From: Chris Lamb <lamby@debian.org>
Date: Thu, 28 Jun 2018 19:30:15 +0100
Subject: [PATCH] Re-use translated content instead of skipping if previously
 translated.

This fixes an issue where an initial `inline` directive would be translated
correctly, but subsequent inlines of the same would result in the raw
contents of the `.po` file being inserted into the page instead.

For example, given a `index.mdwn` containing:

    \[[!inline pages="inline" raw="yes"]]
    \[[!inline pages="inline" raw="yes"]]

.. and an `index.de.po` of:

    msgid "\[[!inline pages=\"inline\" raw=\"yes\"]]\n"
    msgstr "\[[!inline pages=\"inline.de\" raw=\"yes\"]]\n"

.. together with an `inline.mdwn` of:

   This is inlined content.

.. and an `inline.de.po` of:

    msgid "This is inlined content."
    msgstr "This is German inlined content."

.. would result in the following translation:

    This is the inlined content.
    # SOME DESCRIPTIVE TITLE
    # Copyright (C) YEAR Free Software Foundation, Inc.
    # This file is distributed under the same license as the PACKAGE package.
    # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.

.. instead of, of course:

    This is the inlined content.
    This is the inlined content.
---
 IkiWiki/Plugin/po.pm | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/IkiWiki/Plugin/po.pm b/IkiWiki/Plugin/po.pm
index 418e8e58a..ecd1f5499 100644
--- a/IkiWiki/Plugin/po.pm
+++ b/IkiWiki/Plugin/po.pm
@@ -303,9 +303,12 @@ sub filter (@) {
 	my $page = $params{page};
 	my $destpage = $params{destpage};
 	my $content = $params{content};
-	if (istranslation($page) && ! alreadyfiltered($page, $destpage)) {
-		$content = po_to_markup($page, $content);
-		setalreadyfiltered($page, $destpage);
+	if (istranslation($page)) {
+		if (!defined(alreadyfiltered($page, $destpage))) {
+			$content = po_to_markup($page, $content);
+			setalreadyfiltered($page, $destpage, $content);
+		}
+		$content = alreadyfiltered($page, $destpage);
 	}
 	return $content;
 }
@@ -747,15 +750,15 @@ sub myisselflink ($$) {
 		my $page=shift;
 		my $destpage=shift;
 
-		return exists $filtered{$page}{$destpage}
-			 && $filtered{$page}{$destpage} eq 1;
+		return $filtered{$page}{$destpage};
 	}
 
 	sub setalreadyfiltered($$) {
 		my $page=shift;
 		my $destpage=shift;
+		my $content=shift;
 
-		$filtered{$page}{$destpage}=1;
+		$filtered{$page}{$destpage}=$content;
 	}
 
 	sub unsetalreadyfiltered($$) {
-- 
2.18.0