helenp - 10:26 am on Jan 15, 2013 (gmt 0)

Conditions apply only to the next rule that follows. You need the port test in some form or other ("is 443" or "is not 443") before every rule. Add a blank line after each rule to make the code more readable.

Puf, I have changed it to this and it gives the same result, redirects http to https on the third level when writing index.htm
# Redirect index.html and .htm to folder
RewriteRule !index\.html? - [S=2]
RewriteCond %{SERVER_PORT} !^443$
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /([^/]+/)*index\.html?\ HTTP/
RewriteRule ^(([^/]+/)*)index\.html?$ http://www.example.com/$1 [R=301,L]

RewriteCond %{SERVER_PORT} ^443$
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /([^/]+/)*index\.html?\ HTTP/
RewriteRule ^(([^/]+/)*)index\.html?$ https://www.example.com/$1 [R=301,L]

# Redirect non-canonical to www
RewriteCond %{SERVER_PORT} !^443$
RewriteCond %{HTTP_HOST} !^(www\.example\.com)?$
RewriteRule (.*) http://www.example.com/$1 [R=301,L]

RewriteCond %{SERVER_PORT} ^443$
RewriteCond %{HTTP_HOST} !^(www\.example\.com)?$
RewriteRule (.*) https://www.example.com/$1 [R=301,L]