Lua: allow strings in place of compiled templates.

This allows to use a string as parameter to `pandoc.template.apply` and
in the WriterOptions `template` field.

Closes: #8321

1 files changed, 7 insertions, 0 deletions

diff --git a/pandoc-lua-engine/test/lua/module/pandoc-template.lua b/pandoc-lua-engine/test/lua/module/pandoc-template.lua
index bda24da65..94685be3d 100644
--- a/pandoc-lua-engine/test/lua/module/pandoc-template.lua
+++ b/pandoc-lua-engine/test/lua/module/pandoc-template.lua
@@ -81,5 +81,12 @@ return {
         'song: Along Comes Mary'
       )
     end),
+    test('accepts string as template', function ()
+      local context = {number = '2'}
+      assert.are_equal(
+        template.apply('$Song $number$', context):render(),
+        'Song 2'
+      )
+    end)
   },
 }