current charset guessing

Werner Koch wk at
Tue Jan 11 15:54:43 CET 2005

On Fri, 7 Jan 2005 18:23:34 +0100 (CET), Alain Bench said:

>     Thanks: It works in many cases, but fails on implicit charsets,
> ambiguous names, or platform specific spellings. Examples:

Okay.  I looked at it but to fix this we would need to reimplement
everything from libiconv or check whether a proper libiconv is
available.  This is something we should not not.

>     Note in such locales, "make check" also fails:

> | ./gpg_dearmor > ./pubring.gpg < ./pubring.asc
> | gpg: conversion from `utf-8' to `cp-1252' not available

That should not anymore fail because it has been changed to a warning.

> table. BTW the output of nl_langinfo(CODESET) also needs sanitizing on
> some platforms.

Well, this is something libiconv should care about and not GnuPG.

>     CP-1252 is a superset of Latin-1 with 27 more chars. Example one can
> write "Lecœur" (oe ligature) in CP-1252, not in Latin-1:

I see. Removed that.

>     I'd say treating CP-1252 as Latin-1 is good enough and better than
> nothing when iconv is unavailable. But it's suboptimal when iconv is

We better make shure that iconv is available.

>     Looking in libiconv 1.9.2 source: No such alias. But in
> libiconv-1.9.2/libcharset/lib/localcharset.c there is a whole set of
> aliases:

I adapted that list and use it for Windows.

>     Good: Thanks. ISO-8859-15 is Latin-9, just to confuse us:


>     Hum... Libcharset seems to call GetACP() only, never
> GetConsoleOutputCP(). IIUC that would be false for console apps? I'm

GetConsoleOutputCP is the correct thing to do but it does not harm to
fall back to getACP.

>     US-Ascii is not Latin-1. I frequently use a 7 bits terminal in a
> locale, with or without //TRANSLITeration. That
> false aliasing would break it. It would also break any case where
> locales are unset and charset is different. Bad idea, I'd say.

That is right but we got a lot of complaints about these warnings from
US people and it seesm reasonable that many more machines are not
configured properly for Latin-1 than those who are explicitly using
ascii.  Given that keys may contain any characters and as a user you
don't have any control over it becuase this is a public information,
assuming Latin-1 still seems to be working solution for me.

I considere to make a installer based version of iconv.dll to ease
installation and give hints during GnupG installation on the need of
that dll. The 1.4.1 binary distribution will use an NSIS based



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