Fix #2257.

Author: sydb

P5/Source/Specs/att.datable.xml

@@ -43,9 +43,9 @@ $Id$
       <constraintSpec ident="calendar" scheme="schematron">
         <constraint>
           <sch:rule context="tei:*[@calendar]">
-            <sch:assert test="string-length(.) gt 0"> @calendar indicates one or more systems or calendars to
-              which the date represented by the content of this element belongs, but this
-              <sch:name/> element has no textual content.</sch:assert>
+            <sch:assert test="string-length( normalize-space(.) ) gt 0"> @calendar indicates one or more
+            systems or calendars to which the date represented by the content of this element belongs,
+            but this <sch:name/> element has no textual content.</sch:assert>
           </sch:rule>
         </constraint>
       </constraintSpec>
@@ -146,4 +146,4 @@ $Id$
     <ptr target="#CONADA"/>
     <ptr target="#NDDATE"/>
   </listRef>
-</classSpec>
+</classSpec>

P5/Test/expected-results/detest_xml_schematron.log

@@ -1,6 +1,6 @@
- @calendar indicates one or more systems or calendars to
-              which the date represented by the content of this element belongs, but this
-              date element has no textual content. (string-length(.) gt 0)
+ @calendar indicates one or more
+            systems or calendars to which the date represented by the content of this element belongs,
+            but this date element has no textual content. (string-length( normalize-space(.) ) gt 0)
 The abbr element should not be categorized in detail with @subtype unless also categorized in general with @type (@type)
 The div element should not be categorized in detail with @subtype unless also categorized in general with @type (@type)