Re: Removing set-unibyte-charset

[Kenichi Handa <handa@m17n.org>]

In article <jwv4pbmbgc2.fsf-monnier+emacs@gnu.org>, Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> > Are you going to change the
>>> > behaviour of unibyte<->multibyte conversion?

>>> Clearly that will change it, indeed.
>>> E.g. string-make-multibyte == string-to-multibyte after that removal,
>>> for example.

> > Ok, I see.  It's a big overhaul.  :-)

> What do you mean by a big overhaul?  The first step is nothing more than
> removing Fset_unibyte_charset (and removing the few calls to it).

Yes, but...

> After that, many more changes can be applied, but these are nothing more
> than optimizations (e.g. remove unibyte-charset since it's constant,
> ...).

I've thought that you are going to change all operations
that convert unibyte char/string/buffer-contents to
multibyte (insert, concat, search, re-search, etc).
Currently they do "make"-conversion; i.e. convert each
unibyte character to multibyte by using unibyte-charset.
Changing all of them to "to"-conversion is a big (but not
that difficult) work, I think.

---
Kenichi Handa
handa@ni.aist.go.jp