619524 - harfbuzz does not yet support all scripts

Status: RESOLVED FIXED

(Core :: Layout: Text and Fonts, defect)

Description

[Jonathan Kew [:jfkthame]]

This is basically a tracker for extending harfbuzz to provide shapers for all relevant scripts (in particular, the Indic family). This is needed so that we can get completely away from using platform shaping libraries (for security, stability, and consistency), and to support these scripts on platforms where native shapers aren't available (e.g. Fennec).

The actual work will happen upstream in harfbuzz-ng, and this bug should get fixed as we integrate updated versions.

Comment 1

[Jonathan Kew [:jfkthame]]

Now that bug 964240 (Hangul) has landed, following earlier bugs that provided Indic and SEAsian script support, I think we can close this. HarfBuzz now has adequate support for all the scripts for which OpenType shaping behavior is defined, and in consequence, we no longer need to dispatch text to harfbuzz or native platform shapers depending on the script.