1 files changed, 48 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/trac-ctx.lua b/Master/texmf-dist/tex/context/base/trac-ctx.lua
new file mode 100644
index 00000000000..706e7a2447a
--- /dev/null
+++ b/Master/texmf-dist/tex/context/base/trac-ctx.lua
@@ -0,0 +1,48 @@
+if not modules then modules = { } end modules ['trac-ctx'] = {
+    version   = 1.001,
+    comment   = "companion to trac-ctx.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local commands = commands
+local context  = context
+local register = trackers.register
+
+local textrackers   = tex.trackers   or { }
+local texdirectives = tex.directives or { }
+
+tex.trackers   = textrackers
+tex.directives = texdirectives
+
+storage.register("tex/trackers",  textrackers,  "tex.trackers")
+storage.register("tex/directives",texdirectives,"tex.directives")
+
+local function doit(category,tag,v)
+    local tt = category[tag]
+    if tt then
+        context.unprotect()
+        context(v and tt[1] or tt[2]) -- could be one call
+        context.protect()
+    end
+end
+
+local function initialize(category,register)
+    for tag, commands in next, category do
+        register(tag, function(v) doit(category,tag,v) end) -- todo: v,tag in caller
+    end
+end
+
+local function install(category,register,tag,enable,disable)
+    category[tag] = { enable, disable }
+    register(tag, function(v) doit(category,tag,v) end) -- todo: v,tag in caller
+end
+
+function commands.initializetextrackers  () initialize(textrackers  ,trackers  .register  ) end
+function commands.initializetexdirectives() initialize(texdirectives,directives.register) end
+
+-- commands.install(tag,enable,disable):
+
+function commands.installtextracker  (...) install(textrackers  ,trackers  .register,...) end
+function commands.installtexdirective(...) install(texdirectives,directives.register,...) end