No separation in Nemeth braille output between content of neighboring lines in multiline aligned equations

[brichwin]

The Nemeth braille rendered by MathCAT from the MathML for these two aligned equations: results in braille that has no separation between the '5' at the end of the first line and the '3.1x' at the start of the second line:

⠼⠦⠨⠲⠲⠭⠬⠢⠢⠽⠀⠨⠅⠀⠼⠢⠒⠨⠂⠭⠤⠴⠨⠶⠀⠨⠅⠀⠤⠼⠂⠨⠂

The braille is roughly equivalent to "8.44 x plus 55 y equals 53.1 x minus 0.7 equals negative 1.1"

Note the 53.1 x in the braille output instead of a separation between the two equations.

Expected output

At a minimum, a space between the two equations is needed:

⠼⠦⠨⠲⠲⠭⠬⠢⠢⠽⠀⠨⠅⠀⠼⠢ ⠼⠒⠨⠂⠭⠤⠴⠨⠶⠀⠨⠅⠀⠤⠼⠂⠨⠂

Such multiline content is problematic. Unfortunately, it does not appear that Nemeth code has a mechanism for rendering a new line indicator. It would be worth researching if adding "Line 1: " ... "Line 2:", (or similar indication) would be appreciated.

To reproduce

The LaTeX was:

  \begin{aligned}
    8.44x + 55y &= 5\\
    3.1x - 0.7 &= -1.1
  \end{aligned}

[NSoiffer]

Can you ask someone who is proficient in Nemeth reading what they would like? The fix for #41 adds a space, but as you say, there is no indication that this is supposed to be two lines.

[brichwin]

I will poll some students. I wonder if it would be a good question for the Math Writing Solutions for VI meeting this Friday (6/22).

[brichwin]

There is an eight dot carriage return symbol, dots 13478. Here is a listing of eight dot ASCII symbols where this was found. http://daisy.github.io/pipeline/modules/braille/liblouis-utils/src/main/resources/default-tables/text_nabcc.dis/

We'll make up some examples using the symbol and see what people think.

[NSoiffer]

I'll add a preference setting for this that people can experiment with. I start with dots 13478.

I'll also fix the current bug that puts out ⠈⠠ and move the large parens, etc., to the outside.

[NSoiffer]

The output is now ⠼⠦⠨⠲⠲⠭⠬⠢⠢⠽⠀⠨⠅⠀⠼⠢⣍ ⠒⠨⠂⠭⠤⠴⠨⠶⠀⠨⠅⠀⠤⠼⠂⠨⠂.

There is no spacing around ⣍. @brichwin :Should there be spacing?

[brichwin]

Mary's first thoughts are that spacing after the "new line" character might imply that there is a space at the start of the new line. However, she thinks it might be more readable if there is a space before the character. Mary is checking with the people that recommended the new line character to see how they are used to finding it in the wilds.

[brichwin]

There is no spacing around ⣍. @brichwin :Should there be spacing?

Mary polled the individuals that suggested ⣍, the consensus was that a space before the character and no spaces after.

[NSoiffer]

Done.

[NSoiffer]

Nemeth has some rules (rule II.9, pages 9-13) about adding a numeric indicator in various situations in front of numbers. This includes after a left grouping symbol used in matrices and determinants.

@brichwin: should that rule apply after the new row indicator we came up with (⣍)?

[NSoiffer]

@brichwin (or Mary): any idea about the previous comment?

I want to fix if needed and close this.