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-rw-r--r--lib/libc/locale/isblank.35
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/libc/locale/isblank.3 b/lib/libc/locale/isblank.3
index e9b5503..1929846 100644
--- a/lib/libc/locale/isblank.3
+++ b/lib/libc/locale/isblank.3
@@ -75,3 +75,8 @@ returns non-zero if the character tests true.
.Xr ctype 3 ,
.Xr multibyte 3 ,
.Xr ascii 7
+.Sh STANDARDS
+.Fn isblank
+conforms to
+.St -isoC-99 .
+
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