1 files changed, 9 insertions, 0 deletions

diff --git a/src/string_view.c b/src/string_view.c
index 8247bd4..4e9df5c 100644
--- a/src/string_view.c
+++ b/src/string_view.c
@@ -11,6 +11,15 @@ sv_next(StringView *sv) {
     return c;
 }
 
+void
+sv_rewind(StringView *sv) {
+    if (sv->start == 0) {
+        return;
+    }
+    sv->start--;
+    sv->n++;
+}
+
 char
 sv_peek(const StringView *sv) {
     if (sv->n == 0) {