[PATCH 1/2] lei up: support multiple output folders w/o --all=local

[Eric Wong <e@80x24.org>]

Being able to update 1 folder, or all (local) folders is
sometimes too limiting, so just allow updating any subset
of local folders.
---
 lib/PublicInbox/LEI.pm   |  2 +-
 lib/PublicInbox/LeiUp.pm | 21 ++++++++++++++++++---
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index 54fac7b4..7d0f63dc 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -178,7 +178,7 @@ our %CMD = ( # sorted in order of importance/use:
 	import-before! lock=s@ rsyncable alert=s@ mua=s verbose|v+
 	shared color! mail-sync!), @c_opt, opt_dash('limit|n=i', '[0-9]+') ],
 
-'up' => [ 'OUTPUT|--all', 'update saved search',
+'up' => [ 'OUTPUT...|--all', 'update saved search',
 	qw(jobs|j=s lock=s@ alert=s@ mua=s verbose|v+ all:s), @c_opt ],
 
 'lcat' => [ '--stdin|MSGID_OR_URL...', 'display local copy of message(s)',
diff --git a/lib/PublicInbox/LeiUp.pm b/lib/PublicInbox/LeiUp.pm
index 3356d11e..49b558fd 100644
--- a/lib/PublicInbox/LeiUp.pm
+++ b/lib/PublicInbox/LeiUp.pm
@@ -61,11 +61,13 @@ sub up1_redispatch {
 }
 
 sub lei_up {
-	my ($lei, $out) = @_;
+	my ($lei, @outs) = @_;
 	$lei->{lse} = $lei->_lei_store(1)->search;
 	my $opt = $lei->{opt};
 	$opt->{save} = -1;
+	my @local;
 	if (defined $opt->{all}) {
+		return $lei->fail("--all and @outs incompatible") if @outs;
 		length($opt->{mua}//'') and return
 			$lei->fail('--all and --mua= are incompatible');
 
@@ -74,7 +76,20 @@ sub lei_up {
 		$opt->{all} eq 'local' or return
 			$lei->fail('only --all=local works at the moment');
 		my @all = PublicInbox::LeiSavedSearch::list($lei);
-		my @local = grep(!m!\Aimaps?://!i, @all);
+		@local = grep(!m!\Aimaps?://!i, @all);
+	} else {
+		@local = @outs;
+	}
+	if (scalar(@outs) > 1) {
+		length($opt->{mua}//'') and return $lei->fail(<<EOM);
+multiple outputs and --mua= are incompatible
+EOM
+		# TODO:
+		return $lei->fail(<<EOM) if grep(m!\Aimaps?://!i, @outs);
+multiple destinations only supported for local outputs (FIXME)
+EOM
+	}
+	if (scalar(@local) > 1) {
 		$lei->_lei_store->write_prepare($lei); # share early
 		# daemon mode, re-dispatch into our event loop w/o
 		# creating an extra fork-level
@@ -89,7 +104,7 @@ sub lei_up {
 		$lei->event_step_init;
 		$op_c->{ops} = { '' => [$lei->can('dclose'), $lei] };
 	} else {
-		up1($lei, $out);
+		up1($lei, $local[0]);
 	}
 }