Comma as a decimal separator

[J-Duelund]

Hi!

Is it possible to have a comma as a decimal separator, meaning that there isn't added extra space after the comma? When using LaTeX I would use the icomma package.

I know that I can write 3{,}14159... etc., but when writing a lot of decimal numbers, it would be easier to make an overall change if possible.

[edemaine]

You could use \def,{{\char`,}} or the setting {macros: {",": "{\\char`,}"}} to permanently redefine , to {,}. But this makes it hard to form lists.

icomma.sty's behavior is to add spacing when the comma is followed by a space. I believe this is implemented by the following setting:

{macros: {",": (context) => context.future()?.text === " " ? "{\\char`,}" : "\\char`,"}

I don't think this can currently be expressed via \def, but hopefully this suffices for your purposes.

[J-Duelund]

Thanks for the answer. I think that it will work.