lei <rediff|rm|tag>: stdin implies `-F eml'

These commands are usually run on a single message, so saving
the user the trouble of typing `-F eml' on the command-line
seems reasonable.  I don't think commands like "index" and
"import" will be too useful for single messages, though.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/LeiRm.pm b/lib/PublicInbox/LeiRm.pm
index 62423ac9..00b12485 100644
--- a/lib/PublicInbox/LeiRm.pm
+++ b/lib/PublicInbox/LeiRm.pm
@@ -16,7 +16,7 @@ sub input_eml_cb { # used by PublicInbox::LeiInput::input_fh
 sub lei_rm {
         my ($lei, @inputs) = @_;
         $lei->_lei_store(1)->write_prepare($lei);
-        $lei->{opt}->{'in-format'} //= 'eml';
+        $lei->{opt}->{'in-format'} //= 'eml' if $lei->{opt}->{stdin};
         my $self = bless {}, __PACKAGE__;
         $self->prepare_inputs($lei, \@inputs) or return;
         $lei->{-err_type} = 'non-fatal';