Rendering problems with Khmer text containing U+17D2 and U+17C2

Bug #1916493 reported by Eberhard Beilharz on 2021-02-22
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gnome-terminal (Ubuntu)

Bug Description

gnome-terminal has some problems displaying Khmer text:

The Khmer Sign Coeng (U+17D2) functions to indicate that the following Khmer letter is to be rendered subscripted.

The Khmer Vowel Sign Ae (U+17C2) needs to be rendered in front of the preceding character.

However, that doesn't work in gnome-terminal.

See attached screenshots how things are supposed to look like (as rendered in gedit) and how they look in gnome-terminal:

ខ្មែរ (U+1781 U+17d2 U+1798 U+17c2 U+179a)

word fragments:
ខ្ម (U+1781 U+17d2 U+1798)
ខែ (U+1781 U+17c2)

System information:

$ lsb_release -rd
Description: Ubuntu 18.04.5 LTS
Release: 18.04
$ apt-cache policy gnome-terminal
  Installed: 3.28.2-1ubuntu1~18.04.1
  Candidate: 3.28.2-1ubuntu1~18.04.1
  Version table:
 *** 3.28.2-1ubuntu1~18.04.1 500
        500 bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.28.1-1ubuntu1 500
        500 bionic/main amd64 Packages

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