rm: output number of arguments at the interactive prompt

Include the number of arguments which rm received in the "Remove all
arguments?" prompt.  This is useful in the, presumably, common case
where the arguments were not provided by hand, but instead were the
result of various shell expansions.  A simple, if somewhat contrived,
example (assuming rm is aliased to rm -I) could be:

  rm * .o

where the prompt "Remove 120 arguments?" is more likely to make
the user catch the problem.

* src/rm.c (main): Include correctly pluralized n_files
in the output message.  Also remove the now redudant "all".
* tests/rm/interactive-always.sh: Adjust to the new prompt.
* tests/rm/interactive-once.sh: Likewise.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/rm.c b/src/rm.c
index 3e187cf80..b9b84e117 100644
--- a/src/rm.c
+++ b/src/rm.c
@@ -339,9 +339,13 @@ main (int argc, char **argv)
     {
       fprintf (stderr,
                (x.recursive
-                ? _("%s: remove all arguments recursively? ")
-                : _("%s: remove all arguments? ")),
-               program_name);
+                ? ngettext ("%s: remove %zu argument recursively? ",
+                            "%s: remove %zu arguments recursively? ",
+                            select_plural (n_files))
+                : ngettext ("%s: remove %zu argument? ",
+                            "%s: remove %zu arguments? ",
+                            select_plural (n_files))),
+               program_name, n_files);
       if (!yesno ())
         exit (EXIT_SUCCESS);
     }