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Sweep 30 Oct 2026 · 21:36Z Build v2.1.315 533 read Stable v2.1.308 Latest v2.1.314 Next v2.1.315 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.315 ·

Changed check for long runs of Unicode combining marks

Claude Code changed a pattern that spots runs of 32 or more stacked Unicode combining marks, including halfwidth katakana voicing marks

Under the hood Internal Changes
JSON All of v2.1.315
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.315,
Internal ChangesSection of the release

Unclear It is not clear which text this pattern is applied to.

What

Combining marks are characters that stack on top of the letter before them, such as accents. Claude Code changed a pattern that matches 32 or more of them in a row. The pattern now also covers the voicing marks used with halfwidth Japanese katakana.

Why

The likely purpose is to guard against "zalgo" text, where piles of stacked marks make text spill over and break the display.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear which text this pattern is applied to.

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