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-rw-r--r--docs/cstr_api.md1
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/cstr_api.md b/docs/cstr_api.md
index 273f4de4..3d9aae85 100644
--- a/docs/cstr_api.md
+++ b/docs/cstr_api.md
@@ -57,6 +57,7 @@ char* cstr_append(cstr* self, const char* str);
char* cstr_append_n(cstr* self, const char* str, size_t n); // append n first bytes of str
char* cstr_append_sv(cstr* self, csview str);
char* cstr_append_s(cstr* self, cstr str);
+int cstr_append_fmt(const char* fmt, ...); // printf() formatting
char* cstr_append_uninit(cstr* self, size_t len); // append len uninitialized bytes
void cstr_insert(cstr* self, size_t pos, const char* ins);