1 files changed, 5 insertions, 0 deletions
diff --git a/TODO b/TODO
index 65bdad4ad..9d1883f5c 100644
--- a/TODO
+++ b/TODO
@@ -76,3 +76,8 @@ remove m4/stat.m4 and m4/lstat.m4.
 df: alignment problem of `Used' heading with e.g., -mP
 
 tr: support nontrivial equivalence classes, e.g. [=e=] with LC_COLLATE=fr_FR
+
+lib/strftime.c: Since %N is the only format that we need but that
+  glibc's strftime doesn't support, consider using a wrapper that
+  would expand /%(-_)?\d*N/ to the desired string and then pass the
+  resulting string to glibc's strftime.