https://bugs.documentfoundation.org/show_bug.cgi?id=152196

            Bug ID: 152196
           Summary: Visible gaps in Arabic/Persian text with fallback font
           Product: LibreOffice
           Version: 7.4.0.3 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: [email protected]
          Reporter: [email protected]

Created attachment 183747
  --> https://bugs.documentfoundation.org/attachment.cgi?id=183747&action=edit
Visible gaps in Arabic/Persian text

Description:
When copying text, or creating a new file, sometimes a fallback font is used
that does not contain characters for many languages. In this case, the
character dimensions are incorrectly calculated.

Steps to Reproduce:
1. Open attachment

Actual Results:
See the visible gaps in Arabic/Persian text. The selected font is "Lohit
Devanagari", and the fallback font is "FreeSerif". The problem disappears when
setting "FreeSerif" font for the text. The problem is not visible in the PDF
export.

Expected Results:
There should not be gaps between joined characters in Arabic/Persian text like
جمع.

Reproducible: Always


User Profile Reset: No


Additional Info:

Reproducible with the latest LO dev 7.5
Version: 7.5.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 651658d37bcb3f493942dd5d0b9a0d65c96f105c
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded

Reproducible with LO 7.4
Version: 7.4.0.3 / LibreOffice Community
Build ID: f85e47c08ddd19c015c0114a68350214f7066f5a
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: x11
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded

Not reproducible with LO 7.3
Version: 7.3.6.1 / LibreOffice Community
Build ID: 92b673af3a5e8f7cf4716be88dfaca424612f244
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: x11
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded

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