Cli integration raises HTML validation error

[WuMingIT]

Small 20 kB .html opens just fine with Safari and Firefox. Despite that mustache cli raises an error:

/usr/local/lib/ruby/gems/3.1.0/gems/mustache-1.1.1/lib/mustache/parser.rb:286:in `error': Unclosed tag (Mustache::Parser::SyntaxError)

Since .html is fine I don't really care about validation, just need tags being replaced. Any way I can achieve that?

[WuMingIT]

File was generated with delimiters separated from keywords by html tags:

{{</span></span></font></font><font face="Times New Roman, serif"><font size="3" style="font-size: 12pt"><span lang="it-IT"><span style="font-weight: normal">KEYWORD</span></span></font></font><font face="Times New Roman, serif"><font size="3" style="font-size: 12pt"><span lang="it-IT"><span style="font-weight: normal">}}

so mustache entire tag was not recognized. Removing the extra tags it now works as expected.