[evolution] help: Add a page about printing limitations in Flatpak versions

[Andre Klapper <aklapper src gnome org>]

commit dfc1a82b1e105931cc29554f85de012af6affa7a
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Feb 21 13:22:29 2020 +0100

    help: Add a page about printing limitations in Flatpak versions
    
    This seems to become a common question, see e.g.
    * https://gitlab.gnome.org/GNOME/evolution/issues/515
    * https://gitlab.gnome.org/GNOME/evolution/issues/768
    * https://mail.gnome.org/archives/evolution-list/2020-February/msg00096.html

 help/C/printing-in-flatpak.page | 30 ++++++++++++++++++++++++++++++
 help/CMakeLists.txt             |  1 +
 2 files changed, 31 insertions(+)
---
diff --git a/help/C/printing-in-flatpak.page b/help/C/printing-in-flatpak.page
new file mode 100644
index 0000000000..8a8e75dc0b
--- /dev/null
+++ b/help/C/printing-in-flatpak.page
@@ -0,0 +1,30 @@
+<page xmlns="http://projectmallard.org/1.0/"; xmlns:its="http://www.w3.org/2005/11/its";
+      type="topic" id="printing-in-flatpak">
+
+  <info>
+    <desc>This is a limitation of Flatpak.</desc>
+
+    <link type="guide" xref="index#common-mail-problems" />
+
+    <revision pkgversion="3.35.91" version="0.1" date="2020-02-21" status="review"/>
+    <credit type="author">
+      <name its:translate="no">Andre Klapper</name>
+      <email its:translate="no">ak-47 gmx net</email>
+    </credit>
+
+    <include href="legal.xml" xmlns="https://www.w3.org/2001/XInclude"/>
+    
+
+</info>
+
+<title>Cannot print an email</title>
+
+<p>If you run a <link href="https://flathub.org/";>Flatpak</link> version of
+<app>Evolution</app>, then you cannot print an email to a printer. This is a
+<link href="https://bugs.webkit.org/show_bug.cgi?id=192748";>limitation of the
+underlying WebKitGTK library</link> used by Evolution.</p>
+
+<p>To print an email to a file, you can run <cmd>flatpak run --filesystem=home
+org.gnome.Evolution</cmd> as a workaround.</p>
+
+</page>
diff --git a/help/CMakeLists.txt b/help/CMakeLists.txt
index 3fff5ede31..b8783881e5 100644
--- a/help/CMakeLists.txt
+++ b/help/CMakeLists.txt
@@ -213,6 +213,7 @@ set(HELP_FILES
        memos-usage.page
        offline.page
        organizing.page
+       printing-in-flatpak.page
        problems-debug-how-to.page
        problems-getting-help.page
        problems-reporting-bugs.page