[Tex/LaTex] What’s the right way to globally change the font size

fontsize

Inside of a group, a command like \tiny has effect only until the group ends. One would like to be able to say \global\tiny to have it last after the group ends, but that does not work.

The best that I was able to come up with (described here) is the following.

\newif\ifhelper
\makeatletter
\def\unithelper#1\@nnil{\global\helpertrue\helper}
\def\helper{\ifhelper\afterassignment\helper\global\fi}
\newcommand*\globalfontsize[1]{%
\begingroup
       #1%
       \def\@defaultunits{\helperfalse\afterassignment\unithelper\global}%
       \let\realvrule\vrule
       \def\vrule{\helperfalse\global\helpertrue\afterassignment\helper\realvrule}%
       \global\helpertrue
       \helper#1%
       \helperfalse
\endgroup}
\makeatother

Then you can say \globalfontsize\tiny or \globalfontsize\normalsize to achieve the desired effect. What is the right way to do that?

Edit: Several people have suggested some variant of \documentclass[10pt]{article}. That is not related to my question. I'm using "global" in analogy to the TeX primitive \global.

Best Answer

\newcommand{\doglobally}[1]{{\globaldefs=1#1}}

Now you can write \doglobally\tiny

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