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-rw-r--r--bin/c11.l1
1 files changed, 1 insertions, 0 deletions
diff --git a/bin/c11.l b/bin/c11.l
index c03ce3e5..d0bcb8fa 100644
--- a/bin/c11.l
+++ b/bin/c11.l
@@ -111,6 +111,7 @@ register|restrict|return|static|struct|switch|typedef|union|volatile|while |
 }
 <StringLiteral>{
 	"%%" |
+	"%"[EO]?[ABCDFGHIMRSTUVWXYZabcdeghjmnprtuwxyz] |
 	"%"[ #+-0]*{width}?("."{width})?([Lhjltz]|hh|ll)?[AEFGXacdefginopsux] {
 		return Format;
 	}