Most mentioned links:MMBase documentation
MMBase Taglib reference
The reference for all tags mm
There are several tags in the mmbase taglib in which you can use regular expressions. Really helpful to filter for unwanted html-tags, like for example whether a richtext editor has included paragraph tags in your text.
Regular expressions can be used in <mm:compare /> and <mm:escaper />. This example checks for a paragraph tag at the beginning. When it finds one it does nothing. When it does not it adds one at the end and the beginning: the second <mm:compare /> inverses the pattern with the attribute 'inverse="true"'.
<mm:node number="a.news.article"> <mm:field name="body"> <mm:compare regexp="^<p>.*"><mm:write /></mm:compare> <mm:compare regexp="^<p>.*" inverse="true">
</mm:compare> </mm:field> </mm:node>
The regular expression syntax used in the mmbase taglib is the one included in Java and is very simmular to regex in Perl.
The <mm:escaper /> tag can combine several regular expression patterns after another. The taglib documentation shows an example.
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