Nvda: Dot 7 Being Added to Capital Letters in "Unified English Braille Code Grade 2" table

Created on 2 May 2020 · 16Comments · Source: nvaccess/nvda

Steps to reproduce:

Make sure Output Table is set to "Unified English Braille Code grade 2".
Make sure "Expand To Computer Braille for the Word at the Cursor" is checked.
In Notepad, type Hello, world!
Be sure that the cursor is at the end of the line, so that you can see the capital sign in "Hello".

Actual behavior:

There is a dot 6 before the 'h' and a dot 7 under the letter (i.e., ",Hello" instead of ",hello".

Expected behavior:

There should only be a dot 6 preceding the 'h' in "Hello".

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

2020.1RC1

Windows version:

Windows 10 1909 build 18363.778

Name and version of other software in use when reproducing the issue:

Notepad (webpages, ETC. will work as well).

Other information about your system:

All 16 comments

I had a moment, this is a dot 7 and not a dot 8. And, as per a suggestion from a friend, I confirmed this is not a cursor marker.

garrettk18 on 2 May 2020

Hi, I wonder if this is specific to UEB grade 2, or if it is reproducible in grade 1? If yes, I think we may need to dig into what’s going with braille cursor code. If not, chances are that this might be something going on with liblouis. CC @LeonardDer

josephsl on 2 May 2020

Possibly related: I think there's a fundamental issue somewhere with what "computer braille" means in UEB Grade 2.

Type the word x86
Move the cursor to the x
You'll notice "xhf" on the display, not "x86" or "x#hf".

This one goes away when using English U.S. Grade 2 (AKA EBAE). The original issue does not.

garrettk18 on 2 May 2020

Hi, I wonder if this is specific to UEB grade 2, or if it is reproducible in grade 1? If yes, I think we may need to dig into what’s going with braille cursor code. If not, chances are that this might be something going on with liblouis. CC @leonardder

@josephsl This occurs in UEB Grade 1 as well.

garrettk18 on 2 May 2020

I have the feeling that the "Expand To Computer Braille for the Word at the Cursor" option is severely broken. It is most likely that this is a liblouis issue.

cc @Andre9642

leonardder on 2 May 2020

Considering a p1 regression, assuming that I understand @leonardder correctly, this was likely introduced by "Update liblouis to 3.13.0 #10832"

feerrenrut on 2 May 2020

See also: Issue liblouis/liblouis#869

DrSooom on 3 May 2020

I don’t recommend to downgrade liblouis.

Report this issue to the liblouis project.

zstanecic on 3 May 2020

I'm also not very fond on the idea to downgrade liblouis just for this.

leonardder on 4 May 2020

I don't think this has been introduced by LibLouis 3.13. According to the OP's initial commend this has been the case in 2019.2 and 2019.3 as well.

lukaszgo1 on 6 May 2020

cc: @Andre9642

Adriani90 on 10 May 2020

With liblouis 3.13, I have the same behavior with the following tables (and probably others):

English (U.S.) grade 1
English (U.S.) grade 2
Unified English Braille Code grade 1
Korean grade 1
Korean grade 1 (2006)
Korean grade 2
Korean grade 2 (2006)
Russian grade 1

A quick fix to remove dots 7 (not perfect):

Edit en-ueb-chardefs.uti
Search "include latinLetterDef8Dots.uti"
Replace the line with "include latinLetterDef6Dots.uti"
Save the file and restart NVDA

*. You can do the same with en-chardefs.cti.

With this change, the main issue is that you can no longer see capitalizations when the cursor is placed on a capitalized word.

According my tests, the problem seems to be introduced between liblouis 3.3.0 (NVDA 2018.1.1) and liblouis 3.5.0 (NVDA 2018.2).

However I compared en-ueb-g2.ctb and en-us-g2.ctb (including sub-tables) from these versions and There doesn't seem to be any important change.

diffs

C:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/en-ueb-g2.ctb|cat
diff --git a/2018.1.1/louis/tables/en-ueb-g2.ctb b/2018.2/louis/tables/en-ueb-g2.ctb
index aaf4c7c..e616ce2 100755
--- a/2018.1.1/louis/tables/en-ueb-g2.ctb
+++ b/2018.2/louis/tables/en-ueb-g2.ctb
@@ -1,5 +1,25 @@
 # liblouis: Unified English Braille Code (Grade 2)
 #
+# -----------
+#-name: Unified English braille, grade 2
+#-display-name: English (UEB) contracted braille
+#
+#+locale:en
+#+type:literary
+#+contraction:full
+#+grade:2
+#+system:ueb
+#
+# TODO: Please correct the metadata above. It is not meant to be
+# accurate nor complete. It hasn't been verified by the table
+# author yet. It is merely an attempt by the liblouis maintainers
+# to get some sensible initial values in place.
+#
+# TODO: Please add a reference to official documentation about
+# the implemented braille code. Preferably submit the documents
+# to https://github.com/liblouis/braille-specs.
+# -----------
+#
 #  Copyright (C) 2004-2008 ViewPlus Technologies, Inc. www.viewplus.com
 #  Copyright (C) 2004-2006 JJB Software, Inc. www.jjb-software.com
 #  Copyright (C) 2016 American Printing House for the Blind, Inc. www.aph.org
@@ -759,6 +779,7 @@ always father 5-124

 # had   10.7.3
 always had 456-125
+always phad 1234-125-1-145

 #TODO:  check word jehad =
 #TODO:  check word jihad =

C:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/en-ueb-g1.ctb|cat
diff --git a/2018.1.1/louis/tables/en-ueb-g1.ctb b/2018.2/louis/tables/en-ueb-g1.ctb
index aad3d5f..6811b4c 100755
--- a/2018.1.1/louis/tables/en-ueb-g1.ctb
+++ b/2018.2/louis/tables/en-ueb-g1.ctb
@@ -1,5 +1,25 @@
 # liblouis: Unified English Braille Code (Grade 1)
 #
+# -----------
+#-name: Unified English braille, grade 1
+#-display-name: English (UEB) uncontracted braille
+#
+#+locale:en
+#+type:literary
+#+contraction:no
+#+grade:1
+#+system:ueb
+#
+# TODO: Please correct the metadata above. It is not meant to be
+# accurate nor complete. It hasn't been verified by the table
+# author yet. It is merely an attempt by the liblouis maintainers
+# to get some sensible initial values in place.
+#
+# TODO: Please add a reference to official documentation about
+# the implemented braille code. Preferably submit the documents
+# to https://github.com/liblouis/braille-specs.
+# -----------
+#
 #  Copyright (C) 2004-2008 ViewPlus Technologies, Inc. www.viewplus.com
 #  Copyright (C) 2004-2006 JJB Software, Inc. www.jjb-software.com
 #  Copyright (C) 2016 American Printing House for the Blind, Inc. www.aph.org

C:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/en-ueb-chardefs.uti|cat

C:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/en-ueb-math.ctb|cat

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/en-us-g2.ctb

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/en-us-g1.ctb|cat
diff --git a/2018.1.1/louis/tables/en-us-g1.ctb b/2018.2/louis/tables/en-us-g1.ctb
index ea84d24..38b43d7 100755
--- a/2018.1.1/louis/tables/en-us-g1.ctb
+++ b/2018.2/louis/tables/en-us-g1.ctb
@@ -1,5 +1,25 @@
 # liblouis: English, U.S. grade 1 (EBAE) table
 #
+# -----------
+#-name: U.S. English grade 1 (EBAE)
+#-display-name: U.S. English (EBAE) uncontracted braille
+#
+#+locale:en-US
+#+type:literary
+#+contraction:no
+#+grade:1
+#+system:ebae
+#
+# TODO: Please correct the metadata above. It is not meant to be
+# accurate nor complete. It hasn't been verified by the table
+# author yet. It is merely an attempt by the liblouis maintainers
+# to get some sensible initial values in place.
+#
+# TODO: Please add a reference to official documentation about
+# the implemented braille code. Preferably submit the documents
+# to https://github.com/liblouis/braille-specs.
+# -----------
+#
 #  Based on the Linux screenreader BRLTTY, copyright (C) 1999-2006 by
 #  The BRLTTY Team
 #

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/chardefs.cti|cat

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/braille-patterns.cti|cat

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/litdigits6Dots.uti|cat
diff --git a/2018.1.1/louis/tables/litdigits6Dots.uti b/2018.2/louis/tables/litdigits6Dots.uti
index a944940..5c6a7cd 100755
--- a/2018.1.1/louis/tables/litdigits6Dots.uti
+++ b/2018.2/louis/tables/litdigits6Dots.uti
@@ -1,4 +1,4 @@
-# liblouis: sub table for litirary digits, 6 dots
+# liblouis: sub table for literary digits, 6 dots
 #
 #  Copyright (C) 2013-2014 Mesar Hameed <[email protected]>
 #

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/loweredDigits6Dots.uti|cat

c:\app\nvda>gdf {2018.1.1,2018.2}/louis/tables/latinLetterDef8Dots.uti|cat

c:\app\nvda>

So it's probably a bug in the liblouis core, and I also recommend to open an issue on Liblouis repository.

Andre9642 on 10 May 2020

Has anyone created a bug on Liblouis repository already? If yes, please link the issue here so that we can track it also in this issue. Thanks.

Adriani90 on 13 Jun 2020

@BueVest and @bertfrees do you know if an issue has already been raised for this?

feerrenrut on 30 Jun 2020

@feerrenrut Possibly related to https://github.com/liblouis/liblouis/issues/963.

bertfrees on 30 Jun 2020

👍1

Yes, looks like the same issue.

BueVest on 30 Jun 2020

👍1

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Nvda: Dot 7 Being Added to Capital Letters in "Unified English Braille Code Grade 2" table

Steps to reproduce:

Actual behavior:

Expected behavior:

System configuration

NVDA installed/portable/running from source:

NVDA version:

Windows version:

Name and version of other software in use when reproducing the issue:

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Have you tried any other versions of NVDA? If so, please report their behaviors.

If addons are disabled, is your problem still occuring?

Did you try to run the COM registry fixing tool in NVDA menu / tools?

All 16 comments

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