Summarize tei:hi that belong together (cf. print#64)

modules/fontane/teisimpleprint/tidysimple.xqm

@@ -35,6 +35,7 @@ declare function tidySimple:main($tei as node()*) {
     let $tidy := tidySimple:sort-out-invalid-hands($tei//tei:text) 
         => tidySimple:sort-out-surplus-elements()
         => tidySimple:whitespaces()
+        => tidySimple:summarize-entries()
         => tidySimple:split-headings()
 (:        => tidySimple:sort():)
 (:    let $text-with-sections := tidySimple:make-structure($clear-surplus-hands):)
@@ -184,6 +185,8 @@ declare function tidySimple:copy-element($node as node(), $flag as xs:string)
             tidySimple:sort-out-invalid-hands($node/node())        
         else if($flag = "surplus") then
             tidySimple:sort-out-invalid-hands($node/node())        
+        else if($flag = "summarize") then
+            tidySimple:summarize-entries($node/node())
         else
             tidySimple:tidy($node/node())
     }
@@ -399,3 +402,30 @@ declare function tidySimple:split-headings($nodes as node()*) as node()* {
                     tidySimple:split-headings($node/node())
             }
 };
+
+declare function tidySimple:summarize-entries($nodes as node()*) as node()* {
+    for $node in $nodes return
+        typeswitch ($node)
+        
+        case text() return
+            $node
+        
+        case element(tei:hi) return
+            if($node[@next]) then
+                let $this-content := $node/child::text()
+                let $next-content := $node/following-sibling::tei:hi[1]/child::text()
+                let $break := if($node/@break = "true") then text{" "} else ()
+                let $content := ($this-content, $break, $next-content)
+                
+                return
+                    element {QName("http://www.tei-c.org/ns/1.0", "hi")} {
+                        $content
+                    }
+            else if($node[@prev]) then
+                ()
+            else
+                 tidySimple:copy-element($node, "summarize")
+                 
+        default return
+            tidySimple:copy-element($node, "summarize")
+};
\ No newline at end of file