From 2b7e78220229a008e07b75c2092b10698e304307 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Fri, 29 Sep 2017 18:31:45 +0200
Subject: [PATCH] Rakefile: fix reporting xsltproc errors

Older versions used to exit with code 0 even in the case of an
error. Newer versions exit with <> 0. Handle that case and output the
emitted lines.
---
 Rakefile | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Rakefile b/Rakefile
index 4bd9f3dab..5068cac5e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -314,15 +314,19 @@ end
 # man pages from DocBook XML
 rule '.1' => '.xml' do |t|
   filter = lambda do |code, lines|
-    if (0 == code) && lines.any? { |line| /^error/i.match(line) }
+    if (0 == code) && lines.any? { |line| /^error|parser error/i.match(line) }
       File.unlink(t.name) if File.exists?(t.name)
       result = 1
+
+    elsif 0 != code
+      result = code
+      puts lines.join('')
+
     else
       result = 0
+      puts lines.join('') if $verbose
     end
 
-    puts lines.join('') if $verbose
-
     result
   end