Add support for rust-coreutils in integration test script.

src/parser/mod.rs

@@ -26,6 +26,7 @@ mod plain_list;
 mod plain_text;
 mod planning;
 mod property_drawer;
+mod regular_link;
 pub mod sexp;
 mod source;
 mod table;

src/parser/regular_link.rs

@@ -0,0 +1,11 @@
+use super::Context;
+use super::RegularLink;
+use crate::error::Res;
+
+#[tracing::instrument(ret, level = "debug")]
+pub fn regular_link<'r, 's>(
+    context: Context<'r, 's>,
+    input: &'s str,
+) -> Res<&'s str, RegularLink<'s>> {
+    todo!()
+}