grep: simplify out_file handling

* src/grep.c (print_filenames): New tristate enum (-H, -h, or
neither); supplants with_filenames and no_filenames.
(single_command_line_arg): New variable indicating if grep was run
with a single command-line argument.
(no_filenames): Remove variable.
(grepdirent): Don't twiddle out_file back and forth during recursion.
(grepdesc): Turn off out_file on 'grep -r foo nondirectory'.
(main): Replace with_filenames and no_filenames with print_filenames.
Enable out_file when both -r/-R and multiple arguments are given.

0 files changed, 0 insertions, 0 deletions