Provide simpler syntax for translated text

[rowanseymour]

Or make all plain text optionally translatable?

Putting some translatable text inside a tag (e.g. <b>{% trans "Hello" %}</b>) is a very common pattern but currently requires 2 lines, e.g.

%b
  - trans "Hello"

Would be nice to make this pattern more succinct, or possibly make all plain text optionally translatable? That is...

%b Hello

Would become <b>{% trans "Hello" %}</b> if "auto-i18n" is enabled.

[nicpottier]

Was thinking another option that might have a nice parallel would be using _

Maybe?

%b_ Hello

[nicpottier]

Though I do like the idea of it being automagic