grep: show --debug output only once

diff --git a/builtin/grep.c b/builtin/grep.c
index 8aea00c04840552d8d9912195609883ed0dc6bb2..a7e8df0d409fd431b71d1458cde6252ae119bf18 100644 (file)
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -209,6 +209,7 @@ static void start_threads(struct grep_opt *opt)
                int err;
                struct grep_opt *o = grep_opt_dup(opt);
                o->output = strbuf_out;
+               o->debug = 0;
                compile_grep_patterns(o);
                err = pthread_create(&threads[i], NULL, run, o);