Issue with Boolean values in yaml

[amcnea]

Parsing of false values doesn't seem to be working correctly per: https://mustache.github.io/mustache.5.html

I am using:

libmustache.x86_64     0.4.3-2.el7.remi
mustache.x86_64         0.4.3-2.el7.remi

From the remi repo in centos7

Using the following command: mustache -e -t test-template.mustache -d test-data.yml -o test.out

I would expect all 3 of the tests to be treated as false.

test-template.mustache:

Begin Test1
{{#test1}}
    Item is true
{{/test1}}
{{^test1}}
    Item is false
{{/test1}}
value: {{test1}}
After Test1

Begin Test2
{{#test2}}
    Item is true
{{/test2}}
{{^test2}}
    Item is false
{{/test2}}
value: {{test2}}
After Test2

Begin Test3
{{#test3}}
    Item is true
{{/test3}}
{{^test3}}
    Item is false
{{/test3}}
value: {{test3}}
After Test3

test-data.yml:

test1: no
test2: false
test3:

output file (test.out):

Begin Test1

    Item is true


value: no
After Test1

Begin Test2

    Item is true


value: false
After Test2

Begin Test3


    Item is false

value:
After Test3

[jbboehr]

@amcnea It looks like libyaml, unlike json, doesn't provide any sort of type analysis outside of map, sequence and scalar. This sort of code would be needed, for example:
https://github.com/php/pecl-file_formats-yaml/blob/master/parse.c#L673