diff --git a/net/http/encodelatin1.c b/net/http/encodelatin1.c
index 17d7f35ac..924188c4e 100644
--- a/net/http/encodelatin1.c
+++ b/net/http/encodelatin1.c
@@ -30,7 +30,7 @@
  * @param p is input value
  * @param n if -1 implies strlen
  * @param z if non-NULL receives output length
- * @param f can kControlC0, kControlC1 to forbid
+ * @param f can kControlC0, kControlC1, kControlWs to forbid
  * @return allocated NUL-terminated buffer, or NULL w/ errno
  * @error EILSEQ means UTF-8 found we can't or won't re-encode
  * @error ENOMEM means malloc() failed
@@ -38,7 +38,12 @@
 char *EncodeLatin1(const char *p, size_t n, size_t *z, int f) {
   int c;
   size_t i;
+  char t[256];
   char *r, *q;
+  memset(t, 0, sizeof(t));
+  if (f & kControlC0) memset(t + 0x00, 1, 0x20 - 0x00), t[0x7F] = 1;
+  if (f & kControlC1) memset(t + 0x80, 1, 0xA0 - 0x80);
+  t['\t'] = t['\r'] = t['\n'] = t['\v'] = !!(f & kControlWs);
   if (z) *z = 0;
   if (n == -1) n = p ? strlen(p) : 0;
   if ((q = r = malloc(n + 1))) {
@@ -51,11 +56,7 @@ char *EncodeLatin1(const char *p, size_t n, size_t *z, int f) {
           goto Invalid;
         }
       }
-      if (((f & kControlC1) && 0x80 <= c && c < 0xA0) ||
-          ((f & kControlC0) && (c < 32 || c == 0x7F) &&
-           !(c == '\t' || c == '\r' || c == '\n' || c == '\v')) ||
-          ((f & kControlWs) &&
-           (c == '\t' || c == '\r' || c == '\n' || c == '\v'))) {
+      if (t[c]) {
         goto Invalid;
       }
       *q++ = c;
diff --git a/net/http/escape.h b/net/http/escape.h
index 734082ad6..665ebb0de 100644
--- a/net/http/escape.h
+++ b/net/http/escape.h
@@ -28,7 +28,7 @@ char *EscapeFragment(const char *, size_t, size_t *);
 char *EscapeSegment(const char *, size_t, size_t *);
 char *EscapeJsStringLiteral(const char *, size_t, size_t *);
 
-bool HasControlCodes(const char *, size_t, int);
+ssize_t HasControlCodes(const char *, size_t, int);
 char *Underlong(const char *, size_t, size_t *);
 char *DecodeLatin1(const char *, size_t, size_t *);
 char *EncodeLatin1(const char *, size_t, size_t *, int);
diff --git a/net/http/hascontrolcodes.c b/net/http/hascontrolcodes.c
index 7748bb48e..1ebc0e86e 100644
--- a/net/http/hascontrolcodes.c
+++ b/net/http/hascontrolcodes.c
@@ -16,11 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/errno.h"
-#include "libc/intrin/pcmpgtb.h"
-#include "libc/intrin/pmovmskb.h"
-#include "libc/mem/mem.h"
-#include "libc/stdio/stdio.h"
+#include "libc/bits/likely.h"
 #include "libc/str/str.h"
 #include "libc/str/thompike.h"
 #include "net/http/escape.h"
@@ -31,17 +27,21 @@
  * @param p is input value
  * @param n if -1 implies strlen
  * @param f can have kControlWs, kControlC0, kControlC1 to forbid
- * @return true if forbidden characters were found
+ * @return index of first forbidden character or -1
  * @see VisualizeControlCodes()
  */
-bool HasControlCodes(const char *p, size_t n, int f) {
-  int c;
+ssize_t HasControlCodes(const char *p, size_t n, int f) {
+  char t[256];
   wint_t x, a, b;
   size_t i, j, m;
+  memset(t, 0, sizeof(t));
+  if (f & kControlC0) memset(t + 0x00, 1, 0x20 - 0x00), t[0x7F] = 1;
+  if (f & kControlC1) memset(t + 0x80, 1, 0xA0 - 0x80);
+  t['\t'] = t['\r'] = t['\n'] = t['\v'] = !!(f & kControlWs);
   if (n == -1) n = p ? strlen(p) : 0;
   for (i = 0; i < n;) {
     x = p[i++] & 0xff;
-    if (x >= 0300) {
+    if (UNLIKELY(x >= 0300)) {
       a = ThomPikeByte(x);
       m = ThomPikeLen(x) - 1;
       if (i + m <= n) {
@@ -57,13 +57,9 @@ bool HasControlCodes(const char *p, size_t n, int f) {
         }
       }
     }
-    if (((f & kControlC1) && 0x80 <= x && x < 0xA0) ||
-        ((f & kControlC0) && (x < 32 || x == 0x7F) &&
-         !(x == '\t' || x == '\r' || x == '\n' || x == '\v')) ||
-        ((f & kControlWs) &&
-         (x == '\t' || x == '\r' || x == '\n' || x == '\v'))) {
-      return true;
+    if (x < 256 && t[x]) {
+      return i - 1;
     }
   }
-  return false;
+  return -1;
 }
diff --git a/net/http/isacceptablepath.c b/net/http/isacceptablepath.c
index 274074e0a..fa155ce20 100644
--- a/net/http/isacceptablepath.c
+++ b/net/http/isacceptablepath.c
@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/bits/likely.h"
 #include "libc/str/str.h"
 #include "libc/str/thompike.h"
 #include "net/http/http.h"
@@ -45,7 +46,7 @@ bool IsAcceptablePath(const char *data, size_t size) {
   e = p + size;
   while (p < e) {
     x = *p++ & 0xff;
-    if (x >= 0300) {
+    if (UNLIKELY(x >= 0300)) {
       a = ThomPikeByte(x);
       n = ThomPikeLen(x) - 1;
       if (p + n <= e) {
diff --git a/test/net/http/hascontrolcodes_test.c b/test/net/http/hascontrolcodes_test.c
index 26afa3a48..264bf0bd6 100644
--- a/test/net/http/hascontrolcodes_test.c
+++ b/test/net/http/hascontrolcodes_test.c
@@ -22,30 +22,30 @@
 #include "net/http/escape.h"
 
 TEST(HasControlCodes, test) {
-  EXPECT_FALSE(
-      HasControlCodes(kHyperion, kHyperionSize, kControlC0 | kControlC1));
-  EXPECT_TRUE(HasControlCodes("hi\1", -1, kControlC0));
-  EXPECT_FALSE(HasControlCodes("hi\1", -1, kControlC1));
-  EXPECT_FALSE(HasControlCodes("hi there", -1, 0));
-  EXPECT_TRUE(HasControlCodes("hi\tthere", -1, kControlWs));
+  EXPECT_EQ(-1, HasControlCodes(kHyperion, kHyperionSize, kControlC0));
+  EXPECT_EQ(+2, HasControlCodes("hi\1", -1, kControlC0));
+  EXPECT_EQ(-1, HasControlCodes("hi\1", -1, kControlC1));
+  EXPECT_EQ(-1, HasControlCodes("hi there", -1, 0));
+  EXPECT_NE(-1, HasControlCodes("hi\tthere", -1, kControlWs));
 }
 
 TEST(HasControlCodes, testDoesUtf8) {
-  EXPECT_FALSE(HasControlCodes(u8"→", -1, kControlC0 | kControlC1));
-  EXPECT_FALSE(HasControlCodes("\304\200", -1, kControlC0 | kControlC1));
-  EXPECT_TRUE(HasControlCodes("\300\200", -1, kControlC0 | kControlC1));
-  EXPECT_FALSE(HasControlCodes("\300\200", -1, kControlC1));
-  EXPECT_TRUE(HasControlCodes("\302\202", -1, kControlC0 | kControlC1));
-  EXPECT_TRUE(HasControlCodes("\302\202", -1, kControlC1));
-  EXPECT_FALSE(HasControlCodes("\302\202", -1, kControlC0));
+  EXPECT_EQ(-1, HasControlCodes(u8"→", -1, kControlC0 | kControlC1));
+  EXPECT_EQ(-1, HasControlCodes("\304\200", -1, kControlC0 | kControlC1));
+  EXPECT_NE(-1, HasControlCodes("\300\200", -1, kControlC0 | kControlC1));
+  EXPECT_EQ(-1, HasControlCodes("\300\200", -1, kControlC1));
+  EXPECT_NE(-1, HasControlCodes("\302\202", -1, kControlC0 | kControlC1));
+  EXPECT_NE(-1, HasControlCodes("\302\202", -1, kControlC1));
+  EXPECT_EQ(-1, HasControlCodes("\302\202", -1, kControlC0));
 }
 
 TEST(HasControlCodes, testHasLatin1FallbackBehavior) {
-  EXPECT_TRUE(HasControlCodes("\202", -1, kControlWs | kControlC1));
-  EXPECT_FALSE(HasControlCodes("\202", -1, kControlC0));
+  EXPECT_NE(-1, HasControlCodes("\202", -1, kControlWs | kControlC1));
+  EXPECT_EQ(-1, HasControlCodes("\202", -1, kControlC0));
 }
 
 BENCH(HasControlCodes, bench) {
-  EZBENCH2("HasControlCodes", donothing,
-           HasControlCodes(kHyperion, kHyperionSize, kControlWs));
+  EZBENCH2("HasControlCodes small", donothing, HasControlCodes("hello", -1, 0));
+  EZBENCH2("HasControlCodes big", donothing,
+           HasControlCodes(kHyperion, kHyperionSize, kControlC1));
 }
diff --git a/tool/net/redbean.c b/tool/net/redbean.c
index 510bbca7c..0ff6e3d0d 100644
--- a/tool/net/redbean.c
+++ b/tool/net/redbean.c
@@ -1125,7 +1125,7 @@ static void Daemonize(void) {
   if ((pid = fork()) > 0) _exit(0);
   umask(0);
   if (pidpath) {
-    fd = open(pidpath, O_CREAT | O_EXCL | O_WRONLY, 0644);
+    fd = open(pidpath, O_CREAT | O_WRONLY, 0644);
     write(fd, ibuf, uint64toarray_radix10(getpid(), ibuf));
     close(fd);
   }
@@ -1695,7 +1695,7 @@ static void AppendLogo(void) {
   struct Asset *a;
   if ((a = GetAsset("/redbean.png", 12)) && (p = LoadAsset(a, &n))) {
     q = EncodeBase64(p, n, &n);
-    Append("<img src=\"data:image/png;base64,");
+    Append("<img alt=\"[logo]\" src=\"data:image/png;base64,");
     AppendData(q, n);
     Append("\">\r\n");
     free(q);
@@ -2951,7 +2951,7 @@ static int LuaSetHeader(lua_State *L) {
   }
   switch (h) {
     case kHttpConnection:
-      if (evallen != 5 || memcmp(eval, "close", 5)) {
+      if (evallen != 5 || memcasecmp(eval, "close", 5)) {
         luaL_argerror(L, 2, "unsupported");
         unreachable;
       }
@@ -3162,7 +3162,7 @@ static int LuaHasControlCodes(lua_State *L) {
   const char *p;
   p = luaL_checklstring(L, 1, &n);
   f = LuaCheckControlFlags(L, 2);
-  lua_pushboolean(L, HasControlCodes(p, n, f));
+  lua_pushboolean(L, HasControlCodes(p, n, f) != -1);
   return 1;
 }
 
@@ -4530,9 +4530,6 @@ void RedBean(int argc, char *argv[], const char *prog) {
   xsigaction(SIGALRM, OnAlrm, 0, 0, 0);
   xsigaction(SIGPIPE, SIG_IGN, 0, 0, 0);
   /* TODO(jart): SIGXCPU and SIGXFSZ */
-  if (setitimer(ITIMER_REAL, &kHeartbeat, NULL) == -1) {
-    heartless = true;
-  }
   server = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, IPPROTO_TCP);
   CHECK_NE(-1, server);
   TuneSockets();
@@ -4557,6 +4554,9 @@ void RedBean(int argc, char *argv[], const char *prog) {
     fflush(stdout);
   }
   if (daemonize) Daemonize();
+  if (setitimer(ITIMER_REAL, &kHeartbeat, NULL) == -1) {
+    heartless = true;
+  }
   UpdateCurrentDate(nowl());
   freelist.c = 8;
   freelist.p = xcalloc(freelist.c, sizeof(*freelist.p));
diff --git a/tool/viz/life.c b/tool/viz/life.c
index 672516b48..2965a67c0 100644
--- a/tool/viz/life.c
+++ b/tool/viz/life.c
@@ -428,6 +428,7 @@ static void OnUnzoom(long y, long x) {
 }
 
 static void OnMouseLeftDrag(long y, long x) {
+  int i;
   if (y == save_y && x == save_x) return;
   save_y = y;
   save_x = x;
@@ -440,7 +441,10 @@ static void OnMouseLeftDrag(long y, long x) {
   if (erase) {
     Unset(y, x);
   } else {
-    Set(y, x);
+    for (i = 0; i < (2 << zoom); ++i) {
+      Set(y + (rand() % (zoom + 1)) - (rand() % (zoom + 1)),
+          x + (rand() % (zoom + 1)) - (rand() % (zoom + 1)));
+    }
   }
 }