getcwd-lgpl: fix m4 to match relaxed test for BSD

[gnulib.git] / modules / mbchar

diff --git a/modules/mbchar b/modules/mbchar
index d15e932..2ff5907 100644 (file)
--- a/modules/mbchar
+++ b/modules/mbchar
@@ -11,6 +11,7 @@ extensions
 stdbool
 wchar
 wctype-h
+iswblank
 wcwidth
 memcmp