[PATCH 10/9] lei_query: fix relative path handling on --stdin

[Eric Wong]

Since --stdin could be waiting on user keyboard input or
something else slow, we handle it in the event loop.  That
means other commands can change the working directory of
lei-daemon while a query is being trickled to us via stdin.

Rearranging query handling internals to delay opening the
--output destination in commit 26e0fe73de93f451 meant
another command could throw off our --output pathname if
it is relative.

Fixes: 26e0fe73de93f451 ("lei_query: rearrange internals to capture query 
early")
---
 lib/PublicInbox/LeiQuery.pm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/PublicInbox/LeiQuery.pm b/lib/PublicInbox/LeiQuery.pm
index 7ddba4cf..385ba0a9 100644
--- a/lib/PublicInbox/LeiQuery.pm
+++ b/lib/PublicInbox/LeiQuery.pm
@@ -53,6 +53,9 @@ sub qstr_add { # PublicInbox::InputPipe::consume callback for 
--stdin
        my ($self) = @_; # $_[1] = $rbuf
        if (defined($_[1])) {
                $_[1] eq '' and return eval {
+                       if (my $dfd = $self->{3}) {
+                               chdir($dfd) or return $self->fail("fchdir: $!");
+                       }
                        $self->{mset_opt}->{q_raw} = $self->{mset_opt}->{qstr};
                        $self->{lse}->query_approxidate($self->{lse}->git,
                                                $self->{mset_opt}->{qstr});
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