# [NTG-context] Comma spacing in math mode

Mon Feb 28 00:14:36 CET 2011

```On Mon, 28 Feb 2011, Mojca Miklavec wrote:

> On Sun, Feb 27, 2011 at 23:49, Stefan Müller <warrence.stm at gmx.de> wrote:
>> Hi!
>>
>> On 27.02.2011 20:58, Aditya Mahajan wrote:
>>>
>>> On Sun, 27 Feb 2011, S Barmeier wrote:
>>>
>>>> I don't know if anyone feels the same, but I'm not happy with the
>>>> spacing of commas in math mode (pictures attached). For instance,
>>>> typesetting H^1(X,F), the comma seems to be closer to the F than to the
>>>> X. Equal spacing on both sides or setting the comma closer to the X are
>>>> I guess a matter of taste (inserting a \neghairspace after the X
>>>> achieves the latter). In any case, I would kind of prefer equal spacing.
>>>
>>> \setupmathematics[autopunctuation=no]
>>>
>>> @Hans: I would suggest that this should be made the default.
>>
>> IMO this does only partially help, consider the following example:
>>
>> \starttext
>> \$(B, Y, R, X)\$
>> \setupmathematics[autopunctuation=no]
>> \$(B, Y, R, X)\$
>> \stoptext
>>
>> In both lines the spacing after "Y" is way to big. I don't know if that's a
>> bug or just ugly. (version 2011.02.15 16:11)
>
> In text parts this is known as kerning. In OpenType math there are
> complex bounding boxes.

I would call it a bug. The spacing is OK with cambria, but not with xits.