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#800 Devanagari ligatures rendered incorrectly on OS X

None
open
nobody
None
5
2016-02-22
2016-02-22
Aaron Madlon-Kay
No

Reported on omegat-development

Devanagari ligatures are not rendered correctly on OS X, though they are correct on Windows. Examples:

String Space-separated Expected display
राक्षस र ा क ् ष स
गायत्री ग ा य त ् र ी
उबुन्टु उ ब ु न ् ट ु
सफ्टवेयर स फ ् ट व े र
केन्द्र क े न ् द ् र

Actual rendering:

Attempted fixes that did not work:

  1. Setting System.setProperty("apple.awt.graphics.UseQuartz", "true"); per StackOverflow answer
  2. Using Font.createFont() to load the system font (/Library/Fonts/DevanagariMT.ttc, etc.) per JDK-7162125
  3. Using Java 9 early access (build 106): in fact this is worse, as there is a crash when rendering a document containing Devanagari text

This is not an OmegaT-specific problem, as jEdit and other Swing programs also show the same issue.

There doesn't seem to be much we can do about this besides wait for a fix in Java itself.

5 Attachments
Screenshot 2016-02-20 12.17.48.png
Screenshot 2016-02-20 12.19.21.png
Screenshot 2016-02-20 12.20.34.png
Screenshot 2016-02-20 12.21.44.png
Screenshot 2016-02-20 12.23.57.png

Discussion

  • Aaron Madlon-Kay

    Aaron Madlon-Kay - 2016-02-22
    • Description has changed:

    Diff:

    --- old
+++ new
@@ -2,13 +2,13 @@

 Devanagari ligatures are not rendered correctly on OS X, though they are correct on Windows. Examples:

-String | Space-separated | Header
+String | Space-separated | Expected display
 ---------- | ---------- | ------ 
-राक्षस | र ा क ् ष स |  
-गायत्री | ग ा य त ् र ी |  
-उबुन्टु | उ ब ु न ् ट ु | 
-सफ्टवेयर | स फ ् ट व े र |
-केन्द्र | क े न ् द ् र |
+राक्षस | र ा क ् ष स | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.17.48.png)
+गायत्री | ग ा य त ् र ी | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.19.21.png)
+उबुन्टु | उ ब ु न ् ट ु | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.20.34.png)
+सफ्टवेयर | स फ ् ट व े र | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.21.44.png)
+केन्द्र | क े न ् द ् र | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.23.57.png)

 Attempted fixes that did not work:
     

  • Aaron Madlon-Kay

    Aaron Madlon-Kay - 2016-02-22

    Attatching patch for solution #2 (discarded because it didn't work)

     
    osx-load-native-font.diff

  • Aaron Madlon-Kay

    Aaron Madlon-Kay - 2016-02-22

    Attaching screenshot of actual rendering

     
    Thumbnail
    Screen Shot 2016-02-22 at 11.06.59.png

  • Aaron Madlon-Kay

    Aaron Madlon-Kay - 2016-02-22
    • Description has changed:

    Diff:

    --- old
+++ new
@@ -10,8 +10,15 @@
 सफ्टवेयर | स फ ् ट व े र | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.21.44.png)
 केन्द्र | क े न ् द ् र | ![](https://sourceforge.net/p/omegat/bugs/800/attachment/Screenshot%202016-02-20%2012.23.57.png)

+Actual rendering:
+![](https://sourceforge.net/p/omegat/bugs/_discuss/thread/dc55678e/bb48/attachment/Screen%20Shot%202016-02-22%20at%2011.06.59.png)
+
 Attempted fixes that did not work:

 1. Setting `System.setProperty("apple.awt.graphics.UseQuartz", "true");` per [StackOverflow answer](http://stackoverflow.com/a/6407206/448068)
 2. Using `Font.createFont()` to load the system font (`/Library/Fonts/DevanagariMT.ttc`, etc.) per [JDK-7162125](https://bugs.openjdk.java.net/browse/JDK-7162125)
 3. Using Java 9 early access (build 106): in fact this is worse, as there is a crash when rendering a document containing Devanagari text
+
+This is not an OmegaT-specific problem, as jEdit and other Swing programs also show the same issue.
+
+There doesn't seem to be much we can do about this besides wait for a fix in Java itself.
     

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