maint: simplify c32issep

* src/system.h (c32issep): Avoid unnecessary ‘!!’.

diff --git a/src/system.h b/src/system.h
index 2c6511b277561617ab9b7de382db9bdefbefea78..d3c5f08a78696707f1dac27dde3ac55a943b3bc5 100644 (file)
--- a/src/system.h
+++ b/src/system.h
@@ -180,7 +180,7 @@ c32issep (char32_t wc)
 #if defined __GLIBC__
   return !! c32isblank (wc);
 #else
-  return !! (c32isspace (wc) && ! c32isvertspace (wc) && ! c32isnbspace (wc));
+  return c32isspace (wc) && ! c32isvertspace (wc) && ! c32isnbspace (wc);
 #endif
 }