fontstypewriter
I'd like to change the teletype (\ttfamily) font that I'm using in my document. (I'm using the scrartcl class.) I've searched on stackexchange and Google, but all I can find are answers to how to change the base font to teletype.
How can I change just the teletype font for my document?
You can update the definition of \ttfamily to include the font changes that you need. For example, below \ttfamily has been updated to always use \LARGE (say). Here is the default definition of \ttfamily from latex.ltx:
\DeclareRobustCommand\ttfamily
{\not@math@alphabet\ttfamily\mathtt
\fontfamily\ttdefault\selectfont}
Here is an updated version in the form of a minimal example:
\documentclass[11pt]{article}
\makeatletter
% Definition of \ttfamily from latex.ltx
\DeclareRobustCommand\ttfamily
{\not@math@alphabet\ttfamily\mathtt
\fontfamily\ttdefault\LARGE\selectfont}
\makeatother
\begin{document}
Some normal text.
{\ttfamily Some typewriter text.\par}
Some normal and \texttt{typewriter} text.
\end{document}
The above example also shows why this should not be done.
The issue is not the hyphenation here, because TeX does not find a good place to hyphenate a word. The problem is rather that the interword space does not have flexibility. This can be added via font parameters. Alternatively \spaceskip and \xspaceskip can be set.
\documentclass[english,11pt,oneside,article]{memoir}
\usepackage[english]{babel}
\usepackage{geometry}
\setlength{\emergencystretch}{2em}
\usepackage{letltxmacro}
\LetLtxMacro\origttfamily\ttfamily
\DeclareRobustCommand*{\ttfamily}{%
\origttfamily
\hyphenchar\font=`\-\relax
\fontdimen3\font=.25em\relax
\fontdimen4\font=.167em\relax
\fontdimen7\font=.167em\relax
}
\makeatletter
\DeclareRobustCommand\vttfamily{%
\not@math@alphabet\vttfamily\relax
\fontfamily{cmvtt}% cmvtt (Computer Modern) or lmvtt (Latin Modern)
\selectfont
}
\DeclareTextFontCommand{\textvtt}{\vttfamily}
\makeatother
\geometry{left=20mm,right=20mm, top=20mm, bottom=50mm}
\OnehalfSpacing
\leftskip3em\rightskip2em
\begin{document}
$>$She didn’t want to spend the time trying to locate them, or try to thin
out the operator’s patience for Alison doing whatever. She expects they are
already rather sour at her burrowing a tunnel through most of the building’s
floors to make that railgun using an enormous amount of jetalium. If she gets
a chance later, though, to come back to this place, she’ll put rescuing
Loviro on the table.
\\{}\ttfamily According to the engineer, they are most likely tethers to
launch things cheaply into space, given how high they go. Although, Alison
does come by close enough to see one to see a revolving restaurant at the
top of it, so tossing stuff into space may not be its only function.
\\{}\vttfamily According to the engineer, they are most likely tethers to
launch things cheaply into space, given how high they go. Although, Alison
does come by close enough to see one to see a revolving restaurant at the
top of it, so tossing stuff into space may not be its only function.
\end{document}
Remarks:
For comparison: the third part is set by a variable width typewriter font.
As explained in How to automatically hyphenate within \texttt?, the setting of font dimens is global. But this might not be an issue here, because \ttfamily is redefined anyway.
Package letltxmacro is used, because saving macros that are defined via \DeclareRobustCommand are trickier.
Best Answer
LaTeX remembers the default font family for
\ttfamilyin macro\ttdefault. The default for\ttdefaultin LaTeX (and KOMA-Script) without any other font packages iscmttand addresses the teletype font of the Computer Modern fonts. Other examples:lmvtt: variable width teletype font of Latin Modern fontsqcr: TeX Gyre Cursor (similar to Courier)Manually the font family for
\ttfamilycan be redefined, e.g.:Often there are font packages that take care of this and some other things. For example, TeX Gyre Cursor can be enabled by package
tgcursor:Users of XeTeX and LuaTeX that support Unicode and OpenType fonts can use package
fontspecand its possibilities to define and setup teletype fonts (e.g.\setmonofont).