Key names with special characters and whitespace

[aymericbouzy]

My template :

{{#🚀}}
  launch!
{{/🚀}}

My dictionary :

{
  "🚀" => true
}

I would expect the following result :

launch!

Instead I get the error :

Mustache::Parser::SyntaxError: Illegal content in tag
  Line 1
    {{#🚀}}
      ^

This example succeeds on https://mustache.github.io/#demo

I get the same error with the following keys (instead of 🚀) : "Foo Bar", "Jésus", ...

[drewish]

I think that's because of the regex used for the ALLOWED_CONTENT constant:

mustache/lib/mustache/parser.rb

Line 81 in 0207b73

ALLOWED_CONTENT = /(\w|[?!\/.-])*/

Per the regex docs

/\w/ - A word character ([a-zA-Z0-9_])

Which would prevent the emoji, space or accented character you listed.