libbb: do not reject floating point strings like ".15"

diff --git a/libbb/bb_strtod.c b/libbb/bb_strtod.c
index 0515ff8678e6480368727f0703a10bdb017502c2..39bdeb5e54280c41e694f3ad307f822e62dede4f 100644 (file)
--- a/libbb/bb_strtod.c
+++ b/libbb/bb_strtod.c
@@ -17,7 +17,8 @@ double FAST_FUNC bb_strtod(const char *arg, char **endp)
        double v;
        char *endptr;
 
-       if (arg[0] != '-' && NOT_DIGIT(arg[0]))
+       /* Allow .NN form. People want to use "sleep .15" etc */
+       if (arg[0] != '-' && arg[0] != '.' && NOT_DIGIT(arg[0]))
                goto err;
        errno = 0;
        v = strtod(arg, &endptr);