Removing LaTeX column borders for automatic colspec

[jessetan]

I can specify .. tabularcolumns:: JJ before a two-column table to make both columns justified and autosizing, without a vertical line between the columns.

It would be nice if there was a way to do this for all tables, so that I do not need to write tabularcolumns manually every time.
I've looked into the templates used to generate the LaTeX code for tables and I don't think I can provide my own template to do this.
The template contains \begin{tabulary}{\linewidth}[t]<%= table.get_colspec() -%> and table.get_colspec() already adds the pipe | characters which define the vertical lines.

[tk0miya]

+0; I understand some people prefers tables not having vertical line.

[jfbu]

If you use {*{10}{J}} in the template in place of <%= table.get_colspec() -%> you should get working solution. Because if there are less than 10 columns, then the extra specifiers are ignored. I am assuming here never more than 10 columns. Replace 10 by large enough numbers. Or simply use {JJJJJJJJJJ} or with more J's.

This issue is also possibly related to PR #6666 which is about using booktabs package which implements the possibly majoritarian view among LaTeX influencers about not using vertical lines.

[dllu]

Until this is merged, a workaround is to hide vertical lines by making them white or changing the width of the lines. You can do this using a .sty file with this method: https://tex.stackexchange.com/questions/543679/globally-styling-vertical-and-horizontal-rules-in-both-tabular-and-longtable/543689