From 453dee4881a9c764b09d33f3a827879f2cd3669d Mon Sep 17 00:00:00 2001
From: Eric Wong <e@yhbt.net>
Date: Thu, 7 May 2020 21:05:45 +0000
Subject: msg_iter: pass $idx as a scalar, not array

This doesn't make any difference for most multipart
messages (or any single part messages).  However,
this starts having space savings when parts start
nesting.

It also slightly simplifies callers.
---
 lib/PublicInbox/MsgIter.pm | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'lib/PublicInbox/MsgIter.pm')

diff --git a/lib/PublicInbox/MsgIter.pm b/lib/PublicInbox/MsgIter.pm
index cd5a5d99..7c28d019 100644
--- a/lib/PublicInbox/MsgIter.pm
+++ b/lib/PublicInbox/MsgIter.pm
@@ -20,12 +20,14 @@ sub em_each_part ($$;$$) {
 		my $i = 0;
 		@parts = map { [ $_, 1, ++$i ] } @parts;
 		while (my $p = shift @parts) {
-			my ($part, $depth, @idx) = @$p;
+			my ($part, $depth, $idx) = @$p;
 			my @sub = $part->subparts;
 			if (@sub) {
 				$depth++;
 				$i = 0;
-				@sub = map { [ $_, $depth, @idx, ++$i ] } @sub;
+				@sub = map {
+					[ $_, $depth, "$idx.".(++$i) ]
+				} @sub;
 				@parts = (@sub, @parts);
 			} else {
 				$cb->($p, $cb_arg);
-- 
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