isascii: stop using it

* doc/pastposix-functions/isascii.texi: There is no isascii module.
* m4/mbswidth.m4 (gl_MBSWIDTH): Do not check for isascii,
as it no longer seems to be used here.
* tests/test-c-ctype.c (test_agree_with_C_locale):
Do not assume isascii exists, as POSIX no longer requires it.

diff --git a/ChangeLog b/ChangeLog
index 92010112851f4110248ea3066c2b33d769eecf25..4e2c23cea865d21744c214b3b656af86fe616c3c 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2025-02-14  Paul Eggert  <eggert@cs.ucla.edu>
 
+       isascii: stop using it
+       * doc/pastposix-functions/isascii.texi: There is no isascii module.
+       * m4/mbswidth.m4 (gl_MBSWIDTH): Do not check for isascii,
+       as it no longer seems to be used here.
+       * tests/test-c-ctype.c (test_agree_with_C_locale):
+       Do not assume isascii exists, as POSIX no longer requires it.
+
        doc: “C11” → “C standard” for <sys/types.h>
        * doc/gnulib-readme.texi (C language versions): Don’t be overly
        specific about <sys/types.h>’s absence from the C standard.

diff --git a/doc/pastposix-functions/isascii.texi b/doc/pastposix-functions/isascii.texi
index d3e422147aafa0d8483193538de0424cb89e4503..2c92fd9311358033ea83a00a0e68fcc8008cef4c 100644 (file)
--- a/doc/pastposix-functions/isascii.texi
+++ b/doc/pastposix-functions/isascii.texi
@@ -5,19 +5,15 @@
 Removed in POSIX.1-2024.
 POSIX.1-2017 specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/isascii.html}
 
-Gnulib module: ctype
-@mindex ctype
+Gnulib module: ---
 
-Portability problems fixed by Gnulib:
+Portability problems not fixed by Gnulib:
 @itemize
 @item
 This function cannot be called from plain inline or extern inline functions
 on some platforms:
 macOS 10.8.
-@end itemize
 
-Portability problems not fixed by Gnulib:
-@itemize
 @item
 This function is removed in POSIX.1-2024.
 @end itemize

diff --git a/m4/mbswidth.m4 b/m4/mbswidth.m4
index f46a502c0eeab933d3f5feb494d8202a75892d56..50f57c8e1f8941467c7b8922a2eb1426489d9f8c 100644 (file)
--- a/m4/mbswidth.m4
+++ b/m4/mbswidth.m4
@@ -1,5 +1,5 @@
 # mbswidth.m4
-# serial 19
+# serial 20
 dnl Copyright (C) 2000-2002, 2004, 2006-2025 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,7 +12,7 @@ dnl From Bruno Haible.
 AC_DEFUN([gl_MBSWIDTH],
 [
   AC_CHECK_HEADERS_ONCE([wchar.h])
-  AC_CHECK_FUNCS_ONCE([isascii mbsinit])
+  AC_CHECK_FUNCS_ONCE([mbsinit])
 
   dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
   dnl that clashes with ours.

diff --git a/tests/test-c-ctype.c b/tests/test-c-ctype.c
index 35f2fd1e7a6fd58819a18cb8c118d3aad3953bfe..c5eadb297e7b9263dbb7c62a32a1941164038582 100644 (file)
--- a/tests/test-c-ctype.c
+++ b/tests/test-c-ctype.c
@@ -34,7 +34,6 @@ test_agree_with_C_locale (void)
 
   for (c = 0; c <= UCHAR_MAX; c++)
     {
-      ASSERT (c_isascii (c) == (isascii (c) != 0));
       if (c_isascii (c))
         {
           ASSERT (c_isalnum (c) == (isalnum (c) != 0));