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AAClause / BrailleExtender

NVDA add-on that improves braille support
https://andreabc.net/projects/NVDA_addons/BrailleExtender/
GNU General Public License v2.0
16 stars 17 forks source link

The bug with undefined characters #99

Closed Futyn-Maker closed 3 years ago

Futyn-Maker commented 3 years ago

Hello!

It's probably the result of wrong interraction of the addon with Liblouis. When I read texts and meet a specific symbol which is not defined in the Braille table, my focus-40 Braille display is disconnected at all. The most strange thing is that this bug appears not with all undefined symbols and not with all Braille tables.

Example (NVDA 2020.3):

  1. Choose the Ukrainian grade 1 table or the Uzbek, which includes ru-litbrl.ctb;
  2. In any text editor put the symbol · (u+00B7) and try to read it with a Braille display. Th' 'ymbol isn't defined in the table;
  3. See the bug.

It's not the only symbol, just for example. When i switch off the addon, the bug disappears. Here's the NVDA-log in the moment of this bug.

INFO - braille.BrailleHandler.setDisplayByName (12:31:34.550) - braille._BgThread (9852): Loaded braille display driver noBraille, current display has 0 cells. INFO - braille.BrailleHandler.setDisplayByName (12:31:40.264) - braille._BgThread (9852): Loaded braille display driver noBraille, current display has 0 cells. INFO - braille.BrailleHandler.setDisplayByName (12:31:45.394) - braille._BgThread (9852): Loaded braille display driver noBraille, current display has 0 cells. INFO - brailleDisplayDrivers.freedomScientific.BrailleDisplayDriver.init (12:31:52.260) - braille._BgThread (9852): Found Focus 40 connected via serial (COM3) INFO - braille.BrailleHandler.setDisplayByName (12:31:52.274) - braille._BgThread (9852): Loaded braille display driver freedomScientific, current display has 40 cells. WARNING - external:globalPlugins.brailleExtender.undefinedchars.getExtendedSymbolsForString (12:31:52.302) - MainThread (15924): Unable to load extended symbols for: Windows, using english INFO - brailleDisplayDrivers.freedomScientific.BrailleDisplayDriver.init (12:31:55.120) - braille._BgThread (9852): Found Focus 40 connected via serial (COM3) INFO - braille.BrailleHandler.setDisplayByName (12:31:55.126) - braille._BgThread (9852): Loaded braille display driver freedomScientific, current display has 40 cells. ERROR - braille.executor (12:31:59.284) - braille._BgThread (9852): Error displaying cells. Disabling display Traceback (most recent call last): File "braille.pyc", line 2163, in executor File "brailleDisplayDrivers\freedomScientific.pyc", line 500, in display ValueError: bytes must be in range(0, 256) ERROR - braille.BrailleHandler.handleDisplayUnavailable (12:31:59.284) - braille._BgThread (9852): Braille display unavailable. Disabling Traceback (most recent call last): File "braille.pyc", line 2163, in executor File "brailleDisplayDrivers\freedomScientific.pyc", line 500, in display ValueError: bytes must be in range(0, 256)

Thanks

Andrey

AAClause commented 3 years ago

Hmm, curious bug. Could you disable the option "Show punctuation/symbol name for undefined characters if available" in Braille Extender settings? Does the bug still occur? Thanks for the report!

Futyn-Maker commented 3 years ago

Could you disable the option "Show punctuation/symbol name for undefined characters if available" in Braille Extender settings? Does the bug still occur?

I've done it now. The bug doesn't occur without this option. I also should say that I use Russian language of NVDA and this symbol is in symbols.dic.

AAClause commented 3 years ago

OK, I'm able to reproduce it as well. :) Just passed the NVDA interface to Russian and the output braille table to Uzbek. I'll fix it ASAP. Thanks again.

AAClause commented 3 years ago

It should be fixed now. Could you test with the latest dev version? Thanks.

Futyn-Maker commented 3 years ago

Yes, it seems to work correctly. Now I get a description of undefined symbols. Many thanks to Your fast work!

Andrey