# How to set the second and subsequent appearances of an acronym using acro package

I'm using the acro package for my acronyms. My supervisor didn't like the use of ancronyms in the text, so I have to put all of them in the long form, but keeping the first style like "acronym (AC)" and the rest of uses "acronym". How can I configure the acro package for to print the long form in the second and subsequent uses?

\documentclass{article}
\usepackage{acro}
\DeclareAcronym{TIAE}{
short=TIAE,
long=this is an example,
}
\begin{document}
Firt use \ac{TIAE},
then second use \ac{TIAE},  %<--- must be "this is an example"
third use \ac{TIAE} and     %<--- must be "this is an example"
last use \ac{TIAE}.\par     %<--- must be "this is an example"
%
\printacronyms
\end{document}

• What is the point in giving the (AC) on first use if you never use it anywhere else in the text? – Dai Bowen Nov 10 '17 at 15:59
• @DaiBowen It will be used in tables and figures and schemas – Daniel Valencia C. Nov 10 '17 at 16:23
• @DaiBowen also some terms are more commonly known in some fields by their acronyms (PL vs photoluminescence) for example, but one author/supervisor may not be used to that or may just have a thing against all acronyms – Chris H Nov 10 '17 at 16:30

You could create a macro which contains \acifused to test if the acronym was already used and use \acl if true and \ac if false:

\documentclass{article}
\usepackage{acro}
\DeclareAcronym{TIAE}{
short=TIAE,
long=this is an example,
}
\newcommand{\myac}[1]{\acifused{#1}{\acl{#1}}{\ac{#1}}}
\begin{document}
Firt use \myac{TIAE},
then second use \myac{TIAE},  %<--- must be "this is an example"
third use \myac{TIAE} and     %<--- must be "this is an example"
last use \myac{TIAE}.\par     %<--- must be "this is an example"
%
\printacronyms
\end{document}