Re: [AUCTeX-devel] Insertion of braces when the last argument of a macro is optional

[Tassilo Horn]

Mosè Giordano <address@hidden> writes:

Hi Mosè,

> in *TeX empty groups aren't harmless and I think AUCTeX shouldn't
> append braces to a macro when its last argument is optional.

I'm not sure.  I think that depends on how the macro is question has
been defined, and AUCTeX cannot find out.  For example, take this macro
with just one optional argument:

  \newcommand{\jimgoes}[1][surfing]{Jim goes #1}

Then these all look good:

  \jimgoes[fishing] and then drinks a beer.
  \jimgoes[fishing]{} and then drinks a beer.
  \jimgoes{} and then drinks a beer.

But here you get "surfingand" cause the macro eats the next whitespace:

  \jimgoes and then drings a beer.

Bye,
Tassilo