# [NTG-context] reference containing parentheses causes trouble

Hans Hagen j.hagen at xs4all.nl
Wed Jul 10 13:39:19 CEST 2019

```On 7/10/2019 1:04 PM, Peter Rolf wrote:
> Hi Sanjoy,
>
> I think it's just the 'normal' limitations you have when setting a
> variable/id name. Special characters, like parenthesis, are not allowed
> here.
>
> Even whitespace can be problematic. Yesterday I had a problem with a
> reference (data driven) that has a trailing space (obviously a typo).
> This space was 'eaten' by TeX, resulting in a broken link. Embracing the
> argument helped here, but I haven't tested what happens, if you use
> multiple spaces in a row...
indeed, references are actually a little language in their own (always
have been)

\enabletrackers[structures.referencing.analyzing]

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