fix swprintf("%#.0o")

diff --git a/src/functional/swprintf.c b/src/functional/swprintf.c
index 2abcb7c..243fae8 100644 (file)
--- a/src/functional/swprintf.c
+++ b/src/functional/swprintf.c
@@ -37,11 +37,11 @@ static const struct {
        { L"%0-5d", 12, L"12   " },
        { L"%-05d", 12, L"12   " },
 
-       /* ...explicit precision of 0 shall be no characters. */
+       /* ...explicit precision of 0 shall be no characters except for alt-octal. */
        { L"%.0d", 0, L"" },
        { L"%.0o", 0, L"" },
        { L"%#.0d", 0, L"" },
-       { L"%#.0o", 0, L"" },
+       { L"%#.0o", 0, L"0" },
        { L"%#.0x", 0, L"" },
 
        /* hex: test alt form and case */