[Tex/LaTex] Issues with nesting \textbf and \textit

best practicesbolditalic

I am trying to format a text so that it is bold and italic at the same time. I am doing this by nesting the \textbf and \textit commands, what should be no problem according to "Correct" way to bold/italicize text?. However, in the resulting pdf the text appears just bold.

\documentclass[10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{a4wide}
\usepackage{graphicx}
\usepackage{setspace}
\usepackage[font=small]{caption}
\usepackage{multicol}
\usepackage{etoolbox}
\usepackage{url}
\usepackage{enumitem}

\patchcmd{\chapter}{\if@openright\cleardoublepage\else\clearpage\fi}{}{}{}
\patchcmd{\quote}{\rightmargin}{\leftmargin 1em \rightmargin}{}{}

\renewcommand{\thesection}{\Roman{section}}
\renewcommand{\familydefault}{\sfdefault}
\renewcommand{\baselinestretch}{1.0}

\begin{document}
\begin{multicols}{2}

\textbf{
\textit{Keywords}\textemdash Service oriented Architecture, Service, Component, Functional Safety
}

\end{multicols}{2}
\end{document}

enter image description here

I don't whether this is of relevance, but this code is inside a multicolumn environment.

Best Answer

LaTeX warns to the terminal and log file

LaTeX Font Warning: Font shape `OT1/cmss/bx/it' undefined
(Font)              using `OT1/cmss/bx/n' instead on input line 24.

which says that the computer modern fonts don't have sans serif bold italic, so it is going to use sans serif bold normal shape instead.

Adding (for example)

\usepackage{lmodern}

selects a similar but different font set that does have this shape.

enter image description here

Related Solutions

[Tex/LaTex] \emph or \textit

Those are very different commands even if the output happens to look the same.

If you want to emphasize a word or some text, use \emph. Don't just make the text italic or bold. If needed, you may change the behaviour of \emph whenever you wish in the preamble and the whole document will be adjusted accordingly.
If you want to get italic text, use \textit. \emph might have a different effect, a package like ulem might change it to underlining for instance.
\emph may be nested: emphasized text within emphasized text may be upright. In contrary, nesting \textit just keeps the italic shape.
Further, I rarely use physical font commands in my body text. I use them to define styles in the preamble and use the styles in the document afterwards, ensuring consistency and allowing changes to be easily made.

[Tex/LaTex] difference between \textit and \itshape

\itshape is a switch:

Not italic {\itshape Italic} Not italic

\textit takes an argument:

Not italic \textit{Italic} Not italic

Many people seem to like \itshape{...}, which is wrong (but doesn't give an error since the braces are interpreted as grouping delimiters here). \itshape doesn't automatically insert italic correction, whereas \textit does, so inside a paragraph, \textit is usually better. On the other hand, sometimes the switch commands are more handy if you already have grouping (e.g., with braces or environments):

\begin{table}
  \itshape
  Everything inside this table is italic
\end{table}

Best Answer

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[Tex/LaTex] \emph or \textit

[Tex/LaTex] difference between \textit and \itshape

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