\string\noindent outputs a quotation mark " instead of a backslash \

Asked Jun 26 '22 at 07:04

Active Jun 26 '22 at 09:17

Viewed 75 times

I used \string\noindent to output a command \noindent, but the result is "noindent. I also tried with \verb|\noindent| and \texttt{\noindent}, but the results are the same. I found a question may be related to my problem, but I don't know how to fix it. Any suggestion is appreciated!

minimal working example:

\documentclass{article}
\usepackage{libertine}
\begin{document}
\verb|\noindent|
\string\noindent
\texttt{\noindent}
\end{document}

Update: I found that this result is because I use libertine font: \usepackage{libertine}. I deleted it and everything is fine. But I am still confused about the principle behind it.

edited Jun 26 '22 at 09:17

Zarko

296,517

asked Jun 26 '22 at 07:04

Qiang

Welcome to SE. Always show a Minimal Working Example so that we can see which environment you're working in, and test your code to suggest modifications. – Miyase Jun 26 '22 at 07:10
@Miyase Updated. – Qiang Jun 26 '22 at 07:45
OT1? ------------ – user202729 Jun 26 '22 at 07:46
Related question punctuation - Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (¡) or question mark (¿)? - TeX - LaTeX Stack Exchange – user202729 Jun 26 '22 at 07:49
1

As @user202729 hints, \usepackage[T1]{fontenc} should fix your problem. \texttt{\noindent} presumably doesn't do what you want... – frougon Jun 26 '22 at 07:54
Insightful answer. Thank you! @frougon – Qiang Jun 26 '22 at 08:05
@user202729 Exactly. [T1] works! Thanks! – Qiang Jun 26 '22 at 08:06
Generally-speaking people don't get tripped up by this particular character, because it's hard to "accidentally" get a catcode-11 or 12 (← if you want to understand this statement read e.g. TeXbook) character of backslash. The "official" method to typeset a backslash is \textbackslash – user202729 Jun 26 '22 at 08:08
3

the standard latex syntax would be \verb|\noindent| which would have worked even in OT1 encoding – David Carlisle Jun 26 '22 at 10:26

\string\noindent outputs a quotation mark " instead of a backslash \

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