diff --git a/pmd-swift/src/main/antlr4/net/sourceforge/pmd/lang/swift/antlr4/Swift.g4 b/pmd-swift/src/main/antlr4/net/sourceforge/pmd/lang/swift/antlr4/Swift.g4
index 01ee4ad84c..c71b5fbda7 100644
--- a/pmd-swift/src/main/antlr4/net/sourceforge/pmd/lang/swift/antlr4/Swift.g4
+++ b/pmd-swift/src/main/antlr4/net/sourceforge/pmd/lang/swift/antlr4/Swift.g4
@@ -1018,7 +1018,7 @@ ImplicitParameterName : '$' DecimalLiteral ; // TODO: don't allow '_' here
 // GRAMMAR OF A LITERAL
 
 booleanLiteral: BooleanLiteral ;
-literal : numericLiteral | MultiStringLiteral | SingleStringLiteral | BooleanLiteral | NilLiteral ;
+literal : numericLiteral | MultiStringLiteral | DashedSingleStringLiteral | SingleStringLiteral | BooleanLiteral | NilLiteral ;
 
 // GRAMMAR OF AN INTEGER LITERAL
 
@@ -1078,6 +1078,13 @@ fragment MultiQuotedTextItem : MultiInterpolatedString
  ;
 fragment MultiInterpolatedString: '\\(' (MultiQuotedTextItem | SingleStringLiteral)* ')';
 
+DashedSingleStringLiteral : '#"' DashedMultiQuotedText? '"#' ;
+fragment DashedMultiQuotedText : DashedMultiQuotedTextItem+ ;
+fragment DashedMultiQuotedTextItem : EscapedCharacter | DashedMultiInterpolatedString
+ | ~[\\\u000A\u000D]
+ ;
+fragment DashedMultiInterpolatedString: '\\#(' (DashedMultiQuotedTextItem | DashedSingleStringLiteral)* ')';
+
 // StringLiteral : '"' QuotedText? '"' ;
 SingleStringLiteral : '"' QuotedText? '"' ;
 fragment SingleDoubleQuote : '"' | ~["] ;
diff --git a/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.swift b/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.swift
index 6e77f1dd29..cf326c21c7 100644
--- a/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.swift
+++ b/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.swift
@@ -38,3 +38,11 @@ var x = 2
 print(x[keyPath: id]) // prints 2
 x[keyPath: id] = 3
 print(x[keyPath: id]) // prints 3
+
+// https://www.swiftbysundell.com/articles/string-literals-in-swift/
+let rawString = #"Press "Continue" to close this dialog."#
+extension URL {
+    func html(withTitle title: String) -> String {
+        return #"<a href="\#(absoluteString)">\#(title)</a>"#
+    }
+}
diff --git a/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.txt b/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.txt
index 5eaa13610c..0a89406a83 100644
--- a/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.txt
+++ b/pmd-swift/src/test/resources/net/sourceforge/pmd/lang/swift/cpd/testdata/Swift5.0.txt
@@ -197,4 +197,37 @@ L40
     [id]                                    18        19
     [\]]                                    20        20
     [)]                                     21        21
+L43
+    [let]                                   1         3
+    [rawString]                             5         13
+    [=]                                     15        15
+    [#"Press "Continue" to close this d[    17        58
+L44
+    [extension]                             1         9
+    [URL]                                   11        13
+    [{]                                     15        15
+L45
+    [func]                                  5         8
+    [html]                                  10        13
+    [(]                                     14        14
+    [withTitle]                             15        23
+    [title]                                 25        29
+    [:]                                     30        30
+    [String]                                32        37
+    [)]                                     38        38
+    [->]                                    40        41
+    [String]                                43        48
+    [{]                                     50        50
+L46
+    [return]                                9         14
+    [#"<a href="\\#(absoluteString)">\\[    16        61
+L47
+    [}]                                     5         5
+L48
+    [}]                                     1         1
+L49
+    [let]                                   1         3
+    [regex]                                 5         9
+    [=]                                     11        11
+    [#"w+"#]                                13        18
 EOF