fix #97: wrap references in a non-capturing group

pomsky-lang · Oct 27, 2023 · acda169 · acda169
1 parent d21cf6b
commit acda169
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Showing 3 changed files with 9 additions and 1 deletion.
diff --git a/pomsky-lib/src/exprs/reference.rs b/pomsky-lib/src/exprs/reference.rs
@@ -138,7 +138,7 @@ impl RegexReference {
         match self {
             &RegexReference::Number(number) => {
                 debug_assert!(number <= 99);
-                write!(buf, "\\{number}").unwrap();
+                write!(buf, "(?:\\{number})").unwrap();
             }
             RegexReference::Name(name) => {
                 write!(buf, "\\k<{name}>").unwrap();

diff --git a/pomsky-lib/tests/testcases/references/one.txt b/pomsky-lib/tests/testcases/references/one.txt
@@ -0,0 +1,4 @@
+#! flavor=Pcre
+:('test') ::1
+-----
+(test)(?:\1)
diff --git a/pomsky-lib/tests/testcases/references/one_named.txt b/pomsky-lib/tests/testcases/references/one_named.txt
@@ -0,0 +1,4 @@
+#! flavor=Pcre
+:foo('foo') ::1 ::foo
+-----
+(?P<foo>foo)(?:\1)(?:\1)