Uwe Stöhr <[email protected]> writes: >> --- is not a command in TeX, it is a ligature. > > This is not correct, neither the Unicode standard nor typographic > books know a ligature of dashes, see also > http://en.wikipedia.org/wiki/Typographic_ligature
-- and -- are implemented in TeX as ligatures in the font, as are ?`, !`, `` and ''. > mdash and ndash are characters of its own. "---" and "--" are LaTeX > commands creating these characters. If by command, you mean 'macros' this is wrong. The - character is not active and thus it cannot trigger a macro. The actual coding is done in the font itself. JMarc
