microsoft / microsoft/DWriteShapePy
Analysis is incorrect - RTL text is backwards
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- Dominant language
- C++
- Stars
- 18
- Forks
- 6
- Avg merge
- 1d 28m
- Merged PRs (30d)
- 3
Description
DWriteShapePy doesn't seem to analyse RTL texts correctly:
PS C:\Users\simon\Desktop> python3 -m dwriteshapepy --language ar .\NNUTest.ttf -u 06cc,0679,06d2
[alefMaksura-ar.fina.alt=0+504.0|tahabove-ar=1@348.0,-389.0+0.0|behDotless-ar.init.yeh=4@0.0,375.0+204.0|nobari=0+0.0|yehbarree-ar.isol=0+1409.0]
The text should be the other way around. (06cc FARSI YEH should be in initial position, 0x6d2 YEH BARREE should be in final position)
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Research direction
Start by reproducing the reported command with the Arabic glyph sequence and compare the shaped output with the expected initial and final positions. Trace the RTL analysis and shaping entry point used by DWriteShapePy; done means the sequence is returned in the correct order with 06cc in initial position and 06d2 in final position.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, python
- Domain
- internationalization, tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100