Implementing template fragments for EEx

al2o3cr · March 8, 2024, 2:27am

Oops, I typed my earlier response too fast without checking the version of the docs I was referencing - the EEx sigil used to be in Phoenix.HTML but was deprecated.

You could reuse the implementation, though. Apart from the Phoenix-specific engine, there’s no other coupling to that package:

github.com/phoenixframework/phoenix_html

lib/phoenix_html.ex

ef2df70d7


      
          @doc """
          Provides `~e` sigil with HTML safe EEx syntax inside source files.
          
          Raises on attempts to interpolate with `#{}`, so `~E` should be preferred.
          
              iex> ~e"\""
              ...> Hello <%= "world" %>
              ...> "\""
              {:safe, [[["" | "Hello "] | "world"] | "\\n"]}
          
          """
          defmacro sigil_e(expr, opts) do
            handle_sigil(expr, opts, __CALLER__.line)
          end
          
          @doc """
          Provides `~E` sigil with HTML safe EEx syntax inside source files.
          
          Does not raise on attempts to interpolate with `#{}`, but rather shows those
          characters literally, so it should be preferred over `~e`.

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