# Increase word space between words in small caps

With tracking activated for small caps, it can be a little bit hard to detect interword spaces. Cf. below.

\documentclass{article}
\usepackage{fontspec}
\setmainfont{Libertine Serif}[
SmallCapsFeatures = {Letters = SmallCaps, LetterSpace = 5}]
\begin{document}
The title of my article is \textsc{This is the moment your life changed forever}.
\end{document}


I'd like to increase the space between words in small caps, therefore, but only when words on either side are in small caps (i.e. there should be no extra space before the first word written in small caps or after the last word).

I would've thought I could do this by adding WordSpace = <> to SmallCapsFeatures, but this will change the interword space everywhere.

\documentclass{article}
\usepackage{fontspec}
\setmainfont{Libertine Serif}[
SmallCapsFeatures = {Letters = SmallCaps, LetterSpace = 5, WordSpace = 5}]
\begin{document}
The title of my article is \textsc{This is the moment your life changed forever}.
\end{document}


• I understand you want to be on the bleeding edge, but TeX distributions only feature the old versions of Libertine. Testing your code always requires changing the font name. – egreg Sep 1 '15 at 18:29
• @egreg I see your point, but in order to use \setmainfont{Linux Libertine O} too, you'd have to install the font on your system, right? (It being included in texlive doesn't mean it's a system font). So it doesn't require that much more to install Khaled Hosny's libertine fork than to install a font found in TeX? – Sverre Sep 1 '15 at 18:34
• No, "Linux Libertine O" is distributed automatically with TeXLive and (full installations of) MikTeX. No need to go through any additional installation steps with "Linux Libertine O". – Mico Sep 1 '15 at 18:38
• @Sverre Your code must be changed anyway, that's the problem. – egreg Sep 1 '15 at 18:39
• @Mico I thought \setmainfont looked for system fonts. It also searches through the fonts in your TeX distribution? That's news to me, then, and would surely make @egreg's point even more pertinent. – Sverre Sep 1 '15 at 18:46

You want to set \spaceskip to a non null value (and perhaps also \xspaceskip).

\documentclass{article}
\usepackage{fontspec}
\usepackage{xpatch}

\setmainfont{Linux Libertine O}[
SmallCapsFeatures = {
Letters = SmallCaps,
LetterSpace = 20,
}
]

\xapptocmd{\scshape}
{\spaceskip=3\fontdimen2\font plus 3\fontdimen3\font minus \fontdimen4\font
\xspaceskip=2\fontdimen7\font}
{}{}

\begin{document}

The title of my article is \textsc{This is the moment your life changed forever}.
Here the space is normal.

\end{document}


The values are of course exaggerated: here the interword space is set to three times the normal value.

When \spaceskip has a nonzero value, it is used for the interword space instead of the default font defined one. The relevant font parameters are

1. \fontdimen2\font (the natural width of the interword space)
2. \fontdimen3\font (the stretch component)
3. \fontdimen4\font (the shrink component)

Thus, specifying

\spaceskip=3\fontdimen2\font plus 3\fontdimen3\font minus \fontdimen4\font


we're telling to use three times the normal interword space, stretchable three times as much it is normally and shrinking it the same as the default. The parameter \xspaceskip is related to the space factor: when the space factor is >2000, TeX adds its value to the normal interword space (this is how the space is increased after periods); by default TeX uses \fontdimen7\font, but it uses \xspaceskip if it is nonzero.

• Could you elaborate on your code here? I have no idea what numbers do what here, so I wouldn't know what to tweak in order to modify the interword space. – Sverre Sep 2 '15 at 9:04
• @Sverre I added a description – egreg Sep 2 '15 at 10:32
• I have to admit that I didn't understand the bit about \xspaceskip. It also doesn't affect the spacing in this MWE. – Sverre Sep 2 '15 at 10:50
• @Sverre No, the space factor never enters into action because there's no punctuation. On the other hand, since Norwegian probably sets \frenchspacing, the space factor is completely irrelevant anyway. – egreg Sep 2 '15 at 10:57
• I discovered a problem when using this in my document. It adds more vertical space between paragraphs instead of just using \baselineskip. – Sverre Sep 2 '15 at 11:00

Here, \theskip defines the new inter-word space inside \textsc{}. EDITED to fix bug which chopped last word. I also show that it works in headers in this MWE.

\documentclass{article}
\let\svtextsc\textsc
\def\theskip{\hspace{4ex}}
\def\textsc#1{\def\myskip{}\wspaceout#1 \relax\relax}
\def\wspaceout#1 #2\relax{%
\myskip\svtextsc{#1}\let\myskip\theskip\ifx\relax#2\else\wspaceout#2\relax\fi}
\usepackage{fancyhdr}
\pagestyle{fancy}
\begin{document}
The title of my article is \textsc{This is the moment your life changed forever}.
And some more text

\def\theskip{\hspace{1.5ex}}
The title of my article is \textsc{This is the moment your life changed forever}.
And some more text

\def\theskip{\ }
The title of my article is \textsc{This is the moment your life changed forever}.
And some more text

\def\theskip{\hspace{2ex}}
The title of my article is \textsc{This is the moment your life changed forever}.
And some more text
\end{document}


• When I try this code, the third (and final) word in my header (which is like textsc{Word1 Word2 Word3}) disappears ... – Sverre Sep 1 '15 at 18:00
• @Sverre Using fancyhdr package, I can confirm the problem. Now let me think why... – Steven B. Segletes Sep 1 '15 at 18:32
• @Sverre Actually, foolish me did not realize the problem exists even in normal text. Let me fix it. – Steven B. Segletes Sep 1 '15 at 18:35
• @Sverre Fixed now. – Steven B. Segletes Sep 1 '15 at 18:40
• \rm -> \rmfamily? Or do you want the non-2e meaning? But then this might not work and \normalfont\rmfamily would be better? Possibly? – cfr Jul 2 '16 at 16:35

Imho fontspec could do better here and allow WordSpace to be set for small caps alone. The following is not meant as usable document code -- it redefines an internal command of fontspec and probably miss some cleaning up -- but only as proof of concept:

\documentclass{article}
\usepackage{fontspec}

\ExplSyntaxOn\makeatletter
\cs_set:Nn \__fontspec_declare_shapes_smcaps:nn
{
\tl_if_empty:NF \l__fontspec_nfss_sc_tl
{
\__fontspec_DeclareFontShape:xxxxxx {\l__fontspec_nfss_enc_tl} {\l_fontspec_family_tl} {#1}
{ \__fontspec_combo_sc_shape:n {#2} } {\l__fontspec_nfss_sc_tl} {\l__fontspec_postadjust_tl
}
}
}

{
\fontdimen 2 \font = 5 \fontdimen 2 \font
\fontdimen 3 \font = 5 \fontdimen 3 \font
\fontdimen 4 \font = 5 \fontdimen 4 \font
}

\ExplSyntaxOff

\setmainfont{Linux Libertine O}[
SmallCapsFeatures = {Letters = SmallCaps, LetterSpace = 5,}
]

\ExplSyntaxOn
%should not affect Arial:
\ExplSyntaxOff
\setsansfont{Arial}
\begin{document}
The title of my article is

\textsc{This is the moment your life changed forever}.

{\large \scshape Large: the title of my article}

\textsc{\bfseries the title of my article}

the title of my article

\sffamily some words in sans

\scshape some words in small caps sans

\end{document}


Your problem should be solved by using \caps command form soul package. An example:

\documentclass{article}
\usepackage{soul}
\begin{document}
\scshape{abcde fghijk lmnopqr stuvwxyz abcdefghij klmnopqr stuvwxyz}

\caps{abcde fghijk lmnopqr stuvwxyz abcdefghij klmnopqr stuvwxyz}
\end{document}


You can change the font, spacing and even the command in use with command \capsdef.

Usage:

\capsdef{<font>}{<command>}{<inter-letter space>}{<inner space>}{<outer space>}


It seems that you want to increase <inner-space>. It can be done as follows:

\capsdef{T1/ppl/m/n/5-15}{\scshape}{.16em}{.6em}{.2em}


This also sets the command to \scshape so you won't need to use \caps.

• An example of usage? – egreg Sep 1 '15 at 21:40
• @egreg Example added :) – Aydin Sep 4 '15 at 9:18
• I am not sure if it does exactly what OP asked for, but the sole purpose of this command is to increase spacing properly in small caps words and it solves problem with hyphenation. So, it could be usefull for the OP. – Aydin Sep 4 '15 at 9:24