Fix misuses of NULL when talking about the NUL character

* lisp/subr.el (inhibit-null-byte-detection): Make it an obsolete alias.

* src/coding.c (setup_coding_system): Use new name.
(detect_coding): Rename null_byte_found => nul_byte_found.
(detect_coding_system): Use new name.
Rename null_byte_found => nul_byte_found.
(Fdefine_coding_system_internal): Use new name.
(syms_of_coding): Rename inhibit-null-byte-detection to
inhibit-nul-byte-detection.
* src/w16select.c (get_clipboard_data): null_char => nul_char.
* src/json.c (check_string_without_embedded_nuls): Rename from
check_string_without_embedded_nulls.
(Fjson_parse_string): Adjust accordingly.
* src/coding.h (enum define_coding_undecided_arg_index)
(enum coding_attr_index): ...null_byte... => ...nul_byte....
* lisp/info.el (info-insert-file-contents, Info-insert-dir):
* lisp/international/mule.el (define-coding-system):
* lisp/vc/vc-git.el (vc-git--call):
* doc/lispref/nonascii.texi (Lisp and Coding Systems): Use the new name.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lread.c b/src/lread.c
index 8b0d693daf2..2d64b638ff5 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -2659,7 +2659,7 @@ free_contents (void *p)
 static Lisp_Object
 read_integer (Lisp_Object readcharfun, EMACS_INT radix)
 {
-  /* Room for sign, leading 0, other digits, trailing null byte.
+  /* Room for sign, leading 0, other digits, trailing NUL byte.
      Also, room for invalid syntax diagnostic.  */
   size_t len = max (1 + 1 + UINTMAX_WIDTH + 1,
                     sizeof "integer, radix " + INT_STRLEN_BOUND (EMACS_INT));