diff --git a/release/c/wuffs-unsupported-snapshot.c b/release/c/wuffs-unsupported-snapshot.c
index 858edf6..7ed4f1f 100644
--- a/release/c/wuffs-unsupported-snapshot.c
+++ b/release/c/wuffs-unsupported-snapshot.c
@@ -7661,11 +7661,11 @@
 
 #define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496
 
-#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_NEW_LINE 1225364497
+#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_NEW_LINE 1225364498
 
-#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_R_TILDE_N 1225364498
+#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_R_TILDE_N 1225364499
 
-#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364499
+#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500
 
 // ---------------- Struct Declarations
 
@@ -7755,7 +7755,7 @@
     wuffs_base__vtable vtable_for__wuffs_base__token_decoder;
     wuffs_base__vtable null_vtable;
 
-    bool f_quirks[20];
+    bool f_quirks[21];
     bool f_allow_leading_ars;
     bool f_allow_leading_ubom;
     bool f_end_of_data;
@@ -25697,7 +25697,7 @@
 
 #define WUFFS_JSON__QUIRKS_BASE 1225364480
 
-#define WUFFS_JSON__QUIRKS_COUNT 20
+#define WUFFS_JSON__QUIRKS_COUNT 21
 
 // ---------------- Private Initializer Prototypes
 
@@ -25839,7 +25839,7 @@
 
   if (a_quirk >= 1225364480) {
     a_quirk -= 1225364480;
-    if (a_quirk < 20) {
+    if (a_quirk < 21) {
       self->private_impl.f_quirks[a_quirk] = a_enabled;
     }
   }
@@ -26188,7 +26188,7 @@
                   } else {
                     if (((uint64_t)(io2_a_src - iop_a_src)) < 12) {
                       if (a_src && a_src->meta.closed) {
-                        if (self->private_impl.f_quirks[19]) {
+                        if (self->private_impl.f_quirks[20]) {
                           (iop_a_src += 6, wuffs_base__make_empty_struct());
                           *iop_a_dst++ = wuffs_base__make_token(
                               (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
@@ -26239,7 +26239,7 @@
                       goto label__string_loop_outer__continue;
                     }
                   }
-                  if (self->private_impl.f_quirks[19]) {
+                  if (self->private_impl.f_quirks[20]) {
                     if (((uint64_t)(io2_a_src - iop_a_src)) < 6) {
                       status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
                       goto exit;
@@ -26298,7 +26298,7 @@
                         (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
                         (((uint64_t)(10)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
                     goto label__string_loop_outer__continue;
-                  } else if (self->private_impl.f_quirks[19]) {
+                  } else if (self->private_impl.f_quirks[20]) {
                     (iop_a_src += 10, wuffs_base__make_empty_struct());
                     *iop_a_dst++ = wuffs_base__make_token(
                         (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
@@ -26352,7 +26352,7 @@
                     }
                   }
                   if (a_src && a_src->meta.closed) {
-                    if (self->private_impl.f_quirks[19]) {
+                    if (self->private_impl.f_quirks[20]) {
                       *iop_a_dst++ = wuffs_base__make_token(
                           (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
                           (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
@@ -26397,7 +26397,7 @@
                     }
                   }
                   if (a_src && a_src->meta.closed) {
-                    if (self->private_impl.f_quirks[19]) {
+                    if (self->private_impl.f_quirks[20]) {
                       *iop_a_dst++ = wuffs_base__make_token(
                           (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
                           (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
@@ -26444,7 +26444,7 @@
                     }
                   }
                   if (a_src && a_src->meta.closed) {
-                    if (self->private_impl.f_quirks[19]) {
+                    if (self->private_impl.f_quirks[20]) {
                       *iop_a_dst++ = wuffs_base__make_token(
                           (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
                           (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
@@ -26508,7 +26508,7 @@
                 status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code);
                 goto exit;
               }
-              if (self->private_impl.f_quirks[19]) {
+              if (self->private_impl.f_quirks[20]) {
                 *iop_a_dst++ = wuffs_base__make_token(
                     (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
                     (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
@@ -26841,7 +26841,7 @@
       v_expect = v_expect_after_value;
     }
     label__outer__break:;
-    if (self->private_impl.f_quirks[17]) {
+    if (self->private_impl.f_quirks[18]) {
       if (a_dst) {
         a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
       }
diff --git a/std/json/decode_quirks.wuffs b/std/json/decode_quirks.wuffs
index 7802640..81eb35a 100644
--- a/std/json/decode_quirks.wuffs
+++ b/std/json/decode_quirks.wuffs
@@ -186,14 +186,14 @@
 // end-of-file or '\n' is encountered. Treating this as an error avoids any
 // ambiguity in accounting for new lines within a block comment or ending a
 // line comment.
-pub const QUIRK_ALLOW_TRAILING_NEW_LINE : base.u32 = 0x4909_9400 | 0x11
+pub const QUIRK_ALLOW_TRAILING_NEW_LINE : base.u32 = 0x4909_9400 | 0x12
 
 // When this quirk is enabled, JSON Pointer strings containing "~r" or "~n",
 // which would otherwise be invalid, are unescaped as "\r" or "\n".
 //
 // This quirk isn't used by Wuffs' std/json package per se, but it is used by
 // the wuffs_aux::DecodeJson function.
-pub const QUIRK_JSON_POINTER_ALLOW_TILDE_R_TILDE_N : base.u32 = 0x4909_9400 | 0x12
+pub const QUIRK_JSON_POINTER_ALLOW_TILDE_R_TILDE_N : base.u32 = 0x4909_9400 | 0x13
 
 // When this quirk is enabled, invalid UTF-8 inside a JSON string is accepted.
 // Each byte of invalid UTF-8 is equivalent to "\uFFFD", the Unicode
@@ -209,6 +209,6 @@
 // When combined with QUIRK_ALLOW_BACKSLASH_CAPITAL_U, a "\U12345678" 10-byte
 // unit that is an invalid Unicode code point (i.e. in the range U+D800 ..=
 // U+DFFF or above U+10FFFF) is similarly replaced with U+FFFD.
-pub const QUIRK_REPLACE_INVALID_UNICODE : base.u32 = 0x4909_9400 | 0x13
+pub const QUIRK_REPLACE_INVALID_UNICODE : base.u32 = 0x4909_9400 | 0x14
 
-pri const QUIRKS_COUNT : base.u32 = 0x14
+pri const QUIRKS_COUNT : base.u32 = 0x15