1243 2005-04-12 19:43:15 +0000 [F&O] fn:escape-uri needs to be invertible in the true() case; take out the % exception 2005-09-29 10:40:50 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Functions and Operators 1.0 Last Call drafts PC Linux CLOSED FIXED http://lists.w3.org/Archives/Public/public-qt-comments/2005Apr/0057.html P2 normal --- 1 cmsmcq ashok.malhotra connolly public-qt-comments oldest_to_newest 3730 0 cmsmcq 2005-04-12 19:43:15 +0000 [posted in Bugzilla by cmsmcqW3.org on behalf of Dan Connolly; text below is copied from his note to qt-comments.] Regarding... "Generally, $escape-reserved should be set to true when escaping a string that is to form a single part of a URI, and to false when escaping an entire URI or URI reference." http://www.w3.org/TR/2005/WD-xpath-functions-20050404/#func-escape-uri Indeed, those are the two relevant tasks. I might prefer separate functions, as the tasks are quite unrelated. In any case, the exception for the % character makes this function unsuitable for the task of "form[ing] a single part of a URI". As specified, fn:escape-uri("gross %each") returns "gross%20%each" but that doesn't actually encode the string "gross %each" into part of a URI such that the party that encoded it can decode it again. In order to be useful, it needs to return 'gross%20%25each' . It needs to be invertible. i.e. XQuery should follow all the other programming languages out there, such as - python http://docs.python.org/lib/module-urllib.html >>> urllib.quote("gross %each") 'gross%20%25each' - perl perl -e 'use URI::Escape; print uri_escape("gross %each"), "\n"' gross%20%25each http://www.gsp.com/cgi-bin/man.cgi?section=3&topic=URI::Escape - javascript http://www.javascripter.net/faq/escape.htm I can't find the standard library functions for Java and C# with a few minutes of googling, but I'll bet they work likewise. p.s. yes, this is essentially the same comment I made back in 2003. http://lists.w3.org/Archives/Public/uri/2003Mar/0027.html 3443 1 ashok.malhotra 2005-05-10 18:21:21 +0000 On the 5-10-05 telcon the joint WGs confirmed the decision taken during mtg 252 re. fn:escape-uri. Essentially, this decision was 1 remove the the percent-sign (%) from the list of characters not to be escaped when the "escape-reserved" argument had the value "true". 2 add the percent-sign to the list of characters not escaped when "escape-reserved" argument had the value "false This means that the percent-sign is escaped when escape-reserved is "true" and not escaped when escape-reserved is "false". Please confirm that this is what was intended and that it resolves the problem.