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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.shibboleth.net/jira/browse/MDA" style="color: #3b73af; text-decoration: none">Metadata Aggregator</a> / <a href="https://issues.shibboleth.net/jira/browse/MDA-213" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-864f515b-a8dc-4235-afbe-7b2a067a6af2" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"></a> <a href="https://issues.shibboleth.net/jira/browse/MDA-213" style="color: #3b73af; text-decoration: none">MDA-213</a> </td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.shibboleth.net/jira/browse/MDA-213" style="color: #3b73af; text-decoration: none">WhitespaceTrimmingVisitor should trim all Unicode whitespace</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Issue Type:</th>
<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-864f515b-a8dc-4235-afbe-7b2a067a6af2" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"> Improvement </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 0.9.2 </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Assignee:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="ian@iay.org.uk" id="email_ian@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=ian%40iay.org.uk" style="color:#0052cc;; color: #3b73af; text-decoration: none">Ian Young</a> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Components:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> DOM Metadata </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 06/Dec/18 12:24 PM </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Fix Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 1.0.0 </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Priority:</th>
<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-major-4c0411f7-6be0-451d-888b-9995b48bc82e" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Reporter:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="ian@iay.org.uk" id="email_ian@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=ian%40iay.org.uk" style="color:#0052cc;; color: #3b73af; text-decoration: none">Ian Young</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">The <tt>WhitespaceTrimmingVisitor</tt> is used to remove whitespace from the beginning and end of XML elements and attributes.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The current implementation uses the Java <tt>String#trim</tt> method, which is defined to remove characters whose character codes are 0x20 or less. This doesn't exactly match the definition of white space either in XML 1.0 (where whitespace is any of SPC, TAB, CR and LF) or XML 1.1 (which adds NEL (U+0085) and Unicode line separator (U+2028).</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">You might think that Java 11's <tt>String#strip</tt> would be the solution, but its definition is in terms of <tt>Character.isWhiteSpace</tt>, which includes a few more control characters. It might nevertheless be an improvement in reaching the original intent of this class.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Investigate and figure out which to use. A change to use <tt>String#strip</tt> would have to wait for a version of the MDA which required Java 11. The current intention is that this should be true for 1.0, but it may also be true for 0.10, depending on how that comes about.</p> </td>
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