add -1 option, error checking for parse_number()

1 files changed, 1 insertions, 0 deletions

diff --git a/usage.c b/usage.c
index 6664916..d3579bd 100644
--- a/usage.c
+++ b/usage.c
@@ -1,4 +1,5 @@
 char *usage_opts[] = {
+	"  -1: don't alternate colors for normal characters.",
 	"  -b: bold color output.",
 	"  -c nnnn: colors (2 to 4 digits, 0 to 7).",
 	"  -h, --help: print this help message.",