[ANN] Gel 0.2

["Remo Dentato" <rdentato@...>]

An update version of gel is available at http://gel-tool.sourceforge.net.
This version has a "gema-like" interface and no longer a Lua interpreter
interface.

I've also added a little bit of documentation.

To make you, hopefully, a little bit more interested here is an example.
Let's imagine we have to solve the following problem:

<< Collect identifiers from a file and sourround them with "<id>" and
"</id>" tags. If it's not the first time you encounter that identifers, add
the attribute "first" to the id tag with the line where you first
encountered it as value. At the end, write a sorted index of identifiers
with the line where they first appear.>>

Here is a possible solution in gel:

----8<---- cut -----8<---- cut -----8<---- cut -----8<----
![
id_ln={}; n_id={}; table.setn(n_id,0)

function check_id(id,ln)
  local t=""
  if id_ln[id] then
    t=" first=\""..id_ln[id].."\""
  else
    id_ln[id]=ln
    table.insert(n_id,id)
  end
  return "<id"..t..">"..id.."</id>"
end

function sort_id()
  table.sort(n_id)
  gel.write("\n")
  for n,id in pairs(n_id) do
    gel.write(id.." "..id_ln[id].."\n")
  end
end
!]

<I>=@lua{return check_id("$0",@line)}
\Z=@lua{sort_id()}

----8<---- cut -----8<---- cut -----8<---- cut -----8<----

Short enough, isn't it?

Enjoy,
                                                Remo