Re: Lua 5.0 and 5.1 together

[Tomas <tomas@...>]

> I already tried suggesting this
> (http://lua-users.org/lists/lua-l/2006-02/msg00461.html).

  LUA_5_1_INIT
  LUA_5_1_PATH
  LUA_5_1_CPATH

	The ability to define these PATHs with a variable part would help:

LUA_PATH="/usr/local/share/lua/$VERSION_NUMBER/?.lua..."

	A tricky init-file could do the job either:

if VERSION_NUMBER == "5.0" and not _COMPAT51 then
	assert(loadfile("/usr/local/share/lua/5.0/compat-5.1.lua"))()
end
package.path = string.gsub (package.path, "5.%d+", VERSION_NUMBER)
...

	On both cases, VERSION_NUMBER could be obtained from _VERSION
variable:

VERSION_NUMBER = string.gsub (_VERSION, "^Lua (%d+%.%d+).*$", "%1")

	I think this approch is better than changing .c files don't you
think?

> We can get by without the Lua authors making a standard, just as we do
> regarding versioned names of the lua and luac executables.  Really only
> the people doing packaging need to agree.
	This (the support (?) for multiple installed versions) is an
old subject usually standed out by them, unfortunately.

	Tomas