[tex-hyphen] [wl at gnu.org: version data missing in ConTeXt hyphenation patterns]

[Hans Hagen]

On 2/24/2021 11:39 PM, Karl Berry wrote:
> ???

I guess that when I made the script it wasn't available. Anyway, I look 
at it when I have time (probably when Tomas, his students and I also 
look into (new) patterns for (newly) supported languages).

I don't understand the "really bad" because I can't remember any context 
user bothering about it (nowadays changes in fonts and handling of 
features are more influential). Also, we currently ship only the 
versions of patterns that Arthur and Mojca consider to be okay (the last 
ones). Users can easily freeze a system that they need for a specific 
long term stable situation. I'm pretty sure that when patterns improve 
users are happy to check their document rendering (tex often doesn't 
hyphenate that much anyway) and never check the files related to 
patterns (so no one would notice a version number).

So, I'll add it to the stack of todo's, but with low priority,

Hans

> Date: Wed, 24 Feb 2021 10:29:06 +0100 (CET)
> From: Werner LEMBERG <wl at gnu.org>
> To:  <texlive at tug.org>
> Subject: version data missing in ConTeXt hyphenation patterns
> 
> 
> [Since I'm not sure who is responsible for generating the pattern
>   files for ConTeXt I'm writing to this list.]
> 
> If I look into file
> 
>    tex/context/patterns/mkiv/lang-de.lua
> 
> I see the following.
> 
>    ["metadata"]={
>      ["mnemonic"]="de",
>      ["source"]="hyph-de-1996",
>      ["texcomment"]="% no comment",
>    }
> 
> However, version information is completely missing.  For example, file
> 
>    tex/generic/hyph-utf8/patterns/tex/hyph-de-1996.tex
> 
> contains
> 
>    % version: 2019-04-04
> 
> [Arthur worked hard to make the comment format uniform for all
> pattern files in `hyph-utf8`!]
> 
> This omission is really bad IMHO, since the version of the patterns
> are essential to get identical line breaks for older documents.
> 
> I guess it shouldn't be too difficiult to update the `mtxrun` script,
> making it add
> 
>    ["version"]="2019-04-04"
> 
> to the 'metadata' block.  Or maybe it's better to make it update the
> `.rme` files with the corresponding information.
> 
> 
>      Werner
> 


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