Initial vi(m).shiar.* locations should always give a permanent redirect
to the preferred sheet.shiar.nl (/vi unless specified otherwise).
RewriteEngine on
RewriteBase /
RewriteEngine on
RewriteBase /
+# redirect from old vim-only subdomain
+RewriteCond %{HTTP_HOST} ^vim?\.shiar\.\w+$
+RewriteRule ^(vi(?=m$)|.*) http://sheet.shiar.nl/$1 [R=301]
+
# redirect old location
RewriteRule ^vim$ /vi [R=301]
# redirect old location
RewriteRule ^vim$ /vi [R=301]