Added documentation for -std=c90.

diff --git a/main.c b/main.c
index 72a0cac..2a02d64 100644 (file)
--- a/main.c
+++ b/main.c
@@ -627,6 +627,7 @@ static void print_help_parser(void)
        put_help("-std=STANDARD",            "Specify language standard:");
        put_choice("c99",                    "ISO C99 standard");
        put_choice("c89",                    "ISO C89 standard");
+       put_choice("c90",                    "Same as -std=c89");
        put_choice("c9x",                    "Deprecated");
        put_choice("c++",                    "ISO C++ 98");
        put_choice("c++98",                  "ISO C++ 98");