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https://issues.apache.org/jira/browse/LUCENE-9093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17002740#comment-17002740
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Nándor Mátravölgyi commented on LUCENE-9093:
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How should I make pull requests with the different default fragalign [~dsmiley]
?
My guess is that the PR to master should have the default fragalign of 0.5 (and
modified docs), while I also make a PR to the 8x and 7x branch with the
original patch. This way after the master is accepted and merged to the others,
their PR can be accepted and cherry picked on the differences.
I'll wait for your input on this.
> Unified highlighter with word separator never gives context to the left
> -----------------------------------------------------------------------
>
> Key: LUCENE-9093
> URL: https://issues.apache.org/jira/browse/LUCENE-9093
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/highlighter
> Reporter: Tim Retout
> Priority: Major
> Attachments: LUCENE-9093.patch
>
>
> When using the unified highlighter with hl.bs.type=WORD, I am not able to get
> context to the left of the matches returned; only words to the right of each
> match are shown. I see this behaviour on both Solr 6.4 and Solr 7.1.
> Without context to the left of a match, the highlighted snippets are much
> less useful for understanding where the match appears in a document.
> As an example, using the techproducts data with Solr 7.1, given a search for
> "apple", highlighting the "features" field:
> http://localhost:8983/solr/techproducts/select?hl.fl=features&hl=on&q=apple&hl.bs.type=WORD&hl.fragsize=30&hl.method=unified
> I see this snippet:
> "<em>Apple</em> Lossless, H.264 video"
> Note that "Apple" is anchored to the left. Compare with the original
> highlighter:
> http://localhost:8983/solr/techproducts/select?hl.fl=features&hl=on&q=apple&hl.fragsize=30
> And the match has context either side:
> ", Audible, <em>Apple</em> Lossless, H.264 video"
> (To complicate this, in general I am not sure that the unified highlighter is
> respecting the hl.fragsize parameter, although [SOLR-9935] suggests support
> was added. I included the hl.fragsize param in the unified URL too, but it's
> making no difference unless set to 0.)
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