12/151 of the snippets provided by rails-snippets start with period, e.g .each . These snippets do not show correctly on the the autocomplete list. And if I reflexively tab/enter after typing .each some other snippet (which does not have period) would get selected. As a quick workaround, I disable autocomplete-snippets. As a long-term solution, I filed an issue here: atom/autocomplete-snippets#67 . However, I am opening this issue here because either this anomaly needs to be documented here, or the snippets should be modified, and the periods removed.