Allow suffix letter after the numbers in page range

CHANGELOG.md

@@ -41,6 +41,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 
 ### Fixed
 
+- We fixed pages checker to allow suffix letters in the page range like "436S-439S". [#13701](https://github.com/JabRef/jabref/issues/13701)
 - We fixed an issue where the Web search table had extra space, to improve the layout. [#14556](https://github.com/JabRef/jabref/issues/14556)
 - We fixed an issue where the side pane (Groups/Web search) width was not remembered after restarting JabRef. [#8907](https://github.com/JabRef/jabref/issues/8907)
 - We fixed the ScienceDirect fulltext fetcher not returning a PDF when the Elsevier API response includes a direct PDF link. [#12161](https://github.com/JabRef/jabref/issues/12161)

jablib/src/main/java/org/jabref/logic/integrity/PagesChecker.java

@@ -11,7 +11,7 @@
 
 public class PagesChecker implements ValueChecker {
 
-    private static final String SINGLE_PAGE_PATTERN = "[A-Za-z]?\\d*";             // optional prefix and number
+    private static final String SINGLE_PAGE_PATTERN = "[A-Za-z]?\\d*[A-Za-z]?";    // optional prefix, numbers, and optional suffix
     private static final String BIBTEX_RANGE_SEPARATOR = "(\\+|-{2}|\u2013)";      // separator, must contain exactly two dashes
     private static final String BIBLATEX_RANGE_SEPARATOR = "(\\+|-{1,2}|\u2013)";  // separator
 

jablib/src/test/java/org/jabref/logic/integrity/PagesCheckerBiblatexTest.java

@@ -39,7 +39,9 @@ public static Stream<String> bibtexAccepts() {
                 // bibTexAcceptsNoSimpleRangeOfNumbers
                 "43+",
                 // bibTexAcceptsMorePageNumbersWithRangeOfNumbers
-                "7+,41--43,73"
+                "7+,41--43,73",
+                // suffix
+                "436S-439S"
         );
     }
 
@@ -56,7 +58,9 @@ public static Stream<String> bibtexRejects() {
                 // bibTexDoesNotAcceptMorePageNumbersWithoutComma
                 "1 2",
                 // bibTexDoesNotAcceptBrackets
-                "{1}-{2}"
+                "{1}-{2}",
+                // More than one suffix forbidden
+                "436SS-439S"
         );
     }
 

jablib/src/test/java/org/jabref/logic/integrity/PagesCheckerBibtexTest.java

@@ -37,7 +37,9 @@ public static Stream<String> bibtexAccepts() {
                 // bibTexAcceptsNoSimpleRangeOfNumbers
                 "43+",
                 // bibTexAcceptsMorePageNumbersWithRangeOfNumbers
-                "7+,41--43,73"
+                "7+,41--43,73",
+                // suffix
+                "436S--439S"
         );
     }
 
@@ -56,7 +58,9 @@ public static Stream<String> bibtexRejects() {
                 // bibTexDoesNotAcceptMorePageNumbersWithoutComma
                 "1 2",
                 // bibTexDoesNotAcceptBrackets
-                "{1}-{2}"
+                "{1}-{2}",
+                // single dash forbidden
+                "436S-439S"
         );
     }