Hello, Philip Taylor (RHBNC) wrote: > >> So, I think, that the correct way to solve this problem is to > >> set the values of \lccode, \uccode, \sfcode and \mathcode, > >> in a macros which switches to a language (\selectlanguage > >> in Babel). > > >> Are there some ready means to preserve the `language environment' > >> before switching to another language and to restore it after > >> changing back (or to some third language)? > >> Is it a normal practice to `tune' \lccode, \uccode, \sfcode > >> and \mathcode values in a language-switching mechanism? > > One idea under consideration for e-TeX V2 is the option to save and > restore an entire set of register values (e.g. the current set of > lccodes, etc); this may prove useful in solutions to this question. Yes, that would be a good option. But I think that \uppercase and \lowercase will not work correctly even with this option if the argument of \uppercase (or \lowercase) is a multilingual text, and languages have different (inconsistent) \uccode and \lccode values. To correct his, one needs to redefine TeX's primitives as I wrote in my previous letter. BTW, it is interesting to know, what is the current status of e-TeX? Is it widely used? Is there a support for new e-TeX's primitives available in LaTeX? -- With best regards, Vladimir.