1 files changed, 4 insertions, 0 deletions
diff --git a/tex/context/base/util-sto.lua b/tex/context/base/util-sto.lua
index 052e472cf..42ee6cf00 100644
--- a/tex/context/base/util-sto.lua
+++ b/tex/context/base/util-sto.lua
@@ -125,6 +125,7 @@ function table.setmetatableindex(t,f)
             setmetatable(t,{ __index = f })
         end
     end
+    return t
 end
 
 function table.setmetatablenewindex(t,f)
@@ -142,6 +143,7 @@ function table.setmetatablenewindex(t,f)
             setmetatable(t,{ __newindex = f })
         end
     end
+    return t
 end
 
 function table.setmetatablecall(t,f)
@@ -151,6 +153,7 @@ function table.setmetatablecall(t,f)
     else
         setmetatable(t,{ __call = f })
     end
+    return t
 end
 
 function table.setmetatablekey(t,key,value)
@@ -160,6 +163,7 @@ function table.setmetatablekey(t,key,value)
         setmetatable(t,m)
     end
     m[key] = value
+    return t
 end
 
 function table.getmetatablekey(t,key,value)