--- a/macros.xml	Wed Dec 25 12:33:33 2019 -0500
+++ b/macros.xml	Fri Feb 05 19:29:03 2021 +0000
@@ -436,11 +436,19 @@
 #end if
   </token>
 
+  <xml name="macro_include_exclude_validate_sanitize">
+    <validator type="expression" message="Single quote or trailing backslash not allowed">"'" not in value and value[-1] != "\\"</validator>
+    <sanitizer>
+      <valid initial="string.ascii_letters,string.digits,string.whitespace,string.punctuation">
+        <remove value="@" />
+        <remove value="'" />
+      </valid>
+    </sanitizer>
+  </xml>
 
   <xml name="macro_include">
     <param argument="--include" type="text" optional="true" label="Include" help="Select sites for which the expression is true">
-        <validator type="regex" message="Single quote not allowed">^[^']*$</validator>
-        <sanitizer sanitize="False"/>
+      <expand macro="macro_include_exclude_validate_sanitize" />
     </param>
   </xml>
   <token name="@INCLUDE@">
@@ -448,11 +456,10 @@
   --include '${section.include}'
 #end if
   </token>
-
+  
   <xml name="macro_exclude">
     <param argument="--exclude" type="text" optional="true" label="Exclude" help="Exclude sites for which the expression is true">
-        <validator type="regex" message="Single quote not allowed">^[^']*$</validator>
-        <sanitizer sanitize="False"/>
+      <expand macro="macro_include_exclude_validate_sanitize" />
     </param>
   </xml>
   <token name="@EXCLUDE@">