1 files changed, 39 insertions, 38 deletions

diff --git a/src/json.c b/src/json.c
index 2901a20811a..3f1d27ad7fb 100644
--- a/src/json.c
+++ b/src/json.c
@@ -327,13 +327,14 @@ struct json_configuration {
   Lisp_Object false_object;
 };
 
-static json_t *lisp_to_json (Lisp_Object, struct json_configuration *conf);
+static json_t *lisp_to_json (Lisp_Object,
+                             const struct json_configuration *conf);
 
-/* Convert a Lisp object to a toplevel JSON object (array or object).  */
+/* Convert a Lisp object to a nonscalar JSON object (array or object).  */
 
 static json_t *
-lisp_to_json_toplevel_1 (Lisp_Object lisp,
-                         struct json_configuration *conf)
+lisp_to_json_nonscalar_1 (Lisp_Object lisp,
+                          const struct json_configuration *conf)
 {
   json_t *json;
   ptrdiff_t count;
@@ -448,16 +449,17 @@ lisp_to_json_toplevel_1 (Lisp_Object lisp,
   return json;
 }
 
-/* Convert LISP to a toplevel JSON object (array or object).  Signal
+/* Convert LISP to a nonscalar JSON object (array or object).  Signal
    an error of type `wrong-type-argument' if LISP is not a vector,
    hashtable, alist, or plist.  */
 
 static json_t *
-lisp_to_json_toplevel (Lisp_Object lisp, struct json_configuration *conf)
+lisp_to_json_nonscalar (Lisp_Object lisp,
+                        const struct json_configuration *conf)
 {
   if (++lisp_eval_depth > max_lisp_eval_depth)
     xsignal0 (Qjson_object_too_deep);
-  json_t *json = lisp_to_json_toplevel_1 (lisp, conf);
+  json_t *json = lisp_to_json_nonscalar_1 (lisp, conf);
   --lisp_eval_depth;
   return json;
 }
@@ -467,7 +469,7 @@ lisp_to_json_toplevel (Lisp_Object lisp, struct json_configuration *conf)
    JSON object.  */
 
 static json_t *
-lisp_to_json (Lisp_Object lisp, struct json_configuration *conf)
+lisp_to_json (Lisp_Object lisp, const struct json_configuration *conf)
 {
   if (EQ (lisp, conf->null_object))
     return json_check (json_null ());
@@ -499,7 +501,7 @@ lisp_to_json (Lisp_Object lisp, struct json_configuration *conf)
     }
 
   /* LISP now must be a vector, hashtable, alist, or plist.  */
-  return lisp_to_json_toplevel (lisp, conf);
+  return lisp_to_json_nonscalar (lisp, conf);
 }
 
 static void
@@ -557,15 +559,15 @@ DEFUN ("json-serialize", Fjson_serialize, Sjson_serialize, 1, MANY,
        NULL,
        doc: /* Return the JSON representation of OBJECT as a string.
 
-OBJECT must be a vector, hashtable, alist, or plist and its elements
-can recursively contain the Lisp equivalents to the JSON null and
-false values, t, numbers, strings, or other vectors hashtables, alists
-or plists.  t will be converted to the JSON true value.  Vectors will
-be converted to JSON arrays, whereas hashtables, alists and plists are
-converted to JSON objects.  Hashtable keys must be strings without
-embedded null characters and must be unique within each object.  Alist
-and plist keys must be symbols; if a key is duplicate, the first
-instance is used.
+OBJECT must be t, a number, string, vector, hashtable, alist, plist,
+or the Lisp equivalents to the JSON null and false values, and its
+elements must recursively consist of the same kinds of values.  t will
+be converted to the JSON true value.  Vectors will be converted to
+JSON arrays, whereas hashtables, alists and plists are converted to
+JSON objects.  Hashtable keys must be strings without embedded null
+characters and must be unique within each object.  Alist and plist
+keys must be symbols; if a key is duplicate, the first instance is
+used.
 
 The Lisp equivalents to the JSON null and false values are
 configurable in the arguments ARGS, a list of keyword/argument pairs:
@@ -603,12 +605,10 @@ usage: (json-serialize OBJECT &rest ARGS)  */)
     {json_object_hashtable, json_array_array, QCnull, QCfalse};
   json_parse_args (nargs - 1, args + 1, &conf, false);
 
-  json_t *json = lisp_to_json_toplevel (args[0], &conf);
+  json_t *json = lisp_to_json (args[0], &conf);
   record_unwind_protect_ptr (json_release_object, json);
 
-  /* If desired, we might want to add the following flags:
-     JSON_DECODE_ANY, JSON_ALLOW_NUL.  */
-  char *string = json_dumps (json, JSON_COMPACT);
+  char *string = json_dumps (json, JSON_COMPACT | JSON_ENCODE_ANY);
   if (string == NULL)
     json_out_of_memory ();
   record_unwind_protect_ptr (json_free, string);
@@ -723,12 +723,10 @@ usage: (json-insert OBJECT &rest ARGS)  */)
   move_gap_both (PT, PT_BYTE);
   struct json_insert_data data;
   data.inserted_bytes = 0;
-  /* If desired, we might want to add the following flags:
-     JSON_DECODE_ANY, JSON_ALLOW_NUL.  */
-  int status
-    /* Could have used json_dumpb, but that became available only in
-       Jansson 2.10, whereas we want to support 2.7 and upward.  */
-    = json_dump_callback (json, json_insert_callback, &data, JSON_COMPACT);
+  /* Could have used json_dumpb, but that became available only in
+     Jansson 2.10, whereas we want to support 2.7 and upward.  */
+  int status = json_dump_callback (json, json_insert_callback, &data,
+                                   JSON_COMPACT | JSON_ENCODE_ANY);
   if (status == -1)
     {
       if (CONSP (data.error))
@@ -791,7 +789,7 @@ usage: (json-insert OBJECT &rest ARGS)  */)
 /* Convert a JSON object to a Lisp object.  */
 
 static Lisp_Object ARG_NONNULL ((1))
-json_to_lisp (json_t *json, struct json_configuration *conf)
+json_to_lisp (json_t *json, const struct json_configuration *conf)
 {
   switch (json_typeof (json))
     {
@@ -932,12 +930,12 @@ DEFUN ("json-parse-string", Fjson_parse_string, Sjson_parse_string, 1, MANY,
        NULL,
        doc: /* Parse the JSON STRING into a Lisp object.
 This is essentially the reverse operation of `json-serialize', which
-see.  The returned object will be a vector, list, hashtable, alist, or
-plist.  Its elements will be the JSON null value, the JSON false
-value, t, numbers, strings, or further vectors, hashtables, alists, or
-plists.  If there are duplicate keys in an object, all but the last
-one are ignored.  If STRING doesn't contain a valid JSON object, this
-function signals an error of type `json-parse-error'.
+see.  The returned object will be the JSON null value, the JSON false
+value, t, a number, a string, a vector, a list, a hashtable, an alist,
+or a plist.  Its elements will be further objects of these types.  If
+there are duplicate keys in an object, all but the last one are
+ignored.  If STRING doesn't contain a valid JSON object, this function
+signals an error of type `json-parse-error'.
 
 The arguments ARGS are a list of keyword/argument pairs:
 
@@ -982,7 +980,8 @@ usage: (json-parse-string STRING &rest ARGS) */)
   json_parse_args (nargs - 1, args + 1, &conf, true);
 
   json_error_t error;
-  json_t *object = json_loads (SSDATA (encoded), 0, &error);
+  json_t *object
+    = json_loads (SSDATA (encoded), JSON_DECODE_ANY, &error);
   if (object == NULL)
     json_parse_error (&error);
 
@@ -1078,8 +1077,10 @@ usage: (json-parse-buffer &rest args) */)
   ptrdiff_t point = PT_BYTE;
   struct json_read_buffer_data data = {.point = point};
   json_error_t error;
-  json_t *object = json_load_callback (json_read_buffer_callback, &data,
-                                       JSON_DISABLE_EOF_CHECK, &error);
+  json_t *object
+    = json_load_callback (json_read_buffer_callback, &data,
+                          JSON_DECODE_ANY | JSON_DISABLE_EOF_CHECK,
+                          &error);
 
   if (object == NULL)
     json_parse_error (&error);