1 files changed, 28 insertions, 0 deletions
diff --git a/tex/context/base/attr-mkr.lua b/tex/context/base/attr-mkr.lua
new file mode 100644
index 000000000..c809d53a9
--- /dev/null
+++ b/tex/context/base/attr-mkr.lua
@@ -0,0 +1,28 @@
+if not modules then modules = { } end modules ['attr-mkr'] = {
+    version   = 1.001,
+    comment   = "companion to attr-mkr.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local has_attribute = node.has_attribute
+
+local markers = nodes.markers or { }
+nodes.markers = markers
+
+local cache   = { }
+local numbers = attributes.numbers
+local unknown = attributes.private("marker:unknown")
+
+table.setmetatableindex(cache,function(t,k)
+    local k = "marker:" .. k
+    local v = numbers[k] or unknown
+    t[k] = v
+    return v
+end)
+
+function markers.get(n,name)
+    local a = cache[name]
+    return a and has_attribute(n,a) or nil
+end