On 10 August 2015 at 19:47, Gavin Smith <gavinsmith0...@gmail.com> wrote: > The space itself is being expanded. Since space was \let equal to \tie > with \sepspaces when \example was opened, the space is expanding to > the definition of \tie. > > Adding an extra line > > \catcode`\ =\other > > eliminates this expansion.
Because the definition of space isn't changed when the macro body is read, I believe that multiple spaces are collapsed to one by TeX's input processor. I found that this could give an inconsistency in an @example. With the following input: @macro Mac @example x x @end example @end macro @example x x @end example @Mac the first space is doubled but the second, from the macro expansion, isn't. I wondered if a @macro within an @example would break for a similar reason, but it breaks for a different reason, not that anybody would ever want to do that.
