only_child_is_protolanguage(<span class="searchmatch">tree</span>, options, protolanguage_of) return (options.<span class="searchmatch">family</span>_under_protolanguage or options.protolanguage_under_<span class="searchmatch">family</span>) and <span class="searchmatch">tree</span>[1] and protolanguage_of[tree...
--[=[ Authors: [[<span class="searchmatch">User</span>:kc_kennylau]], [[<span class="searchmatch">User</span>:JohnC5]], [[<span class="searchmatch">User</span>:Erutuon]], [[<span class="searchmatch">User</span>:Suzukaze-c]], [[<span class="searchmatch">User</span>:Theknightwho]], [[<span class="searchmatch">User</span>:<span class="searchmatch">AryamanA</span>]] --]=] local export...