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code_completion.md: link Element Patterns

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Yann Cébron 2021-03-10 18:22:49 +01:00
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topics/reference_guide/custom_language_support/code_completion.md
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@ -32,7 +32,7 @@ Implementing the [`CompletionContributor`](upsource:///platform/analysis-api/src
>
{type="note"}
The core scenario of using [`CompletionContributor`](upsource:///platform/analysis-api/src/com/intellij/codeInsight/completion/CompletionContributor.java) consists of calling the `extend()` method and passing in the *pattern* specifying the context in which this completion variant is applicable, as well as a *completion provider* which generates the items to show in the completion list.
The core scenario of using [`CompletionContributor`](upsource:///platform/analysis-api/src/com/intellij/codeInsight/completion/CompletionContributor.java) consists of calling the `extend()` method and passing in the [Element Pattern](element_patterns.md) specifying the context in which this completion variant is applicable, as well as a *completion provider* which generates the items to show in the completion list.
Keep in mind that the pattern is checked against the leaf PSI element.
If you want to match a composite element, use `withParent()` or `withSuperParent()` methods.