How to rewrite the url when submitting a form using the GET method?

Question

Apache HTTP Server

There may be another way to change the query string, but it's not obvious to me. It is necessary to redirect to the
request when requesting . The following rules cause a circular redirect.
/?q=поисковой%20запрос
/search/поисковой%20запрос

RewriteCond %{QUERY_STRING} ^q=(.*)$ [NC]
RewriteRule ^/* /search/%1? [NC,L,R=301]

RewriteRule ^search/(.*)$ index.php?q=$1 [L,QSA]

Answer 1

RewriteCond %{QUERY_STRING} (^|&)q=поисковой%20запрос($|&)
RewriteRule ^domen\.ru/$ /domen.ru/search/поисковой%20запрос? [L,R=301]