1 files changed, 3 insertions, 0 deletions
diff --git a/include/str.h b/include/str.h
index f4054a1..b208515 100644
--- a/include/str.h
+++ b/include/str.h
@@ -19,6 +19,9 @@ typedef array(char) str;
 #define S(X) ((str) { len(X)-1, X })
 #define NILS ((str) { 0, NULL })
 
+typedef struct { size_t cap; str buf; } strbuf;
+#define NILSBUF ((strbuf) { 0, NILS })
+
 // compares two strings by length and ASCII values. return value:
 //   < 0 if s1 < s2
 //   = 0 if s1 = s2