Make improvements

- Add hierarchical auto-completion to redbean's repl
- Fetch latest localtime() and strftime() from Eggert
- Shave a few milliseconds off redbean start latency
- Fix redbean repl with multi-line statements
- Make the Lua unix module code more elegant
- Harden Lua data structure serialization

libc/str/longsort.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/calls/strace.internal.h"
 #include "libc/dce.h"
 #include "libc/intrin/asan.internal.h"
 #include "libc/macros.internal.h"
@@ -80,4 +81,7 @@ void longsort(long *x, size_t n) {
       longsort_pure(x, n, t);
     }
   }
+  if (n > 1000) {
+    STRACE("longsort(%p, %'zu)", x, n);
+  }
 }

libc/str/strchrnul.c

@@ -53,6 +53,8 @@ noasan static inline const char *strchrnul_sse(const char *s, unsigned char c) {
 /**
  * Returns pointer to first instance of character.
  *
+ * If c is not found then a pointer to the nul byte is returned.
+ *
  * @param s is a NUL-terminated string
  * @param c is masked with 255 as byte to search for
  * @return pointer to first instance of c, or pointer to