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Fix word boundary matching in matches(of:) #744

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Merged
merged 1 commit into from
Jun 9, 2024

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A prior change incorrectly treated the start of the searchBounds as an always-valid word boundary, which resulted in a word boundary at the start of a pattern unconditionally matching at the restart point when finding all matches in a string.

This change corrects the usage to recognize word boundaries only at the start of the subjectBounds.

rdar://129417643

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prog8 Paweł Róg
A prior change incorrectly treated the start of the `searchBounds` as
an always-valid word boundary, which resulted in a word boundary at
the start of a pattern unconditionally matching at the restart point
when finding all matches in a string.

This change corrects the usage to recognize word boundaries only at
the start of the `subjectBounds`.

rdar://129417643
@natecook1000 natecook1000 requested a review from milseman June 9, 2024 08:44
@natecook1000
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@swift-ci Please test

@natecook1000
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@swift-ci Please test Linux platform

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@milseman milseman left a comment

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LGTM

@natecook1000 natecook1000 merged commit 68e377a into main Jun 9, 2024
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@natecook1000 natecook1000 deleted the word-boundary-subject-bounds branch June 9, 2024 19:08
natecook1000 added a commit that referenced this pull request Jun 9, 2024

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This commit was signed with the committer’s verified signature.
prog8 Paweł Róg
A prior change incorrectly treated the start of the `searchBounds` as
an always-valid word boundary, which resulted in a word boundary at
the start of a pattern unconditionally matching at the restart point
when finding all matches in a string.

This change corrects the usage to recognize word boundaries only at
the start of the `subjectBounds`.

rdar://129417643
natecook1000 added a commit that referenced this pull request Jun 9, 2024
A prior change incorrectly treated the start of the `searchBounds` as
an always-valid word boundary, which resulted in a word boundary at
the start of a pattern unconditionally matching at the restart point
when finding all matches in a string.

This change corrects the usage to recognize word boundaries only at
the start of the `subjectBounds`.

rdar://129417643
natecook1000 added a commit that referenced this pull request Jul 11, 2024
A prior change incorrectly treated the start of the `searchBounds` as
an always-valid word boundary, which resulted in a word boundary at
the start of a pattern unconditionally matching at the restart point
when finding all matches in a string.

This change corrects the usage to recognize word boundaries only at
the start of the `subjectBounds`.

rdar://129417643
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2 participants