Index: openacs-4/packages/acs-templating/tcl/widget-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/tcl/widget-procs.tcl,v
diff -u -r1.63.2.2 -r1.63.2.3
--- openacs-4/packages/acs-templating/tcl/widget-procs.tcl	29 Mar 2019 12:47:29 -0000	1.63.2.2
+++ openacs-4/packages/acs-templating/tcl/widget-procs.tcl	5 Jul 2019 10:00:54 -0000	1.63.2.3
@@ -482,7 +482,17 @@
 
     upvar $element_reference element
 
-    return [input file element $tag_attributes]
+    array set attributes $tag_attributes
+
+    #
+    # If the multiple flag is set for the element, we allow more than one file
+    # in the widget, by using the HTML5 'multiple' attribute of the 'input' tag
+    #
+    if { [info exists element(multiple)] } {
+        set attributes(multiple) {}
+    }
+
+    return [input file element [array get attributes]]
 }