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/editfns.c b/src/editfns.c
index d6ad7474fe8..ac9b871835e 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -3086,7 +3086,7 @@ styled_format (ptrdiff_t nargs, Lisp_Object *args, bool message)
                               : FLT_RADIX == 16 ? 4
                               : -1)),
 
-   /* Maximum number of bytes (including terminating null) generated
+   /* Maximum number of bytes (including terminating NUL) generated
       by any format, if precision is no more than USEFUL_PRECISION_MAX.
       On all practical hosts, %Lf is the worst case.  */
    SPRINTF_BUFSIZE = (sizeof "-." + (LDBL_MAX_10_EXP + 1)