src: Pull up following revision(s) (requested by nakayama in tic...

[Repository Conversion <srcmastr%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/76df8e66a589
branches:  netbsd-8
changeset: 318169:76df8e66a589
user:      martin <martin%NetBSD.org@localhost>
date:      Sat Apr 14 10:50:49 2018 +0000
description:
Pull up following revision(s) (requested by nakayama in ticket #755):

        external/bsd/mdocml/include/config.h: revision 1.5
        external/bsd/mdocml/dist/term_ascii.c: revision 1.2

Re-enable wchar_t support.  mandoc(1) can now fall back to ascii
output if the locale is non-UTF-8 locale with the following change.

https://marc.info/?l=openbsd-cvs&m=152364416720474
Modified files:
usr.bin/mandoc : term_ascii.c
Log message:
Make sure that mandoc only goes into UTF-8 mode if the user really
selected UTF-8, not some other multibyte locale.  This obviously
makes no difference on OpenBSD but improves portability.
Issue reported by <Nakayama at NetBSD> via wiz@.

diffstat:

 external/bsd/mdocml/dist/term_ascii.c |  14 +++++++++++++-
 external/bsd/mdocml/include/config.h  |   2 +-
 2 files changed, 14 insertions(+), 2 deletions(-)

diffs (48 lines):

diff -r 8cbda371322b -r 76df8e66a589 external/bsd/mdocml/dist/term_ascii.c
--- a/external/bsd/mdocml/dist/term_ascii.c     Sat Apr 14 10:44:56 2018 +0000
+++ b/external/bsd/mdocml/dist/term_ascii.c     Sat Apr 14 10:50:49 2018 +0000
@@ -21,11 +21,13 @@
 
 #include <assert.h>
 #if HAVE_WCHAR
+#include <langinfo.h>
 #include <locale.h>
 #endif
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #if HAVE_WCHAR
 #include <wchar.h>
@@ -99,7 +101,17 @@
                v = TERMENC_LOCALE == enc ?
                    setlocale(LC_CTYPE, "") :
                    setlocale(LC_CTYPE, UTF8_LOCALE);
-               if (NULL != v && MB_CUR_MAX > 1) {
+
+               /*
+                * We only support UTF-8,
+                * so revert to ASCII for anything else.
+                */
+
+               if (v != NULL &&
+                   strcmp(nl_langinfo(CODESET), "UTF-8") != 0)
+                       v = setlocale(LC_CTYPE, "C");
+
+               if (v != NULL && MB_CUR_MAX > 1) {
                        p->enc = enc;
                        p->advance = locale_advance;
                        p->endline = locale_endline;
diff -r 8cbda371322b -r 76df8e66a589 external/bsd/mdocml/include/config.h
--- a/external/bsd/mdocml/include/config.h      Sat Apr 14 10:44:56 2018 +0000
+++ b/external/bsd/mdocml/include/config.h      Sat Apr 14 10:50:49 2018 +0000
@@ -41,7 +41,7 @@
 #define HAVE_STRTONUM 0
 #define HAVE_SYS_ENDIAN 1
 #define HAVE_VASPRINTF 1
-#define HAVE_WCHAR 0
+#define HAVE_WCHAR 1
 #define HAVE_OHASH 0
 
 #define BINM_APROPOS "apropos"