Effect of newline in macro definition

In the Texinfo manual, under Macro Details, there is this example: @macro linemac @cindex whatever @c @end macro ... foo @linemac bar It states: Without the '@c', there will be a unwanted blank line between the

Re: real subscripts and superscripts?

can't be that difficult to implement a suitable \superscript macro. Indeed. I committed the changes to texinfo.tex (and the documentation) so that @sub/@sup stay in math mode inside @math, and do a textual sub/superscript outside @math. The remaining complication (unsolved) is if someone