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Subject: Possible pattern versus non-pattern example
Greetings! I have one possible example of the use of a pattern versus a non-pattern for values. Consider the following: <define name="cellAddress"> <data type="string"> <param name="pattern">($?([^\. ']+|'[^']+'))?\.$?[A-Z]+$?[0-9]+</param> </data> </define> <define name="cellRangeAddress"> <data type="string"> <param name="pattern">($?([^\. ']+|'[^']+'))?\.$?[A-Z]+$?[0-9]+(:($?([^\. ']+|'[^']+'))?\.$?[A-Z]+$?[0-9]+)?</param> </data> </define> <define name="cellRangeAddressList"> <!-- Value is a space separated list of "cellRangeAddress" patterns --> <data type="string"/> </define> I am waiting for a reply on this example but to be quite honest, I don't think cellRangeAddressList is adequately defined from the standpoint of XML validation. It really should be specified as a space delimited list, however allowing for a list to consist of a single cellRangeAddress (in which case there would be no trailing space). From memory: ((($?([^\. ']+|'[^']+'))?\.$?[A-Z]+$?[0-9]+(:($?([^\. ']+|'[^']+'))?\.$?[A-Z]+$?[0-9]+)?)\s)+ Note that I am uncertain about the added syntax. Is a cellRangeAddressList always more than one cellRangeAddress or is it possible to have a list with only one item? Whether this and similar values triggered the comment or not remains to be seen. But, in any event, I will isolate all of the examples of this particular practice as it is something that should be fixed in ODF 1.2. There may be a pattern to using <data type="string"/> when what is mean is a space delimited list of some sort. In other words, there may be other cases where patterns were not used consistently so I don't want to focus too narrowly on this example at the expense of not uncovering other inconsistent use of patterns. This should not affect backwards compatibility since any application actually using cellAddressRangeList would have to implement the equivalent of the regex (or something close thereto) in order to have this sort of list. Hope everyone is at the start of a great week! Patrick PS: In the current specification, see 8.3.1 Referencing Table Cells for the material quoted herein. -- Patrick Durusau Patrick@Durusau.net Chair, V1 - Text Processing: Office and Publishing Systems Interface Co-Editor, ISO 13250, Topic Maps -- Reference Model Member, Text Encoding Initiative Board of Directors, 2003-2005 Topic Maps: Human, not artificial, intelligence at work!
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