Re: Adding support for ISO-8859-1 in printed manuals

[Paulo Sequeira]

Karl Berry escribió:
> Great.  By the way, if you feel like it, I imagine it would not be too
> hard to define most of Latin2 (= ISO-8859-2) and Latin9 (= ISO-8859-15).

Karl,

I'm attaching the patch for @documentencoding that provides the
character definitions inside texinfo.tex

I was delayed by some complications that arised from subtleties of TeX's
semantics (at times, I felt like if TeX was laughing at me because I
couldn't have them done right :) )

Implemented is the basic support for ISO-8859-1 and also for
ISO-8859-15. ISO-8859-2 will have to wait a little more.

I also fixed a bug that my original patch had: accute i (í) didn't get
typeset well in the table of contents. That was fixed by adding \ptexi 
as a dummy word in the macros that write the .toc file.

The disclaimer form to address@hidden was also just sent.

Let me know of any corrections that need to be done.

--
Paulo Sequeira

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Index: texinfo.tex
===================================================================
RCS file: /sources/texinfo/texinfo/doc/texinfo.tex,v
retrieving revision 1.223
diff -r1.223 texinfo.tex
6c6
< \def\texinfoversion{2006-11-08.17}
---
> \def\texinfoversion{2006-11-24.02}
3575a3576
>   \definedummyword\ptexi
7130,7132d7130
< % @documentencoding should change something in TeX eventually, most
< % likely, but for now just recognize it.
< \let\documentencoding = \comment
7133a7132,7315
> %% This macro sets the catcode of characters 128 through 255 to the
> %% specified number.  -- PSG
> 
> \def\setnonasciicharscatcode#1{
>    \count255=128
>    \loop\ifnum\count255<256
>       \global\catcode\count255=#1
>       \advance\count255 by 1
>    \repeat
> }
> 
> % @documentencoding sets the definition of non-ASCII characters
> % according to the specified encoding.
> 
> %% First, make active non-ASCII characters in order for them to be
> %% correctly categorized when TeX reads the replacement text of
> %% @documentencoding.  Trying to make them active when the macro is
> %% expanded, althought required also, is too late; funny, isn't it?  --
> %% PSG
> \setnonasciicharscatcode\active
> 
> \parseargdef\documentencoding{%
>   % A message to be logged when using a character that isn't available
>   % the default font encoding (OT1).
>   \def\missingcharmsg##1{\message{Character missing in current font: ##1.}}
> 
>   \def\declaredencoding{\csname #1 \endcsname}
> 
>   % Supported encodings: names converted to tokens in order to be able
>   % to compare them with \ifx.
> 
>   \def\latone{\csname ISO-8859-1 \endcsname}
>   \def\latnine{\csname ISO-8859-15 \endcsname}
>   \def\lattwo{\csname ISO-8859-2 \endcsname}
>   \def\ascii{\csname US-ASCII \endcsname}
> 
>   \ifx \declaredencoding \ascii
>     % ASCII: Nothing needs to be done
>     \relax
> 
>   \else \ifx \declaredencoding \lattwo
>     % Latin-2: Not yet implemented
>     \relax
> 
>   \else % Latin-1 or Latin-9
>     % Make characters active again when macro is expanded.
>     \setnonasciicharscatcode\active
> 
>     % Character definitions for Latin-1 are used by default.
> 
>     \gdef^^a0{\nobreakspace}
>     \gdef^^a1{\textexclamdown}
>     \gdef^^a2{\textcent}
>     \gdef^^a3{\pounds}
>     \gdef^^a4{\missingcharmsg{general currency symbol}}
>     \gdef^^a5{\missingcharmsg{pound sterling}}
>     \gdef^^a6{\missingcharmsg{broken vertical bar}}
>     \gdef^^a7{\S}
>     \gdef^^a8{\"{}}
>     \gdef^^a9{\copyright}
>     \gdef^^aa{$^a$}
>     \gdef^^ab{\missingcharmsg{left guillemot}}
>     \gdef^^ac{$\lnot$}
>     \gdef^^ad{\-}
>     \gdef^^ae{\registeredsymbol}
>     \gdef^^af{\={}}
> 
>     \gdef^^b0{$^\circ$}
>     \gdef^^b1{$\pm$}
>     \gdef^^b2{$^2$}
>     \gdef^^b3{$^3$}
>     \gdef^^b4{\'{}}
>     \gdef^^b5{$\mu$}
>     \gdef^^b6{\P}
> 
>     \gdef^^b7{$^.$}
>     \gdef^^b8{\c\ }
>     \gdef^^b9{$^1$}
>     \gdef^^ba{$^o$}
> 
>     \gdef^^bb{\missingcharmsg{right guillemot}}
>     \gdef^^bc{$1\over4$}
>     \gdef^^bd{$1\over2$}
>     \gdef^^be{$3\over4$}
>     \gdef^^bf{?`}
> 
>     \gdef^^c0{\`A}
>     \gdef^^c1{\'A}
>     \gdef^^c2{\^A}
>     \gdef^^c3{\~A}
>     \gdef^^c4{\"A}
>     \gdef^^c5{\r A}
>     \gdef^^c6{\AE}
>     \gdef^^c7{\c C}
>     \gdef^^c8{\`E}
>     \gdef^^c9{\'E}
>     \gdef^^ca{\^E}
>     \gdef^^cb{\"E}
>     \gdef^^cc{\`I}
>     \gdef^^cd{\'I}
>     \gdef^^ce{\^I}
>     \gdef^^cf{\"I}
> 
>     \gdef^^d0{\missingcharmsg{capital Eth}}
>     \gdef^^d1{\~N}
>     \gdef^^d2{\`O}
>     \gdef^^d3{\'O}
>     \gdef^^d4{\^O}
>     \gdef^^d5{\~O}
>     \gdef^^d6{\"O}
>     \gdef^^d7{$\times$}
>     \gdef^^d8{\O}
>     \gdef^^d9{\`U}
>     \gdef^^da{\'U}
>     \gdef^^db{\^U}
>     \gdef^^dc{\"U}
>     \gdef^^dd{\'Y}
>     \gdef^^de{\missingcharmsg{capital Thorn}}
>     \gdef^^df{\ss}
> 
>     \gdef^^e0{\`a}
>     \gdef^^e1{\'a}
>     \gdef^^e2{\^a}
>     \gdef^^e3{\~a}
>     \gdef^^e4{\"a}
>     \gdef^^e5{\r a}
>     \gdef^^e6{\ae}
>     \gdef^^e7{\c c}
>     \gdef^^e8{\`e}
>     \gdef^^e9{\'e}
>     \gdef^^ea{\^e}
>     \gdef^^eb{\"e}
>     \gdef^^ec{\`\ptexi}
>     \gdef^^ed{\'\ptexi}
>     \gdef^^ee{\^\ptexi}
>     \gdef^^ef{\"\ptexi}
> 
>     \gdef^^f0{\missingcharmsg{small eth}}
>     \gdef^^f1{\~n}
>     \gdef^^f2{\`o}
>     \gdef^^f3{\'o}
>     \gdef^^f4{\^o}
>     \gdef^^f5{\~o}
>     \gdef^^f6{\"o}
>     \gdef^^f7{$\div$}
>     \gdef^^f8{\o}
>     \gdef^^f9{\`u}
>     \gdef^^fa{\'u}
>     \gdef^^fb{\^u}
>     \gdef^^fc{\"u}
>     \gdef^^fd{\'y}
>     \gdef^^fe{\missingcharmsg{small thorn}}
>     \gdef^^ff{\"y}
> 
>   % Test exactly which encoding is being declared.
>   \ifx \declaredencoding \latone 
>     % Latin-1: Characters already set up for this encoding: relax.
>     \relax
> 
>   \else \ifx \declaredencoding \latnine
>     % Latin-9: Update characters that differ from Latin-1
> 
>     \gdef^^a4{\euro}
>     \gdef^^a6{\v S}
>     \gdef^^a8{\v s}
>     \gdef^^b4{\v Z}
>     \gdef^^b8{\v z}
>     \gdef^^bc{\OE}
>     \gdef^^bd{\oe}
>     \gdef^^be{\"Y}
> 
>   \else 
>     \errmessage{Unknown document encoding}
> 
>   \fi % latin9
>   \fi % latin1
>   \fi % latin2
>   \fi % ascii
> }
> 
> %% Make non-ASCII characters just printable again for compatibility with
> %% existing Texinfo documents that may use them, even without declaring a
> %% document encoding -- PSG
> \setnonasciicharscatcode \other

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