Add Hugo's lang shortcode

This is a prerequisite for the translation workflow through .po files
and Weblate.

The asciidoctor include with the shortcode variable will help because
won't be needed to change the includes manually after converting the
translation (.po file) back to .adoc.

It will help other areas like, language attributes, which today is fixed
in every document.

The use of shortcode was suggested by jmooring@ from Hugo's project on
Github.

Reviewed by:	carlavilla
Differential Revision: https://reviews.freebsd.org/D30823

13 files changed, 45 insertions, 45 deletions

diff --git a/documentation/content/de/books/developers-handbook/_index.adoc b/documentation/content/de/books/developers-handbook/_index.adoc
index 18be34514d..db0dc4883a 100644
--- a/documentation/content/de/books/developers-handbook/_index.adoc
+++ b/documentation/content/de/books/developers-handbook/_index.adoc
@@ -33,9 +33,9 @@ ifeval::["{backend}" == "html5"]
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 :imagesdir: ../../../../images/books/developers-handbook/
 :chapters-path: content/de/books/developers-handbook/
 endif::[]
@@ -44,9 +44,9 @@ ifeval::["{backend}" == "pdf"]
 include::../../../../shared/mirrors.adoc[]
 include::../../../../shared/authors.adoc[]
 include::../../../../shared/releases.adoc[]
-include::../../../../shared/de/mailing-lists.adoc[]
-include::../../../../shared/de/teams.adoc[]
-include::../../../../shared/de/urls.adoc[]
+include::../../../../shared/{{% lang %}}/mailing-lists.adoc[]
+include::../../../../shared/{{% lang %}}/teams.adoc[]
+include::../../../../shared/{{% lang %}}/urls.adoc[]
 :imagesdir: ../../../static/images/books/developers-handbook/
 :chapters-path:
 endif::[]
@@ -55,9 +55,9 @@ ifeval::["{backend}" == "epub3"]
 include::../../../../shared/mirrors.adoc[]
 include::../../../../shared/authors.adoc[]
 include::../../../../shared/releases.adoc[]
-include::../../../../shared/de/mailing-lists.adoc[]
-include::../../../../shared/de/teams.adoc[]
-include::../../../../shared/de/urls.adoc[]
+include::../../../../shared/{{% lang %}}/mailing-lists.adoc[]
+include::../../../../shared/{{% lang %}}/teams.adoc[]
+include::../../../../shared/{{% lang %}}/urls.adoc[]
 :imagesdir: ../../../static/images/books/developers-handbook/
 :chapters-path:
 endif::[]
diff --git a/documentation/content/de/books/developers-handbook/bibliography/chapter.adoc b/documentation/content/de/books/developers-handbook/bibliography/chapter.adoc
index a2847e37ac..8564673423 100644
--- a/documentation/content/de/books/developers-handbook/bibliography/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/bibliography/chapter.adoc
@@ -22,9 +22,9 @@ prev: books/developers-handbook/x86
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 [[COD,1]] [1] Dave A Patterson and John L Hennessy. Copyright(R) 1998 Morgan Kaufmann Publishers, Inc. 1-55860-428-6. Morgan Kaufmann Publishers, Inc. Computer Organization and Design. The Hardware / Software Interface. 1-2.
 
diff --git a/documentation/content/de/books/developers-handbook/introduction/chapter.adoc b/documentation/content/de/books/developers-handbook/introduction/chapter.adoc
index be3e2fbe27..3c0e36008f 100644
--- a/documentation/content/de/books/developers-handbook/introduction/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/introduction/chapter.adoc
@@ -24,9 +24,9 @@ next: books/developers-handbook/tools
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/ipv6/chapter.adoc b/documentation/content/de/books/developers-handbook/ipv6/chapter.adoc
index 8657754234..448e69d621 100644
--- a/documentation/content/de/books/developers-handbook/ipv6/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/ipv6/chapter.adoc
@@ -26,9 +26,9 @@ next: books/developers-handbook/kernelbuild
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/kernelbuild/chapter.adoc b/documentation/content/de/books/developers-handbook/kernelbuild/chapter.adoc
index c3c03f6047..44146d8be0 100644
--- a/documentation/content/de/books/developers-handbook/kernelbuild/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/kernelbuild/chapter.adoc
@@ -25,9 +25,9 @@ next: books/developers-handbook/kerneldebug
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/kerneldebug/chapter.adoc b/documentation/content/de/books/developers-handbook/kerneldebug/chapter.adoc
index 8e3fefbea8..03c31a8452 100644
--- a/documentation/content/de/books/developers-handbook/kerneldebug/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/kerneldebug/chapter.adoc
@@ -29,9 +29,9 @@ next: books/developers-handbook/x86
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/l10n/chapter.adoc b/documentation/content/de/books/developers-handbook/l10n/chapter.adoc
index a52e6fd360..f184b258e0 100644
--- a/documentation/content/de/books/developers-handbook/l10n/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/l10n/chapter.adoc
@@ -25,9 +25,9 @@ next: books/developers-handbook/policies
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/policies/chapter.adoc b/documentation/content/de/books/developers-handbook/policies/chapter.adoc
index 99f8996f67..d161eded5d 100644
--- a/documentation/content/de/books/developers-handbook/policies/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/policies/chapter.adoc
@@ -28,9 +28,9 @@ next: books/developers-handbook/testing
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/secure/chapter.adoc b/documentation/content/de/books/developers-handbook/secure/chapter.adoc
index 1c03b73282..bd0f2a3448 100644
--- a/documentation/content/de/books/developers-handbook/secure/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/secure/chapter.adoc
@@ -27,9 +27,9 @@ next: books/developers-handbook/l10n
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/sockets/chapter.adoc b/documentation/content/de/books/developers-handbook/sockets/chapter.adoc
index a9dcf1abd0..489f130df1 100644
--- a/documentation/content/de/books/developers-handbook/sockets/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/sockets/chapter.adoc
@@ -27,9 +27,9 @@ next: books/developers-handbook/ipv6
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/testing/chapter.adoc b/documentation/content/de/books/developers-handbook/testing/chapter.adoc
index 8e22611fde..9c3b342aa4 100644
--- a/documentation/content/de/books/developers-handbook/testing/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/testing/chapter.adoc
@@ -25,9 +25,9 @@ next: books/developers-handbook/sockets
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/tools/chapter.adoc b/documentation/content/de/books/developers-handbook/tools/chapter.adoc
index 599080b478..b2a9c02218 100644
--- a/documentation/content/de/books/developers-handbook/tools/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/tools/chapter.adoc
@@ -34,9 +34,9 @@ next: books/developers-handbook/secure
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]
 
diff --git a/documentation/content/de/books/developers-handbook/x86/chapter.adoc b/documentation/content/de/books/developers-handbook/x86/chapter.adoc
index 0f4fef2cb8..193208e4f5 100644
--- a/documentation/content/de/books/developers-handbook/x86/chapter.adoc
+++ b/documentation/content/de/books/developers-handbook/x86/chapter.adoc
@@ -25,9 +25,9 @@ next: books/developers-handbook/bibliography
 include::shared/mirrors.adoc[]
 include::shared/authors.adoc[]
 include::shared/releases.adoc[]
-include::shared/de/mailing-lists.adoc[]
-include::shared/de/teams.adoc[]
-include::shared/de/urls.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
 
 toc::[]