[PATCH 34/43] view: eml_entry: reduce parameters

[Eric Wong <e@yhbt.net>]

We can save stack space and simplify subroutine calls, here.
---
 Documentation/mknews.perl     |  4 ++--
 lib/PublicInbox/Feed.pm       |  2 +-
 lib/PublicInbox/SearchView.pm |  2 +-
 lib/PublicInbox/View.pm       | 17 +++++++++--------
 4 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/Documentation/mknews.perl b/Documentation/mknews.perl
index 51d54b716..4a5d0e563 100755
--- a/Documentation/mknews.perl
+++ b/Documentation/mknews.perl
@@ -103,9 +103,9 @@ sub mime2txt {
 
 sub mime2html {
 	my ($out, $eml, $ctx) = @_;
-	my $smsg = bless {}, 'PublicInbox::Smsg';
+	my $smsg = $ctx->{smsg} = bless {}, 'PublicInbox::Smsg';
 	$smsg->populate($eml);
-	print $out PublicInbox::View::eml_entry($ctx, $smsg, $eml, 1) or die;
+	print $out PublicInbox::View::eml_entry($ctx, $eml, 1) or die;
 }
 
 sub html_start {
diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index 279106d28..476d946f5 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -51,7 +51,7 @@ sub new_html_i {
 	my ($ctx, $eml) = @_;
 	$ctx->zmore($ctx->html_top) if exists $ctx->{-html_tip};
 
-	$eml and return PublicInbox::View::eml_entry($ctx, $ctx->{smsg}, $eml,
+	$eml and return PublicInbox::View::eml_entry($ctx, $eml,
 						scalar @{$ctx->{msgs}});
 	my $smsg = shift @{$ctx->{msgs}} or
 		$ctx->zmore(PublicInbox::View::pagination_footer(
diff --git a/lib/PublicInbox/SearchView.pm b/lib/PublicInbox/SearchView.pm
index 921992a5d..623b16fb2 100644
--- a/lib/PublicInbox/SearchView.pm
+++ b/lib/PublicInbox/SearchView.pm
@@ -294,7 +294,7 @@ sub mset_thread {
 sub mset_thread_i {
 	my ($ctx, $eml) = @_;
 	$ctx->zmore($ctx->html_top) if exists $ctx->{-html_tip};
-	$eml and return PublicInbox::View::eml_entry($ctx, $ctx->{smsg}, $eml,
+	$eml and return PublicInbox::View::eml_entry($ctx, $eml,
 						scalar @{$ctx->{msgs}});
 	my $smsg = shift @{$ctx->{msgs}} or
 		$ctx->zmore(${delete($ctx->{skel})});
diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 16a0fcdfb..656953928 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -181,7 +181,8 @@ sub fmt_ts ($) { strftime('%Y-%m-%d %k:%M', gmtime($_[0])) }
 # Displays the text of of the message for /$INBOX/$MSGID/[Tt]/ endpoint
 # this is already inside a <pre>
 sub eml_entry {
-	my ($ctx, $smsg, $eml, $more) = @_;
+	my ($ctx, $eml, $more) = @_;
+	my $smsg = delete $ctx->{smsg};
 	my $subj = delete $smsg->{subject};
 	my $mid_raw = $smsg->{mid};
 	my $id = id_compress($mid_raw, 1);
@@ -370,9 +371,9 @@ sub pre_thread  { # walk_thread callback
 }
 
 sub thread_eml_entry {
-	my ($ctx, $level, $smsg, $eml) = @_;
-	my ($beg, $end) = thread_adj_level($ctx, $level);
-	$beg . '<pre>' . eml_entry($ctx, $smsg, $eml, 0) . '</pre>' . $end;
+	my ($ctx, $eml) = @_;
+	my ($beg, $end) = thread_adj_level($ctx, $ctx->{level});
+	$beg . '<pre>' . eml_entry($ctx, $eml, 0) . '</pre>' . $end;
 }
 
 sub next_in_queue ($$) {
@@ -390,12 +391,12 @@ sub stream_thread_i { # PublicInbox::WwwStream::getline callback
 	my ($ctx, $eml) = @_;
 
 	if ($eml) {
-		my ($level, $smsg) = delete @$ctx{qw(level smsg)};
 		if ($ctx->{nr} == 1) {
-			$ctx->{-title_html} = ascii_html($smsg->{subject});
+			$ctx->{-title_html} =
+					ascii_html($ctx->{smsg}->{subject});
 			$ctx->zmore($ctx->html_top);
 		}
-		return thread_eml_entry($ctx, $level, $smsg, $eml);
+		goto &thread_eml_entry; # tail recursion
 	}
 	return unless exists($ctx->{skel});
 	my $ghost_ok = $ctx->{nr}++;
@@ -470,7 +471,7 @@ sub thread_html_i { # PublicInbox::WwwStream::getline callback
 			$ctx->{-title_html} = ascii_html($smsg->{subject});
 			$ctx->zmore($ctx->html_top);
 		}
-		return eml_entry($ctx, $smsg, $eml, scalar @{$ctx->{msgs}});
+		return eml_entry($ctx, $eml, scalar @{$ctx->{msgs}});
 	} else {
 		while (my $smsg = shift @{$ctx->{msgs}}) {
 			return $smsg if exists($smsg->{blob});