[form] fix #719285, due to multiple calls to restore_previous_post, by proper refactorings * move __init__ code from FieldsForm to Form. Must behaviour here should actually be in the Form base class * avoid buggy duplicated call to restore_previous_post * move some code that was in the form renderer to the form'__init__ method (__redirectpath & __form_id hidden input handling)) * 'formvid' should now be specified on form selection, not on form rendering

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.. winclude:: search_sample_queries

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You can as well type complex queries using the RQL_ query language, 

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used every where to build dynamic pages of this site.

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You can use one of the following prefixes to specify which kind of search you

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want: 

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* `rql` : RQL query

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* `text` : full text search

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.. _RQL: doc/tut_rql