summaryrefslogtreecommitdiff
path: root/grammar
diff options
context:
space:
mode:
Diffstat (limited to 'grammar')
-rw-r--r--grammar/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/grammar/src/lib.rs b/grammar/src/lib.rs
index ea1299f..194a1f7 100644
--- a/grammar/src/lib.rs
+++ b/grammar/src/lib.rs
@@ -287,7 +287,7 @@ pub struct Grammar {
/// A private type to aid the recursive looping of rergular
/// expressions.
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, Debug)]
enum StackElement {
Seen(usize),
Unseen(usize),