Added substr() and cleanup of trimmed() API.

1 files changed, 1 insertions, 0 deletions

diff --git a/docs/cstr_api.md b/docs/cstr_api.md
index 7bebbbfb..a838c7d9 100644
--- a/docs/cstr_api.md
+++ b/docs/cstr_api.md
@@ -23,6 +23,7 @@ cstr         cstr_with_capacity(size_t cap);
 cstr         cstr_with_size(size_t len, char fill);                   // repeat fill len times
 cstr         cstr_from_fmt(const char* fmt, ...);                     // printf() formatting
 cstr         cstr_clone(cstr s);
+cstr         cstr_substr(cstr s, size_t pos, size_t n);
 
 cstr*        cstr_take(cstr* self, cstr s);                           // take the constructed or moved string
 cstr         cstr_move(cstr* self);                                   // move string to caller, leave empty string