1 files changed, 47 insertions, 0 deletions
diff --git a/tex/context/base/trac-tex.lua b/tex/context/base/trac-tex.lua
new file mode 100644
index 000000000..914769c7f
--- /dev/null
+++ b/tex/context/base/trac-tex.lua
@@ -0,0 +1,47 @@
+if not modules then modules = { } end modules ['trac-hsh'] = {
+    version   = 1.001,
+    comment   = "companion to trac-deb.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+-- moved from trac-deb.lua
+
+local saved = { }
+
+function trackers.save_hash()
+    saved = tex.hashtokens()
+end
+
+function trackers.dump_hash(filename,delta)
+    local list, hash, command_name = { }, tex.hashtokens(), token.command_name
+    for name, token in next, hash do
+        if not delta or not saved[name] then
+            -- token: cmd, chr, csid -- combination cmd,chr determines name
+            local kind = command_name(token)
+            local dk = list[kind]
+            if not dk then
+                -- a bit funny names but this sorts better (easier to study)
+                dk = { names = { }, found = 0, code = token[1] }
+                list[kind] = dk
+            end
+            dk.names[name] = { token[2], token[3] }
+            dk.found = dk.found + 1
+        end
+    end
+    io.savedata(filename or tex.jobname .. "-hash.log",table.serialize(list,true))
+end
+
+local delta = nil
+
+local function dump_hash(wanteddelta)
+    if delta == nil then
+        saved = saved or tex.hashtokens()
+        luatex.register_stop_actions(1,function() trackers.dump_hash(nil,wanteddelta) end) -- at front
+    end
+    delta = wanteddelta
+end
+
+directives.register("system.dumphash",  function() dump_hash(false) end)
+directives.register("system.dumpdelta", function() dump_hash(true ) end)