https://User:password@svn.domain.com
https://USER@svn.domain.com
svn://useR:password@svn.domain.com/Repo/Trunk/BIN/
svn://svn.domain.com/Repo/Trunk/BIN/

https://user:password@svn.domain.com
https://user@svn.domain.com
svn://user:password@svn.domain.com/Repo/Trunk/BIN/
svn://svn.domain.com/Repo/Trunk/BIN/

<form action='/csvn/j_spring_security_check' method='POST' id='loginForm'>
 <input type='text' class='text_' name='j_username' id='j_username' value='' />
 <input type='password' class='text_' name='j_password' id='j_password' />
 <input type='submit' value='Login' class="Button"/>
</form>

RewriteEngine On
RewriteMap  lc int:tolower
RewriteCond %{REQUEST_URI} ([a-zA-Z0-9]+):([a-zA-Z0-9]+)@svn.domain.com(.*) [OR]
RewriteCond %{REQUEST_URI} svn.domain.com/(.+)
RewriteRule (.*) ${lc:$1} [R=301,L]

# Trace:
# (!) file gets big quickly, remove in prod environments:
RewriteLog "/web/logs/mywebsite.rewrite.log"
RewriteLogLevel 9
RewriteEngine On

Authorization: Basic <base64_usr_pwd>

PerlHeaderParserHandler MyApache2::ConvertUsrToLowercase