With empty \titlegraphic the template will not compile

Issue #29 new
Adam Liter
created an issue

The file tikzposter-template.tex does not compile if \titlegraphic is empty.

It throws the error:

LaTeX Error: There's no line here to end.

Changing:

\gdef\TP@maketitle{
    \centering
    \vbox{
    \@titlegraphic
        \\[\TP@titlegraphictotitledistance]
        \centering
        \color{titlefgcolor}
        {\bfseries \Huge \sc \@title \par}
        \vspace*{1em}
        {\huge \@author \par}
        \vspace*{1em}
        {\LARGE \@institute}
    }
}

to

\gdef\TP@maketitle{
    \centering
    \vbox{
     \ifx\@titlegraphic\@empty%
        %
     \else%
        \@titlegraphic\\[\TP@titlegraphictotitledistance]%
     \fi%
        \centering
        \color{titlefgcolor}
        {\bfseries \Huge \sc \@title \par}
        \vspace*{1em}
        {\huge \@author \par}
        \vspace*{1em}
        {\LARGE \@institute}
    }
}

fixes this.

Comments (2)

  1. Adam Liter reporter

    Actually, a better fix would be to use etoolbox's \ifdefempty in case of \titlegraphic{ } (see here):

    \gdef\TP@maketitle{
        \centering
        \vbox{
          \ifdefempty{\@titlegraphic}{}{%
            \@titlegraphic\\[\TP@titlegraphictotitledistance]}
            \centering
            \color{titlefgcolor}
            {\bfseries \Huge \sc \@title \par}
            \vspace*{1em}
            {\huge \@author \par}
            \vspace*{1em}
            {\LARGE \@institute}
        }
    }
    
  2. matthewjohnrussell

    Any progress on getting the fix into the main code? I just got hit by the bug and it took me a while to figure out it was a problem in the documentclass rather than in my own code (partly due to the lack of line numbers in the Latex error for some reason)! Thanks

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