From karl ¡÷ freefriends.org  Mon Aug 29 07:51:24 2022
From: karl ¡÷ freefriends.org (Karl Berry)
Date: Sun, 28 Aug 2022 16:51:24 -0600
Subject: [issue:445] *ptex --version should not require texmf.cnf
Message-ID: <mailman.445.10.1661727089.1190.issue@texjp.org>

Hi - as of perhaps a month or so ago (I believe), (e)(u)ptex has started
looking for texmf.cnf when given --help and --version before giving the
expected output. The other engines don't look for texmf.cnf, so far as I
know.

It is better for those basic options to work without requiring
texmf.cnf, or anything else, to be installed/findable, e.g., when
running in the build directory. The result is the warning about
"configuration file texmf.cnf not found".

For example,

cd .../Build/source/Work/texk/web2c
./ptex --version
warning: kpathsea: configuration file texmf.cnf not found in these directories: [long long list omitted]
..
pTeX 3.141592653-p4.0.0 (utf8.euc) (TeX Live 2023/dev)

Compared with:
$ ./tex --version
TeX 3.141592653 (TeX Live 2023/dev)

(that is, no warning is emitted)

Thanks,
Karl

From h_kitagawa2001 ¡÷ yahoo.co.jp  Mon Aug 29 13:42:32 2022
From: h_kitagawa2001 ¡÷ yahoo.co.jp (Hironori KITAGAWA)
Date: Mon, 29 Aug 2022 13:42:32 +0900
Subject: [issue:446] Re: *ptex --version should not require texmf.cnf
In-Reply-To: <mailman.445.10.1661727089.1190.issue@texjp.org>
References: <mailman.445.10.1661727089.1190.issue@texjp.org>
Message-ID: <mailman.446.11.1661748154.1190.issue@texjp.org>

Hello Karl and all,

> Hi - as of perhaps a month or so ago (I believe), (e)(u)ptex has started
> looking for texmf.cnf when given --help and --version before giving the
> expected output. 
The place where texmfcnf.cnf is looked for is

void init_default_kanji (const_string file_str, const_string internal_str)
{
    ...
    p = kpse_var_value ("guess_input_kanji_encoding");
    ...
}

in kanji.c. It is executed (as initkanji()) from maininit().

It looks like "guess_input_kanji_encoding" information is not needed
before parse_options(). So one approach is:

maininit(){
  char *p;
  ...
  initkanji(); // move "guess_input_kanji_encoding" stuff from kanji.c ...
  infile_enc_auto = 2; // "not set"
  ...
  parse_options(...);
  if (infile_enc_auto == 2) {
    // ... to here.
    p = kpse_var_value ("guess_input_kanji_encoding");
    if (p) {
        if (*p == '1' || *p == 'y' || *p == 't')
            infile_enc_auto = 1;
        free(p);
    }
  }
  ...
}


-- 
Hironori KITAGAWA <h_kitagawa2001 ¡÷ yahoo.co.jp>