local shell=require("shell")
local args=shell.parse(...)

if#args==0 then
args={"/lib/core/lua_shell.lua"}
end

local filename=args[1]
local buffer,script,reason
buffer=io.lines(filename,"*a")()
if buffer then
buffer=buffer:gsub("^#![^\n]+","")
script,reason=load(buffer,"="..filename)
else
reason=string.format("could not open %s for reading",filename)
end

if not script then
io.stderr:write(tostring(reason).."\n")
os.exit(false)
end

buffer,reason=pcall(script,table.unpack(args,2))
if not buffer then
io.stderr:write(type(reason)=="table"and reason.reason or tostring(reason),"\n")
os.exit(false)
end