Use a subdirectory as root with htaccess in Apache 1.3

Finally got it, after a week of trying. RewriteRules really are voodoo…

RewriteEngine On

# Map http://www.example.com to /jekyll.
RewriteRule ^$ /jekyll/ [L]

# Map http://www.example.com/x to /jekyll/x unless there is a x in the web root.
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !^/jekyll/
RewriteRule ^(.*)$ /jekyll/$1

# Add trailing slash to directories within jekyll
# This does not expose the internal URL.
RewriteCond %{SCRIPT_FILENAME} -d
RewriteRule ^jekyll/(.*[^/])$ http://www.example.com/$1/ [R=301]

No need for DirectorySlash. It magically all works.

You can simply use:

RewriteBase   /jekyll

And everything starts from that point.