diff options
| -rw-r--r-- | coreutils/tr.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/coreutils/tr.c b/coreutils/tr.c index 860b812..c736c71 100644 --- a/coreutils/tr.c +++ b/coreutils/tr.c @@ -145,12 +145,14 @@ static unsigned int expand(const char *arg, char *buffer) arg--; /* points to x */ continue; /* copy all, including eventual ']' */ } - /* [x-y...] */ - arg++; + /* [x-z] */ + arg++; /* skip - */ + if (arg[0] == '\0' || arg[1] != ']') + bb_show_usage(); ac = *arg++; while (i <= ac) *buffer++ = i++; - arg++; /* skip the assumed ']' */ + arg++; /* skip ] */ continue; } *buffer++ = *arg++; |