change the NO_UTF8 flag to the USE_UTF8 flag, and reverse its meaning

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2691 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -95,6 +95,8 @@ CVS code -
 	  toggle_init(), usage(), do_tab(), main(), nanorc.sample,
 	  nano.1, nanorc.5, and nano.texi. (DLR, suggested by many
 	  people)
+	- Change the NO_UTF8 flag to the USE_UTF8 flag, and reverse its
+	  meaning. (DLR)
 - chars.c:
   make_mbstring()
 	- Change erroneous ENABLE_EXTRA #ifdef to NANO_EXTRA to fix a

src/chars.c

@@ -68,7 +68,7 @@ bool is_alnum_mbchar(const char *c)
     assert(c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	wchar_t wc;
 	int c_mb_len = mbtowc(&wc, c, MB_CUR_MAX);
 
@@ -89,7 +89,7 @@ bool is_blank_mbchar(const char *c)
     assert(c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	wchar_t wc;
 	int c_mb_len = mbtowc(&wc, c, MB_CUR_MAX);
 
@@ -130,7 +130,7 @@ bool is_cntrl_mbchar(const char *c)
     assert(c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	wchar_t wc;
 	int c_mb_len = mbtowc(&wc, c, MB_CUR_MAX);
 
@@ -151,7 +151,7 @@ bool is_punct_mbchar(const char *c)
     assert(c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	wchar_t wc;
 	int c_mb_len = mbtowc(&wc, c, MB_CUR_MAX);
 
@@ -212,7 +212,7 @@ char *control_mbrep(const char *c, char *crep, int *crep_len)
     assert(c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	wchar_t wc;
 	int c_mb_len = mbtowc(&wc, c, MB_CUR_MAX), crep_mb_len;
 
@@ -246,7 +246,7 @@ int mbwidth(const char *c)
     assert(c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	wchar_t wc;
 	int c_mb_len = mbtowc(&wc, c, MB_CUR_MAX), width;
 
@@ -271,7 +271,7 @@ int mb_cur_max(void)
 {
     return
 #ifdef NANO_WIDE
-	!ISSET(NO_UTF8) ? MB_CUR_MAX :
+	ISSET(USE_UTF8) ? MB_CUR_MAX :
 #endif
 	1;
 }
@@ -288,7 +288,7 @@ char *make_mbchar(int chr, int *chr_mb_len)
     assert(chr_mb_len != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	chr_mb = charalloc(MB_CUR_MAX);
 	*chr_mb_len = wctomb(chr_mb, chr);
 
@@ -323,7 +323,7 @@ int parse_mbchar(const char *buf, char *chr, bool *bad_chr, size_t
 	*bad_chr = FALSE;
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	/* Get the number of bytes in the multibyte character. */
 	buf_mb_len = mblen(buf, MB_CUR_MAX);
 
@@ -470,7 +470,7 @@ int nstrncasecmp(const char *s1, const char *s2, size_t n)
 int mbstrncasecmp(const char *s1, const char *s2, size_t n)
 {
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	char *s1_mb = charalloc(MB_CUR_MAX);
 	char *s2_mb = charalloc(MB_CUR_MAX);
 	wchar_t ws1, ws2;
@@ -540,7 +540,7 @@ const char *nstrcasestr(const char *haystack, const char *needle)
 const char *mbstrcasestr(const char *haystack, const char *needle)
 {
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	char *r_mb = charalloc(MB_CUR_MAX);
 	char *q_mb = charalloc(MB_CUR_MAX);
 	wchar_t wr, wq;
@@ -646,7 +646,7 @@ const char *mbrevstrcasestr(const char *haystack, const char *needle,
 	const char *rev_start)
 {
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	char *r_mb = charalloc(MB_CUR_MAX);
 	char *q_mb = charalloc(MB_CUR_MAX);
 	wchar_t wr, wq;
@@ -734,7 +734,7 @@ size_t mbstrnlen(const char *s, size_t maxlen)
     assert(s != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	size_t n = 0;
 	int s_mb_len;
 
@@ -778,7 +778,7 @@ bool has_blank_mbchars(const char *s)
     assert(str != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	char *chr_mb = charalloc(MB_CUR_MAX);
 	bool retval = FALSE;
 
@@ -810,7 +810,7 @@ char *mbstrchr(const char *s, char *c)
     assert(s != NULL && c != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	char *s_mb = charalloc(MB_CUR_MAX);
 	const char *q = s;
 	wchar_t ws, wc;
@@ -857,7 +857,7 @@ bool is_valid_mbstring(const char *s)
 
     return 
 #ifdef NANO_WIDE
-	!ISSET(NO_UTF8) ?
+	ISSET(USE_UTF8) ?
 	(mbstowcs(NULL, s, (size_t)-1) != (size_t)-1) :
 #endif
 
@@ -874,7 +874,7 @@ char *make_valid_mbstring(const char *s)
     assert(s != NULL);
 
 #ifdef NANO_WIDE
-    if (!ISSET(NO_UTF8)) {
+    if (ISSET(USE_UTF8)) {
 	char *chr_mb = charalloc(MB_CUR_MAX);
 	char *s_mb = charalloc((MB_CUR_MAX * strlen(s)) + 1);
 	size_t s_mb_len = 0;

src/nano.c

@@ -4163,20 +4163,17 @@ int main(int argc, char **argv)
 
 #ifdef NANO_WIDE
     {
-	/* If the locale set doesn't exist, or it exists but doesn't
-	 * include the case-insensitive string "UTF8" or "UTF-8", we
-	 * shouldn't go into UTF-8 mode. */
+	/* If the locale set exists and includes the case-insensitive
+	 * string "UTF8" or "UTF-8", we should use UTF-8. */
 	char *locale = setlocale(LC_ALL, "");
 
-	if (locale == NULL || (locale != NULL &&
-		strcasestr(locale, "UTF8") == NULL &&
-		strcasestr(locale, "UTF-8") == NULL))
-	    SET(NO_UTF8);
-
+	if (locale != NULL && (strcasestr(locale, "UTF8") != NULL ||
+		strcasestr(locale, "UTF-8") != NULL)) {
+	    SET(USE_UTF8);
 #ifdef USE_SLANG
-	if (!ISSET(NO_UTF8))
 	    SLutf8_enable(TRUE);
 #endif
+	}
     }
 #else
     setlocale(LC_ALL, "");

src/nano.h

@@ -304,7 +304,7 @@ typedef struct syntaxtype {
 #define WHITESPACE_DISPLAY	(1<<27)
 #define MORE_SPACE		(1<<28)
 #define TABS_TO_SPACES		(1<<29)
-#define NO_UTF8			(1<<30)
+#define USE_UTF8		(1<<30)
 
 /* Control key sequences.  Changing these would be very, very bad. */
 #define NANO_CONTROL_SPACE 0

src/winio.c

@@ -2287,7 +2287,7 @@ char *display_string(const char *buf, size_t start_col, size_t len, bool
 	    }
 	}
 #ifdef NANO_WIDE
-	else if (!ISSET(NO_UTF8) && mbwidth(buf_mb) > 1) {
+	else if (ISSET(USE_UTF8) && mbwidth(buf_mb) > 1) {
 	    converted[index++] = ' ';
 	    start_col++;
 
@@ -2353,7 +2353,7 @@ char *display_string(const char *buf, size_t start_col, size_t len, bool
 	    /* If buf contains an invalid multibyte non-control
 	     * character, interpret that character as though it's a
 	     * normal non-control character. */
-	    if (!ISSET(NO_UTF8) && bad_char) {
+	    if (ISSET(USE_UTF8) && bad_char) {
 		char *bad_buf_mb;
 		int bad_buf_mb_len;