[tex-eplain] [solved] Re: Undefined label

Rodolfo Medina rodolfo.medina at gmail.com
Wed Apr 29 12:21:05 CEST 2009

On Tue, Apr 28, 2009 at 06:49:26PM +0100, Rodolfo Medina wrote:

>> Inside a certain definition, I want to create a condition on the existence
>> of an undefined label:

Oleg Katsitadze <olegkat at gmail.com> writes:

> Taken from \@definelabel in xeplain.tex:
>     \expandafter\ifx\csname\xrlabel{#1}\endcsname \relax
>       % Label is undefined.
>     \else
>       % Label is defined.
>     \fi

Thanks, this seems to work.

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