# Tweaking the appearance of a \label

I have a label that references what is currently section 1.4. Can I tweak either the \ref or \label so that it appears as 4 (i.e. only the subsection number) when reffed?

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Assuming you're sure that your reference have the form m.n, then the following code

\usepackage{refcount}
\newcommand\subsecref[1]{%
\edef\temp{\getrefnumber{#1}}%
\ifnum0=\temp ??\else
\expandafter\eatsection\temp\eatsection
\fi}
\def\eatsection#1.#2\eatsection{#2}


will do: call \subsecref{label}.

It's more complicated if the form of the references is different (say if they are chapter.section.subsection, but not conceptually more difficult.

A less efficient implementation that works also in expansion context is

\usepackage{refcount}
\newcommand\subsecref[1]{%
\ifnum0=\romannumeral-0\getrefnumber{#1}??%
\else
\expandafter\eatsection\romannumeral-0\getrefnumber{#1}\eatsection
\fi}
\def\eatsection#1.#2\eatsection{#2}

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