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Require [articles] setting in elision filter (#43083)

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We should throw an exception at construction time if a list of
articles is not provided, otherwise we can get random NPEs during
indexing.

Relates to #43002
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Alan Woodward 2019-06-27 08:56:26 +01:00 • committed by GitHub
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docs/reference/analysis/tokenfilters/elision-tokenfilter.asciidoc
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@ -4,8 +4,9 @@
A token filter which removes elisions. For example, "l'avion" (the
plane) will tokenized as "avion" (plane).
Accepts `articles` parameter which is a set of stop words articles. Also accepts
`articles_case`, which indicates whether the filter treats those articles as
Requires either an `articles` parameter which is a set of stop word articles, or
`articles_path` which points to a text file containing the stop set. Also optionally
accepts `articles_case`, which indicates whether the filter treats those articles as
case sensitive.
For example: