What is the font name for Source Sans Pro

Question

When using multiple sans-serif fonts in one document, it is necessary to know the internal name of a font to use it, as described here: How do I use a particular font for a small section of text in my document?

Unfortunately, I was not able to determine the internal name for the Source Sans Pro font (package: sourcesanspro). So my question is: what is the internal name for this font?

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To be more precise:

1. I use pdflatex.

2. I would like to do something like:

   \fontfamily{xyz}\selectfont
   

   where I need to know, what "xyz" would be.

Answer 1

The font family can be derived without analyzing the source code. LaTeX stores the current family name in macro \f@family. Thus, generate a short test document that uses the font as you need it. Check the package options of sourcesanspro. Then the value of \f@family is output:

\documentclass{article}
\usepackage[lining]{sourcesanspro}
\usepackage{color}
\begin{document}
\makeatletter
\textsf{Family of Source Sans Pro: \textcolor{red}{\f@family}}
\end{document}

Answer 2

you need the family name, looking at

https://www.ctan.org/tex-archive/fonts/sourcesanspro/tex

you will see the names are all of the form

SourceSansPro-TLF

where the part after the - depends on the options you specified for the styles of numbers to use, etc.

A line like

\DeclareFontShape{T1}{SourceSansPro-TLF}{b}{it}{

in one of those files is declaring T1 encoded font in family SourceSansPro-TLF bold italic variant.

Answer 3

Looking at the .fd files, you have 4 font families:

• SourceSansPro-LF: with proportional lining figures,
• SourceSansPro-OsF: with proportional old-style figures,
• SourceSansPro-TLF: with tabular lining figures,
• SourceSansPro-OsF: with tabular old-style figures,

and two smaller font families:

• SourceSansPro-Numr: with numerator figures,
• SourceSansPro-Sup: with superior figures (for exponents; recommended for footnote numbers, for instance).

All thses families are much simpler to use with fontspec, since you only have one Open Type family, and you call for a specific \fontfeature.