diff options
Diffstat (limited to 'src/rm.c')
| -rw-r--r-- | src/rm.c | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -51,7 +51,9 @@ #include "system.h" #include "dirname.h" #include "error.h" +#include "lstat.h" #include "quote.h" +#include "quotearg.h" #include "remove.h" #include "root-dev-ino.h" @@ -95,6 +97,33 @@ static struct option const long_opts[] = {NULL, 0, NULL, 0} }; +/* Advise the user about invalid usages like "rm -foo" if the file + "-foo" exists, assuming ARGC and ARGV are as with `main'. */ + +static void +diagnose_leading_hyphen (int argc, char **argv) +{ + /* OPTIND is unreliable, so iterate through the arguments looking + for a file name that looks like an option. */ + int i; + + for (i = 1; i < argc; i++) + { + char const *arg = argv[i]; + struct stat st; + + if (arg[0] == '-' && arg[1] && lstat (arg, &st) == 0) + { + fprintf (stderr, + _("Try `%s ./%s' to remove the file %s.\n"), + argv[0], + quotearg_n_style (1, shell_quoting_style, arg), + quote (arg)); + break; + } + } +} + void usage (int status) { @@ -222,6 +251,7 @@ main (int argc, char **argv) case_GETOPT_HELP_CHAR; case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS); default: + diagnose_leading_hyphen (argc, argv); usage (EXIT_FAILURE); } } |