more int -> bool conversions

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2796 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

src/chars.c

@@ -41,7 +41,7 @@
 
 #ifndef HAVE_ISBLANK
 /* This function is equivalent to isblank(). */
-int nisblank(int c)
+bool nisblank(int c)
 {
     return isspace(c) && (c == '\t' || !is_cntrl_char(c));
 }
@@ -49,7 +49,7 @@ int nisblank(int c)
 
 #if !defined(HAVE_ISWBLANK) && defined(NANO_WIDE)
 /* This function is equivalent to iswblank(). */
-int niswblank(wchar_t wc)
+bool niswblank(wchar_t wc)
 {
     return iswspace(wc) && (wc == '\t' || !is_cntrl_wchar(wc));
 }

src/proto.h

@@ -160,10 +160,10 @@ extern char *homedir;
 
 /* Public functions in chars.c. */
 #ifndef HAVE_ISBLANK
-int nisblank(int c);
+bool nisblank(int c);
 #endif
 #if !defined(HAVE_ISWBLANK) && defined(NANO_WIDE)
-int niswblank(wchar_t wc);
+bool niswblank(wchar_t wc);
 #endif
 bool is_byte(int c);
 bool is_alnum_mbchar(const char *c);