Updated luatex manual.

git-svn-id: svn://tug.org/texlive/trunk@58499 c570f23f-e606-0410-a88d-b1316a301751

2 files changed, 20 insertions, 2 deletions

diff --git a/Master/texmf-dist/doc/luatex/base/luatex-tex.tex b/Master/texmf-dist/doc/luatex/base/luatex-tex.tex
index c9ca45158c3..67e22d73555 100644
--- a/Master/texmf-dist/doc/luatex/base/luatex-tex.tex
+++ b/Master/texmf-dist/doc/luatex/base/luatex-tex.tex
@@ -1,4 +1,4 @@
-% language=uk
+% engine=luatex language=uk
 
 % lua.newtable
 
@@ -1971,14 +1971,32 @@ values from \type {texmf.cnf} are used.
 
 You can kick in your own nesting level visualizer, for instance:
 
-\stoptyping
+\starttyping
 callback.register("input_level_string",function(n)
+         if tex.tracingmacros > 0 and tex.count.tracingstacklevels > 0 then
     if tex.tracingmacros > 1 then
         return "! " .. string.rep(">",n) .. " "
     end
 end)
 \stoptyping
 
+Or, in sync with other engines (not checked):
+
+\newcount\tracingstacklevels
+
+\starttyping
+\directlua {
+  callback.register("input_level_string", function(n)
+    if tex.tracingmacros > 0 then
+      local l = tex.count.tracingstacklevels
+      if l > 0 then
+        return string.rep("~",l) .. string.rep(".",n-l)
+      end
+    end
+  end)
+}
+\stoptyping
+
 \stopsection
 
 \startsection[title={The \type {texio} library}][library=texio]
diff --git a/Master/texmf-dist/doc/luatex/base/luatex.pdf b/Master/texmf-dist/doc/luatex/base/luatex.pdf
index 8504e3bf56d..b044846b7cf 100644
--- a/Master/texmf-dist/doc/luatex/base/luatex.pdf
+++ b/Master/texmf-dist/doc/luatex/base/luatex.pdf