How to Use ProxyMatch or ProxyPassMatch with Regex for mapping multiple Context paths

If you put ProxyPassMatch iside a LocationMatch section, the first argument to ProxyPassMatch (regex) must be omitted. It will come from LocationMatch. Example from my (working) configuration:

<VirtualHost *:80>ServerName gopal.lvServerAlias gopal.lv www.gopal.lvProxyPreserveHost On<LocationMatch "^/(img|js|css|att|thumb|banner)/(.+)$">#Note: only 1 argument hereProxyPassMatch "http://192.168.1.11/$1/$2"</LocationMatch>#Note we have 2 arguments hereProxyPassMatch "^/(img|js|css|att|thumb|banner)/(.+)$" "http://192.168.1.11/$1/$2"ProxyPass / http://192.168.1.12/</VirtualHost>

Otherwise, you get the error

ERROR: "Invalid ProxyPass|ProxyPassMatch parameter. Parameter must be in the form 'key=value'"

It is documented here: https://httpd.apache.org/docs/trunk/mod/mod_proxy.html#proxypass

Always use separate lines for comments, and quote the string arguments.There where bug regathering this thing in their bugzila, but I believe you are not using an old version.https://bz.apache.org/bugzilla/show_bug.cgi?id=40439

<LocationMatch "^/(ae/en|ar/en|ar/es|at/en|au/en|be/en|br/en)/">Order Allow,DenyAllow from all#should keep varying as per the regex matched in location matchProxyPass "http://www.xyz.com.au:80/au/en/"#should keep varying as per the regex matched in location matchProxyReverse "http://www.xyz.com.au:80/au/en/" </LocationMatch>

ERROR: "Invalid ProxyPass|ProxyPassMatch parameter. Parameter must be in the form 'key=value'"

This may occur if you have e.g. used RewriteUrl-flags at the end of your Proxy-directive.