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-rw-r--r--lib/libc/locale/iswalnum.313
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/libc/locale/iswalnum.3 b/lib/libc/locale/iswalnum.3
index 6d3e98d..86b04a7 100644
--- a/lib/libc/locale/iswalnum.3
+++ b/lib/libc/locale/iswalnum.3
@@ -105,15 +105,16 @@
.Ft int
.Fn iswxdigit "wint_t wc"
.Sh DESCRIPTION
-The functions are character classification utility functions,
+The above functions are character classification utility functions,
for use with wide characters
.Po
.Fa wchar_t
or
.Fa wint_t
.Pc .
-See description for singlebyte classification functions, like
-.Xr isalnum 3 ,
+See the description for the similarly-named single byte classification
+functions (like
+.Xr isalnum 3 ),
for details.
.Sh RETURN VALUES
The functions return zero if the character tests false and
@@ -155,5 +156,7 @@ which are
.Fx
extensions.
.Sh CAVEATS
-The argument to these functions must be WEOF or valid wchar_t
-value with current locale; otherwise, the result is undefined.
+The result of these functions is undefined unless
+the argument is WEOF or a valid
+.Vt wchar_t
+value for the current locale.
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