template, use {{<span class="searchmatch">entryname</span>}}. Within a module, use Module:languages#Language:makeEntryName. For testcases, see Module:<span class="searchmatch">zlw</span>-<span class="searchmatch">slv</span>-<span class="searchmatch">entryname</span>/testcases. makeEntryName(text...
"4":"Cyrs,Glag,Latn"},"<span class="searchmatch">zlw</span>-<span class="searchmatch">slv</span>":{"entry_name":"<span class="searchmatch">zlw</span>-<span class="searchmatch">slv</span>-<span class="searchmatch">entryname</span>","type":"regular","1":"Slovincian","2":36822,"3":"<span class="searchmatch">zlw</span>-pom","4":"Latn"},"<span class="searchmatch">zlw</span>...