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Text Zero Width Space Break Marker Tool

Calculate text zero width space break marker from explicit caller-supplied inputs.

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Description

Return zero-based UTF-16 indexes of U+200B zero-width spaces and their count.

Text positions can be measured in UTF-16 code units, Unicode code points, grapheme clusters, or modeled display columns. These coordinates are not interchangeable. Invisible markers and delimiter policies can also affect interpretation even when a string looks unchanged, so the chosen representation needs to stay explicit.

Return zero-based UTF-16 indexes of U+200B zero-width spaces and their count.

When to use this tool

Use Text Zero Width Space Break Marker when you need the stated marker, coordinate, delimiter, or normalization operation under an explicit text representation.

How to use the tool and how it works

  1. Enter text. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read indexes, count. Use the output convention below.

Return zero-based UTF-16 indexes of U+200B zero-width spaces and their count.1

Input fieldMeaning and unitsAccepted input
textTextRequired. Text; maximum UTF-16 length 8192.
Output fieldInterpretationReturned shape
indexesIndexesRequired. Array of safe integer; maximum items 256.
countCount under the stated input or output convention.Required. Safe integer.
json
{
  "input": {
    "text": "ab​cd​"
  },
  "output": {
    "indexes": [
      2,
      5
    ],
    "count": 2
  }
}

Limitations and assumptions

  • Positions concern one marker only. The tool does not insert or remove breaks, find every invisible character, or calculate actual line wrapping or display width.
  • The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.

Alternative or Complementary methods

Choose the coordinate system required by the consumer. Use a full parser, renderer, or segmentation method when a local marker or delimiter rule cannot determine the complete text behavior.

References

  1. Calculation and input contract: text/text-zero-width-space-break-marker — tool.io

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