off-by: lacygoill <lacygoill@lacygoill.me>
Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: lacygoill

runtime/autoload/dist/vimindent.vim

@@ -2,7 +2,7 @@ vim9script
 
 # Language:     Vim script
 # Maintainer:   github user lacygoill
-# Last Change:  2025 Sep 11
+# Last Change:  2025 Oct 09
 #
 # Includes changes from The Vim Project:
 
@@ -341,7 +341,8 @@ const PLUS_MINUS_COMMAND: string = '^\s*[+-]\s*$'
 patterns =<< trim eval END
     {'\'}<argd\%[elete]\s\+\*\s*$
     \<[lt]\=cd!\=\s\+-\s*$
-    \<norm\%[al]!\=\s*\S\+$
+    \<norm\%[al]!\=\s\+.*$
+    \<reg\%[isters]\%(\s\+\S\+\)\+$
     \%(\<sil\%[ent]!\=\s\+\)\=\<[nvxsoilct]\=\%(nore\|un\)\=map!\=\s
     \<set\%(\%[global]\|\%[local]\)\>.*,$
     {PLUS_MINUS_COMMAND}

runtime/indent/testdir/vim.in

@@ -218,3 +218,8 @@ endif
 set path=.,,
 set clipboard=unnamed,unnamedplus
 " END_INDENT
+
+" START_INDENT
+registers +
+echo 'text'
+" END_INDENT

runtime/indent/testdir/vim.ok

@@ -218,3 +218,8 @@ endif
 set path=.,,
 set clipboard=unnamed,unnamedplus
 " END_INDENT
+
+" START_INDENT
+registers +
+echo 'text'
+" END_INDENT