RE: RE: Formatting Processing Instructions
Rick sayeth: "what PIs allow is a separation of concerns that reduces coordination effort" I opened an IADS document recently and discovered that in contrast to the fairly clean element/attribute coding of twenty years ago, it contained all processing instructions. I didn't investigate further but it made me think that Greg Geis finally tired of the SGML/XML wrangling and commiteeizing, freaked out and went with the one bit of markup that no one can argue about very well because they are invisible to the committee members taught to never look at them. Whatever else can be said about PIs, they aren't used for sharable items, and therefore, aren't arguable outside the local cube farm. len -----Original Message----- From: Rick Jelliffe [mailto:firstname.lastname@example.org] Sent: Thursday, March 01, 2012 4:54 PM To: email@example.com Subject: Re: RE: Formatting Processing Instructions We had a different use of PIs. We are testing transformations, and so we could that the output has the same number of text nodes as the input. But the output untags many pieces of text. So we replaced stripped tags with PIs, thus maintaining the text node boundaries and allowing the count. We could also use XML comments for this, but IIRC we use comments for other things. So we could use XML comments and then add some signature string at the start of the comment value to distinguish the different kinds of comments. But why go to the trouble when XML already provides a second kind of free tag (i,e, PIs). I guess from a software engineering perspective, what PIs allow is a separation of concerns that reduces coordination effort: in the case above, we have a thorough but heavyweight schema development regime, so the requirements of testers could be accommodated by developers without needing to go to back to analysts and schema developers nor forward to presentation developers. Cheers Rick _______________________________________________________________________ XML-DEV is a publicly archived, unmoderated list hosted by OASIS to support XML implementation and development. To minimize spam in the archives, you must subscribe before posting. [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ Or unsubscribe: firstname.lastname@example.org subscribe: email@example.com List archive: http://lists.xml.org/archives/xml-dev/ List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
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