* lib/.cppi-disable: Add wcwidth. * lib/fnmatch.c (ISBLANK): Remove. All uses changed to isblank. (isblank) [! (defined isblank || HAVE_DECL_ISBLANK)]: New macro. (ISGRAPH): Remove. All uses changed to isgraph. (FOLD) [!defined _LIBC]: Remove special case. * lib/getdate.y (lookup_word): Remove no-longer-needed call to islower. * lib/regext_internal.h (isblank): Depend on HAVE_DECL_ISBLANK, not HAVE_ISBLANK. * lib/strftime.c (TOLOWER, TOUPPER) [!defined _LIBC]: Remove special case. * m4/fnmatch.m4 (_AC_LIBOBJ_FNMATCH): Don't check for getenv decl; no longer needed. Check for isblank decl. * m4/mkstemp.m4 (gl_PREREQ_TEMPNAME): Don't check for getenv decl. * m4/regex.m4 (gl_PREREQ_REGEX): Dheck for isblank decl instead of existence.

--- a/lib/regex_internal.h
+++ b/lib/regex_internal.h
@@ -56,7 +56,7 @@
 #endif
 
 /* In case that the system doesn't have isblank().  */
-#if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank
+#if !defined _LIBC && !HAVE_DECL_ISBLANK && !defined isblank
 # define isblank(ch) ((ch) == ' ' || (ch) == '\t')
 #endif