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What am I doing wrong? According to my understanding, these two formulae should look different (the second one should have a thin space):



$(2,5)$ versus $(2, 5)$


(I am using ConTeXt MkIV.)

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In math mode, TeX is set to ignore any discretionary spaces it finds in the input. – Mico Apr 19 '12 at 8:17
@Mico LuaTeX is involved here, so there is/should be a callback to alter the behaviour I think (if you check the code, the option sets an \attribute). – Joseph Wright Apr 19 '12 at 9:32
@JosephWright -- thanks for setting me straight on this issue. – Mico Apr 19 '12 at 12:16
Even in MkII, it is (or at least I think so) supposed to take this space into consideration. – mbork Apr 19 '12 at 12:16
@mbrok: Looks like a bug in the current implementation. Please report it to the ConTeXt mailing list. – Aditya Aug 5 '12 at 17:35
up vote 3 down vote accepted

What autopunctuation=yes did was make the comma behave the same as the period --- suppress the automatic thin space, for the benefit of those who use the comma as a decimal mark. Since last monday's beta, however, autopunctuation has the behaviour you expect: when it is set to 'yes', 2, 5 will get a thin space, and 2,5 will not. I have written a complete overview of autopunctuation settings over at the question Number kerning in ConTeXt math mode is different and worse than normal.

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