fix InterpolatedPattern compilation

src/parser.rs

@@ -434,6 +434,7 @@ fn is_word_char(c: char) -> bool {
 }
 
 fn parse_string(s: &'static str, span: SimpleSpan) -> Result<Vec<Spanned<StringPart>>, String> {
+    println!("parsing string pattern: {s}");
     let mut parts = vec![];
     let mut current_part = String::new();
     let mut start = span.start;
@@ -502,6 +503,12 @@ fn parse_string(s: &'static str, span: SimpleSpan) -> Result<Vec<Spanned<StringP
             StringPart::Inline(current_part),
             SimpleSpan::new(start, span.end),
         ))
+    } else if !current_part.is_empty() {
+        let part_len = current_part.len();
+        parts.push((
+            StringPart::Data(current_part),
+            SimpleSpan::new(start, part_len),
+        ))
     }
 
     Ok(parts)