[Tex/LaTex] Why does siunitx remove the space after \percent

siunitx

When using siunitx to write percentages, I run into a problem with missing spaces.
Why does that happen? And what would be the best practice for writing percentages in text?

\documentclass{article}

\usepackage{siunitx}

\begin{document}

Siunix will eat the space after \SI{100}\percent as you can see here.
Using 0 \% of siunitx the space is there.

\end{document}

Best Answer

If you use it a \SI{100}{\percent} as then things work just fine:

enter image description here

Using {} to delimit parameters is the preferred LaTeX method.

Code:

\documentclass{article}

\usepackage{siunitx}

\begin{document}

\verb|Siunitx| will eat the space after \SI{100}{\percent} as you can see here.
Using 0 \% of \verb|siunitx| the space is there.

\end{document}

Related Solutions

[Tex/LaTex] the \percent macro is not working in siunitx package

You should use it like \si{\percent} (or \SI{10}{\percent})

          \documentclass[]{beamer}
          \usetheme{CambridgeUS}
          \usepackage{siunitx}
          \setbeamercolor{title}{bg=red!65!black,fg=white}
          \begin{document}
          \title{Risk Management in Software Engineering}
          \author{S.Subham Soni}
          \institute[P.E.C]{Department of Computer Science and Engineering\\
             Pondicherry Engineering College}
          \date{January 6, 2014}
          \begin{frame}
          \begin{tabular}{|r|r|}
          \hline
          \textbf{Risk}&\textbf{Percentage} \\
          \hline
           Very Low&$<\SI{10}{\percent}$ \\
           \hline
           Low& 10\si{\percent}--25\si{\percent} \\
           \hline
         \end{tabular}
         \end{frame}
         \end{document}

There was a typo in end{document}. Further, if you intend to put a range like 10-25%, better use \SIrange[range-phrase = --]{10}{25}{\percent}. And don't use \textless in math mode, use < instead.

[Tex/LaTex] Remove leading 0 in siunitx

I agree with the comments about this not being a good idea. But having said that, here's an approach, using the expl3 syntax that siunitx is built upon:

\documentclass{article}
\usepackage{siunitx}
\ExplSyntaxOn

\NewDocumentCommand\trimleadingzero{m}{%%
  \fp_compare:nTF { 0 < \fp_abs:n { #1 } < 1 }
    { 
      \__trimleadingzero:n {#1}
    }
    { #1 }
}

\cs_new_protected:Npn \__trimleadingzero:n #1 {
  \seq_set_split:Nnn \l_ae_integer_decimal_parts_seq {.} {#1}
  \fp_compare:nF {#1>0}
    { - }
  .\seq_item:Nn \l_ae_integer_decimal_parts_seq {2}
}

\ExplSyntaxOff
\begin{document}

\SI[add-integer-zero=false,parse-numbers=false]{\trimleadingzero{0.03}}{}

\SI[add-integer-zero=false,parse-numbers=false]{\trimleadingzero{-0.03}}{}

\end{document}