oxy_lastindexof() Function
      
      The oxy_lastindexof() function has two signatures:
         
- 
               
               oxy_lastindexof( text , toFind)Returns the index within text string of the rightmost occurrence of the toFind substring. - text
- Text to search in.
- toFind
- The searched substring.
 
- 
               
               oxy_lastindexof( text , toFind , fromOffset )The search starts from fromOffset index. Returns the index within text string of the last occurrence of the toFind substring, searching backwards starting from the fromOffset index. - text
- Text to search in.
- toFind
- The searched substring.
- fromOffset
- The index to start the search backwards from.
 
oxy_lastindexof('abcdbc', 'bc') returns 4.
            
oxy_lastindexof('abcdbccdbc', 'bc', 2) returns 1.
            
If we only want to display part of an attribute value, the part that comes before an Appendix string:
image[longdesc]{
 content: oxy_substring(attr(longdesc), 0, 
          oxy_lastindexof(attr(longdesc), "Appendix"));
}
            
         