[LyX/2.2.x] Activate export of chess diagrams for XHTML.

[Richard Heck]

commit ad8b479c71036e24a027ed2590df50ee1263d156
Author: Richard Heck <rgh...@lyx.org>
Date:   Sat Jul 30 23:17:15 2016 -0400

    Activate export of chess diagrams for XHTML.
    
    (cherry picked from commit 0b8c6bbbf83aa21e01f31693ae1d9b421293ef66)
---
 lib/external_templates |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/lib/external_templates b/lib/external_templates
index e9cd9a7..681b7ee 100644
--- a/lib/external_templates
+++ b/lib/external_templates
@@ -314,6 +314,11 @@ Template ChessDiagram
        Format DocBook
                Product "[Chess: $$AbsOrRelPathMaster$$Basename]"
        FormatEnd
+       Format XHTML
+               Product "<pre>$$Contents(\"$$AbsPath$$Basename.asc\")</pre>"
+               UpdateFormat asciichess
+               UpdateResult "$$AbsPath$$Basename.asc"
+       FormatEnd
 TemplateEnd