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Re: Text search dictionary vs. the C locale

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twoflower <standa.kurik@xxxxxxxxx> writes:
> I am having problems creating an Ispell-based text search dictionary for
> Czech language.

> Issuing the following command:

> create text search dictionary czech_ispell (
>   template = ispell,
>   dictfile = czech_ispell,
>   affFile = czech_ispell
> );

> ends with

> ERROR:  syntax error
> CONTEXT:  line 252 of configuration file
> "/usr/share/postgresql/9.6/tsearch_data/czech_ispell.affix": " . > TŘIA

> The dictionary files are in UTF-8. The database cluster was initialized with
> initdb --locale=C --encoding=UTF8

Presumably the problem is that the dictionary file parsing functions
reject anything that doesn't satisfy t_isalpha() (unless it matches
t_isspace()) and in C locale that's not going to accept very much.

I wonder why we're doing it like that.  It seems like it'd often be
useful to load dictionary files that don't match the database's
prevailing locale.  Do we really need the t_isalpha tests, or would
it be good enough to assume that anything that isn't t_isspace is
part of a word?

			regards, tom lane


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