beta 2010.09.14 23:27

1 files changed, 10 insertions, 4 deletions

diff --git a/tex/context/base/luat-sta.lua b/tex/context/base/luat-sta.lua
index 7e87b90fb..8b58774d3 100644
--- a/tex/context/base/luat-sta.lua
+++ b/tex/context/base/luat-sta.lua
@@ -60,8 +60,10 @@ local function set_by_tag(tag,key,value,default,persistent)
                 end
                 dkey, hkey = post, key
             end
-            if type(value) == nil then
-                value = value or default
+            if value == nil then
+                value = default
+            elseif value == false then
+                -- special case
             elseif persistent then
                 value = value or d[dkey] or default
             else
@@ -84,13 +86,17 @@ local function get_by_tag(tag,key,default)
         if d then
             for k in gmatch(key,"[^%.]+") do
                 local dk = d[k]
-                if dk then
+                if dk ~= nil then
                     d = dk
                 else
                     return default
                 end
             end
-            return d or default
+            if d == false then
+                return false
+            else
+                return d or default
+            end
         end
     end
 end