Re: accepted accents

On Mon, Nov 24, 2003 at 11:55:11AM -0500, Karl Berry wrote:
>     Currently makeinfo warn if @dotless is used with something else than i or
>     j but don't do any checking for the other accents. 
> 
> Is it really desirable to do this?  Couldn't the list be changed, either
> in practice or in the standard, basically arbitrarily?  Do we get

What standard ?

> anything out of checking?

I don't know.  But since makeinfo warned if something else than i or j is
used with dotless, I thought that maybe a warning could be issued with
other accents. The  use of it seems for me to help pointing out 
errors of users.

> The code in makeinfo checks for allowed combinations and outputs ASCII
> simulacrums if the real accent isn't supported.  At least, that's how
> it's supposed to work.  Are you saying it would be better to disallow
> unsupported combinations?  I'm not sure about that.

Not disallow, but warn. And not disallow unsuported combinations, only
combinations which don't make sense in any language.
for example  @v{o} doesn't seems to exist in any language.

> That wasn't intentional.  You're saying texinfo.html has invalid HTML?
> Which combinations?

Not invalid HTML, but invalid accented letter for example @ringaccent{o} 
or @v{o} don't seem to exist in any language.

> Maybe they're supposed to be, but the result of @AA{} and @ringaccent{A}
> are not currently the same (in TeX).  Knuth wrote some fancy stuff to
> position the accent (I guess):
> 
> \def\AA{\leavevmode\setbox0\hbox{!}\dimen@\ht0\advance\dimen@-1ex%
>   \rlap{\raise.67\dimen@\hbox{\char'27}}A}
> 
> (@aa{} and @ringaccent{a} are the same, though.)

Right.

Pat
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