I think the second <%= should be a <%, but I haven’t tried it out.

It is not just anonymous functions, eex does not like non-blocks (like do/end) being broken up between different eex statements, it expects everything to be in a single statement as far as my testing has shown me.

At those times I just break up the template into smaller templates and just pass in the anonymous function calls to them, plus it makes the templates smaller and ‘usually’ more readable.

I’ve not tried this, just thought of it, but you could try:

<%= my_function f, fn arg -> ~e"""
   some html
""" end, fn arg -> ~e"""
  another html
""" end %>

So just embed eex templates in the eex templates (which will not have a run-time overhead at all, eex templates, no matter how deep, inline into an iolist). ^.^

Now it works. Anyway, putting this functions in variables is more readable

Still doesn’t work. I think that EEx just doesn’t like when there is something after anonymous function with html. This also doesn’t work:

<%= my_function f, fn arg -> %>
  some html
<%= end, 2137 %>

missing terminator: end (for "fn" starting at line 3)

So this is the only solution for now

<% template1 = fn arg -> ... end %>
<% template2 = fn arg -> ... end %>
<%= my_function f, template1, template2 %>