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  1. Core Server
  2. SERVER-78800

Umlauts are not converted to lower or upper case letters

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    • Icon: Bug Bug
    • Resolution: Works as Designed
    • Icon: Major - P3 Major - P3
    • None
    • 6.0.5
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    • ALL
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      1. Create a new document in which a field contains umlauts.
        Example: `{"a": "äÄöÖüÜ"}`
      2. Create a new aggregation pipeline
      3. Add a project stage that contains the operation `$toLower` and/or `$toUpper`.
        Example: `{$project: {"upper": {$toUpper: "$a"}, "lower": {$toLower: "$a"}}`
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      Create a new document in which a field contains umlauts. Example: `{"a": "äÄöÖüÜ"}` Create a new aggregation pipeline Add a project stage that contains the operation `$toLower` and/or `$toUpper`. Example: `{$project: {"upper": {$toUpper: "$a"}, "lower": {$toLower: "$a"}}`

    Description

      Umlauts (äÄ,öÖ,üÜ) are not converted to their lower or upper case with the aggregation pipeline operations `$toLower` or `$toUpper`.

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            yuan.fang@mongodb.com Yuan Fang
            felix.pries@icloud.com Felix Pries
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