2016-12-21 18:57:00

1 files changed, 11 insertions, 0 deletions

diff --git a/tex/context/base/mkiv/supp-box.lua b/tex/context/base/mkiv/supp-box.lua
index c12cca2c2..f5974daf7 100644
--- a/tex/context/base/mkiv/supp-box.lua
+++ b/tex/context/base/mkiv/supp-box.lua
@@ -472,6 +472,11 @@ name = tonumber(name) or name
         cache[category][name] = b or false
     end
 
+    function boxes.found(category,name)
+name = tonumber(name) or name
+        return cache[category][name] and true or false
+    end
+
     function boxes.direct(category,name,copy)
 name = tonumber(name) or name
         local c = cache[category]
@@ -578,6 +583,12 @@ name = tonumber(name) or name
     }
 
     interfaces.implement {
+        name      = "doifelseboxincache",
+        arguments = { "string", "string" },
+        actions   = { boxes.found, doifelse },
+    }
+
+    interfaces.implement {
         name      = "resetboxesincache",
         arguments = { "string" },
         actions   = boxes.reset,