RewriteCond %{DOCUMENT_ROOT}/doc/manuals/debian-reference/ch-support$1 !-f
RewriteRule ^/doc/manuals/debian-reference/ch-support(.*) /support$1 [L,R=301]
RewriteCond %{DOCUMENT_ROOT}/doc/manuals/debian-reference/${reference:$1}$2 -f
RewriteCond %{DOCUMENT_ROOT}/doc/manuals/debian-reference/ch-support$1 !-f
RewriteRule ^/doc/manuals/debian-reference/ch-support(.*) /support$1 [L,R=301]
RewriteCond %{DOCUMENT_ROOT}/doc/manuals/debian-reference/${reference:$1}$2 -f