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  1. Qt
  2. QTBUG-50152

[REG 5.2.1->5.4.0] Bad rendering of combining diacritics

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 5.4.0, 5.5.1
    • GUI: Text handling
    • None
    • Mac OS 10.8.5 and 10.11.2
      Not checked on other systems
    • macOS

    Description

      The combining breve (unicode 0306) is not anymore handled correctly. It should be placed ABOVE the character placed before it.
      It was correctly handled with Qt5.2.1 and not with 5.4.0
      I have found a previous report on the same type of regression, a few years ago between 4.7 and 4.8.
      I have not tried with any other combining character, but I assume that if it affects the "combining breve" (which is crucial for the project Collatinus we are working on : http://outils.biblissima.fr/collatinus/) it will affects all of them.
      Attached :

      • a very simple code that displays 2 words in a QTextEdit
      • the result with Qt 5.2 (correct)
      • the result with Qt 5.4 (incorrect)

      Attachments

        1. Apple_Chancery.png
          28 kB
          Philippe Verkerk
        2. Arial_Narrow.png
          26 kB
          Philippe Verkerk
        3. Arial_Qt52.png
          27 kB
          Philippe Verkerk
        4. Arial.png
          26 kB
          Philippe Verkerk
        5. combining.zip
          5 kB
          Philippe Verkerk
        6. Courier.png
          28 kB
          Philippe Verkerk
        7. Geneva.png
          27 kB
          Philippe Verkerk
        8. Helvetiva.png
          28 kB
          Philippe Verkerk
        9. Lucida_Grande.png
          26 kB
          Philippe Verkerk
        10. Noto_Sans.png
          26 kB
          Philippe Verkerk
        11. Palatino.png
          28 kB
          Philippe Verkerk
        12. Qt5.2.1.png
          18 kB
          Philippe Verkerk
        13. Qt5.4.0.png
          18 kB
          Philippe Verkerk
        14. Qt5.6.0.png
          19 kB
          Philippe Verkerk
        15. QtCreator.png
          201 kB
          Philippe Verkerk
        16. Screenshot_20171121_193546.png
          224 kB
          Stephen Lyons
        17. Times_New_Roman.png
          27 kB
          Philippe Verkerk
        18. Times_Qt52.png
          28 kB
          Philippe Verkerk
        19. Times.png
          28 kB
          Philippe Verkerk
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        Activity

          People

            esabraha Eskil Abrahamsen Blomfeldt
            Philippe_Verkerk Philippe Verkerk
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            Watchers:
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            Dates

              Created:
              Updated:

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