When grep is called with the --quiet option, the pager is initialized
despite not being used.  When the pager is "less", anything output by
previous commands and not ended with a newline is overwritten.

$ echo -n aaa; echo bbb
aaabbb
$ echo -n aaa; git grep -q foo; echo bbb
bbb

This can be worked around, for example, by making sure STDOUT is not a
TTY or more directly by setting git's pager to "cat":

$ echo -n aaa; git grep -q foo > /dev/null; echo bbb
aaabbb
$ echo -n aaa; PAGER=cat git grep -q foo; echo bbb
aaabbb

This patch prevents calling the pager in the first place, saving an
unnecessary fork() call.

Signed-off-by: Wilhelm Schuermann <wimschuerm...@googlemail.com>
---
 builtin/grep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index e77f7cf..fe7b9fd 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -885,7 +885,7 @@ int cmd_grep(int argc, const char **argv, const char 
*prefix)
                }
        }
 
-       if (!show_in_pager)
+       if (!show_in_pager && !opt.status_only)
                setup_pager();
 
        if (!use_index && (untracked || cached))
-- 
2.3.3.dirty

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