diff options
Diffstat (limited to 'src/cg-rainbow.c')
| -rw-r--r-- | src/cg-rainbow.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/cg-rainbow.c b/src/cg-rainbow.c index 8aaa2cb..6ef606e 100644 --- a/src/cg-rainbow.c +++ b/src/cg-rainbow.c @@ -70,7 +70,7 @@ double luminosity = (double)1 / 3; void usage(void) { fprintf(stderr, - "Usage: %s [-M method] [-S site] [-c crtc]... [-R rule] [-p priority] " + "Usage: %s [-M method] [-S site] [-c crtc]... [-R rule] [-p priority]" " [-l luminosity] [-s rainbowhz]\n", argv0); exit(1); @@ -127,7 +127,7 @@ static int parse_double(double* restrict out, const char* restrict str) *out = strtod(str, &end); if (errno || (*out < 0) || isinf(*out) || isnan(*out) || *end) return -1; - if (!strchr("0123456789.", *str)) + if (!*str || !strchr("0123456789.", *str)) return -1; return 0; } |