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[fix] replace language_support by a language/region view

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Many WEB-search engines (e.g. startpage) response best results if a **region**
is selected, most often a language filter is also in the properties of the
WEB-search engine.

hint::

   The **search language** should not be mixed: sometimes the language argument
   is just the language of the UI with none effect on the result list.

To summarize:

Some WEB-search engines have language codes (e.g. `ca`) in their properties,
other have a region codes (e.g. `ca-ES`), some have regions and languages in
their properties (e.g. startpage) and other engine do not have any language or
region support.

In the past we generalized *language* over all kind of engines without taking
into mind that several WEB-search engines have best results when there is a
region selected.

  This *language-centric* view in SearXNG is misleading when we need
  region-codes to parameterize a engine request!

This patch replaces the *language-centric* view by a "language / region" view.

Conclusions:

With regions we can't say any longer that a engine supports *this or that*
language. By example: when the user selects 'zh' and a engine supports only
region codes like 'zh-TW' or 'zh-CN' we do not what results the user expects /
similar with 'en' or 'fr when the engine needs a region tag.

- Since it is unclear what the user expects by his language selection, we can't
  assert a property that says: "supports_selected_language"

  The feature is replaced in the UI by the wider sense of "language_support",
  what stands for:

    The engine has some kind of language support, either
    by a region tag or by a language tag.

- A list of "supported_languages" does not make sense when there are regions
  responsible for the result of an engine.

  The "supported_languages" has been removed from the /config URL.

- The `has_language` test in the `searx/search/checker/impl.py` has been removed
  since it does not cover engines with region support.

  If there is a need for such a test we can implement new tests after all
  engines with language (region) support has been moved to the *supported
  properites* scheme (`'type': 'engine_properties'`) / see commit previous
  commit:

    [mod] engines_languages.json: add new type EngineProperties

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser 2022-04-19 10:49:49 +02:00
parent da659123c1
commit 3df7d50df0
4 changed files with 4 additions and 40 deletions
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10
searx/search/processors/online.py
View file

@ -212,16 +212,6 @@ class OnlineProcessor(EngineProcessor):
'test': ['unique_results'],
}
if getattr(self.engine, 'supported_languages', []):
tests['lang_fr'] = {
'matrix': {'query': 'paris', 'lang': 'fr'},
'result_container': ['not_empty', ('has_language', 'fr')],
}
tests['lang_en'] = {
'matrix': {'query': 'paris', 'lang': 'en'},
'result_container': ['not_empty', ('has_language', 'en')],
}
if getattr(self.engine, 'safesearch', False):
tests['safesearch'] = {'matrix': {'query': 'porn', 'safesearch': (0, 2)}, 'test': ['unique_results']}