lei: various completion improvements

"lei export-kw" no longer completes for anonymous sources.

More commands use "lei refresh-mail-sync" as a basis for their
completion work, as well.

";AUTH=ANONYMOUS@" is stripped from completions since it was
preventing bash completion from working on AUTH=ANONYMOUS IMAP
URLs.  I'm not sure if there's a better way, but all of our code
works fine without specifying AUTH=ANONYMOUS as a command-line
arg.

Finally, we fallback to using more candidates if none can
be found, allowing multiple URLs to be completed.

1 files changed, 6 insertions, 5 deletions

diff --git a/lib/PublicInbox/LeiLsMailSource.pm b/lib/PublicInbox/LeiLsMailSource.pm
index 2265969a..1db15d57 100644
--- a/lib/PublicInbox/LeiLsMailSource.pm
+++ b/lib/PublicInbox/LeiLsMailSource.pm
@@ -107,12 +107,13 @@ sub lei_ls_mail_source {
 sub _complete_ls_mail_source {
         my ($lei, @argv) = @_;
         my $match_cb = $lei->complete_url_prepare(\@argv);
-        my @m = map { $match_cb->($_) } $lei->url_folder_cache->keys;
-        my %f = map { $_ => 1 } @m;
+        my @k = $lei->url_folder_cache->keys($argv[-1], 1);
+        my @m = map { $match_cb->($_) } @k;
+        my %f = map { $_ => 1 } (@m ? @m : @k);
         if (my $lms = $lei->lms) {
-                @m = map { $match_cb->($_) } grep(
-                        m!\A(?:imaps?|nntps?|s?news)://!, $lms->folders);
-                @f{@m} = @m;
+                @k = $lms->folders($argv[-1], 1);
+                @m = map { $match_cb->($_) } grep(m!\A[a-z]+://!, @k);
+                if (@m) { @f{@m} = @m } else { @f{@k} = @k }
         }
         keys %f;
 }