add -a to usage

diff --git a/src/flac/main.c b/src/flac/main.c
index 1664293..720b2bf 100644 (file)
--- a/src/flac/main.c
+++ b/src/flac/main.c
@@ -333,6 +333,7 @@ int usage(const char *message, ...)
        printf("generic options:\n");
        printf("  -d : decode (default behavior is encode)\n");
        printf("  -t : test (same as -d except no decoded file is written)\n");
+       printf("  -a : analyze (same as -d except an analysis file is written)\n");
        printf("  -s : silent (do not write runtime encode/decode statistics to stdout)\n");
        printf("  --skip samples : can be used both for encoding and decoding\n");
        printf("encoding options:\n");