fix: handle escaped newlines in heredocs (#41)

Author: martinohmann

src/parser/tests.rs

@@ -423,6 +423,11 @@ fn unescape_strings() {
           object_attr = {
             "key\nwith\nnewlines" = true
           }
+
+          heredoc = <<-EOS
+            some string with \
+            escaped newline
+          EOS
         }
     "#;
 
@@ -437,6 +442,7 @@ fn unescape_strings() {
                     "object_attr",
                     Expression::from_iter([("key\nwith\nnewlines", true)]),
                 ))
+                .add_attribute(("heredoc", "some string with escaped newline\n"))
                 .build(),
         )
         .build();

src/parser/unescape.rs

@@ -20,6 +20,7 @@ pub fn unescape(s: &str) -> Result<String> {
         }
 
         let c = match chars.next() {
+            Some('\n') => continue,
             Some('b') => '\u{0008}',
             Some('f') => '\u{000C}',
             Some('n') => '\n',