# [NTG-context] compare locations of two pagereferences

Wed Mar 2 18:32:32 CET 2011

Am 02.03.2011 um 18:05 schrieb Daniel Schopper:

> Dear all,
> how can one compare the locations of two pagereferences for conditional processing? I tried it with this (mkiv, 2011.01.10):

There is nothing predefined in the core but it’s not so hard to write your own command:

\def\doifelsesamepagereference#1#2%
{\doifelse
{\doifreferencefoundelse{#1}{\currentreferencepage}{-}}
{\doifreferencefoundelse{#2}{\currentreferencepage}{+}}}

\starttext

A\pagereference[page:a]\par
B\pagereference[page:b]

\page[yes]

C\pagereference[page:c]

A+B: \doifelsesamepagereference{page:a}{page:b}{YES}{NO}

B+C: \doifelsesamepagereference{page:b}{page:c}{YES}{NO}

\stoptext

Wolfgang