Fail to render sections: attempt to call method 'lookup' (a nil value).

[borcut]

Tested on Windows 10 with lustache 1.3.1-0 and Lua 5.1.5.

While trying to render some of the examples from the readme I got the following error:

lua: .\lustache.lua:404: attempt to call method 'lookup' (a nil value)
stack traceback:
        .\lustache.lua:404: in function '_name'
        .\lustache.lua:202: in function <.\lustache.lua:188>
        (tail call): ?
        .\lustache.lua:347: in function '_section'
        .\lustache.lua:194: in function <.\lustache.lua:188>
        (tail call): ?
        (tail call): ?
        test-lustache-sections.lua:18: in main chunk
        [C]: ?

The test file was

local lustache = require "lustache"
local view_model, template

view_model = {
  stooges = {
    { name = "Moe" },
    { name = "Larry" },
    { name = "Curly" },
  }
}

template = [[
{{#stooges}}
* {{name}}
{{/stooges}}
]]

print(lustache:render(template, view_model))

The first bug I found was in the function Context:lookup(name), where the call to string_find interprets "." as a pattern (search any character). The line

if string_find(name, ".") > 0 then

should be changed to

if string_find(name, ".", 1, true) then

The second bug is when the function Context:new(view, parent) sets the wrong metatable when called from Renderer:_section(token, context, callback, originalTemplate). My workaround was to change the two callback(context:push(v), self) calls into callback(Context:push(v), self).

lustache-sections.zip