why neither \bf nor \textbf works in this?

1,465

You do

\usepackage[utf8]{vietnam}

so the default font encoding is T5. The Libertine font families defined by the libertineotf package don't provide T5 encoded fonts. Indeed you see in your log file

LaTeX Font Warning: Font shape `T5/LinuxLibertineT-TLF/m/n' undefined
(Font)              using `T5/cmr/m/n' instead on input line 147.

LaTeX Font Warning: Font shape `T5/LinuxLibertineT-TLF/b/n' undefined
(Font)              using `T5/LinuxLibertineT-TLF/m/n' instead on input line 152.

which explains the mystery. Since LaTeX doesn't know a T5 encoded font for Linux Libertine, it does a substitution. When boldface is requested, another substitution (b to m) is performed. But the m font shape corresponds to standard CM (in T5 encoding).

Remove

\usepackage{libertineotf}

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Thumbolt
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Thumbolt

Updated on March 21, 2020

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  • Thumbolt
    Thumbolt over 3 years

    I have used \bf, \bfseries and \textbf for some particular texts in my answer sheet yet I am unable to detect what makes these fail to work in this document. Could you help to find it?

     \documentclass[11pt, oneside, A4paper,final,leqno]{article}
    \usepackage{amsmath}
    \usepackage[utf8]{vietnam}
    \usepackage{amsmath, amssymb, latexsym, amscd, amsthm}
    \usepackage[usenames,dvipsnames]{color}
    \usepackage{phaistos}
    \newcommand\myrule{$\;$\rule{1.362cm}{.4pt}}
    \newcommand{\qrule}{\gray~\rule{2.9362cm}{.4pt}}
    \usepackage{enumerate}
    \newcommand{\middlewave}[1]{\raisebox{.2em}{\uwave{\hspace{#1}}}}
    
    \definecolor{usethiscolorhere}{rgb}{0.86666,0.78431,0.78431}
    \usepackage{framed}
    \usepackage{enumitem}
    
    
    \usepackage{graphics}
    \usepackage{tikz}
    \newcommand*\circled[1]{\tikz[baseline=(char.base)]{
                \node[shape=circle,draw,inner sep=2pt] (char) {#1};}}
    \unitlength=1mm
    \def\BOX{\framebox(18.55,4.5){}}
    \usepackage{multicol}
    \usepackage{indentfirst}
    \usepackage[modulo,left, displaymath]{lineno}
    \renewcommand\linenumberfont{\normalfont\bfseries\small }
    %\usepackage{eurofont}
    \usepackage{eurosans}
    \usepackage{enumerate}
    \usepackage{amsfonts}
    \usepackage{curves}
    \usepackage{mfpic}
    \usepackage{bbding}
    \usepackage{longtable}
    \usepackage{xcolor}
    
    \usepackage{graphicx}
    
    \usepackage[mathscr]{eucal}
    \usepackage{graphics, graphpap}
    
    \usepackage{makeidx}
    \makeindex
    \usepackage{multicol,color}
    \usepackage{indentfirst}
    
    \renewcommand{\thefootnote}{}
    \renewcommand{\proofname}{Solution}
    
    
    
    \newcommand{\tikzcuboid}[4]{% width, height, depth, scale
    \begin{tikzpicture}[scale=#4]
    \foreach \x in {0,...,#1}
    {   \draw (\x ,0  ,#3 ) -- (\x ,#2 ,#3 );
        \draw (\x ,#2 ,#3 ) -- (\x ,#2 ,0  );
    }
    \foreach \x in {0,...,#2}
    {   \draw (#1 ,\x ,#3 ) -- (#1 ,\x ,0  );
        \draw (0  ,\x ,#3 ) -- (#1 ,\x ,#3 );
    }
    \foreach \x in {0,...,#3}
    {   \draw (#1 ,0  ,\x ) -- (#1 ,#2 ,\x );
        \draw (0  ,#2 ,\x ) -- (#1 ,#2 ,\x );
    }
    \end{tikzpicture}
    }
    
    \newcommand{\tikzcube}[2]{% length, scale
    \tikzcuboid{#1}{#1}{#1}{#2}
    }
    
    \usepackage{pgf,tikz}
    \usepackage[left=1.75cm,top=1.19012473cm,right=1.919cm,bottom=1.85391469cm,bindingoffset=0.05cm]{geometry}
    \usepackage{pst-coil}
    
    \usepackage{libertineotf}
    \providecommand{\hexagon}{\biolinum\Large\scshape{H\hspace{-.061em}\raisebox{-.51ex}{E}\hspace{-.061em}XAGON}}
    
    \newcommand*\xcircled[1]{\tikz[baseline=(char.base)]{
      \node[shape=circle,draw,inner sep=1.12pt, color=red] (char) {#1};}}
    
    \newcommand*\ycircled[1]{\tikz[baseline=(char.base)]{
      \node[shape=circle,draw,inner sep=1.12pt, color=purple] (char) {#1};}}
    
    \newcommand*\tcircled[1]{\tikz[baseline=(char.base)]{
      \node[shape=circle,draw,inner sep=.4812pt, color=gray] (char) {#1};}}
    
    \newcommand*\mcircled[1]{\tikz[baseline=(char.base)]{
      \node[shape=circle,draw,inner sep=1.93812pt, color=blue] (char) {#1};}}
    
    \newcommand*\ncircled[1]{\tikz[baseline=(char.base)]{
      \node[shape=circle,draw,inner sep=1.93812pt, color=blue] (char) {#1};}}
    
    \newcommand*\kcircled[1]{\tikz[baseline=(char.base)]{
      \node[shape=circle,draw,inner sep=1.93812pt, color=blue] (char) {#1};}}
    
    
    
    \newcommand*\kkcircled[1]{\tikz{\draw (2,2) ellipse (.463cm and .231cm);;}}
    \newcommand*\kkci[1]{\tikz{\draw (2,2) ellipse (1.9617463cm and .4231cm);;}}
    
    
    \usepackage{MnSymbol}
    \usepackage{bbding}
    
    
    \textheight=16.325truecm
    \textwidth=13.4286325truecm
    \parskip=.162cm
    
    \usepackage[absolute,overlay]{textpos}
    
    
    %\usepackage[utf8]{vietnam}
    \usepackage[absolute,overlay]{textpos}
    \usepackage{graphicx}
    
    
    \usepackage[framemethod=TikZ]{mdframed}
    \definecolor{myviolet}{rgb}{0.73,0.56,0.64}
    
    \usepackage{lipsum}
    
    \newmdenv[%
        rightmargin=.6725964137168512402\textwidth,
        backgroundcolor=myviolet,
        linewidth=.4pt,
       innerleftmargin=2.3pt, innerrightmargin=.3pt,innertopmargin=2.3pt, innerbottommargin=2.3pt
           fontcolor=white%
    ]{mybox}
    
    \newmdenv[%
        rightmargin=.695964137168512402\textwidth,
        backgroundcolor=white,
        linewidth=.4pt,
       innerleftmargin=3.3pt, innerrightmargin=.3pt,innertopmargin=0.3pt, innerbottommargin=2.3pt
           fontcolor=white%
    ]{mybox2}
    
    \definecolor{babyblue}{rgb}{0.54, 0.81, 0.94}
    \definecolor{aquamarine}{rgb}{0.5, 1.0, 0.83}
    \definecolor{celadon}{rgb}{0.67, 0.88, 0.69}
    
    \definecolor{bole}{rgb}{0.47, 0.27, 0.23}
    
    \begin{document}
    
    
    \begin{center}
     \bfseries{Mathematical Young Talent Search}
    \end{center}
    \flushleft 
    \scalebox{1.542}{\bf \textcolor{purple}{MYTS Contestant Info}} 
    \vspace{2ex}
    
    %XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    \begin{minipage}[t]{11cm}
    \begin{tabular}{lp{6.5cm} p{6.5cm}}
    \scalebox{.983}{  \ncircled{1} }   Họ tên/Name &  \rule{7.43cm}{.24pt} 
     &    \\[6pt]
    \scalebox{.983}{  \ncircled{2} }   Ngày/tháng/năm sinh& \rule{7.43cm}{.24pt}\\ [6pt]
    \scalebox{.983}{  \ncircled{3} }   Trường học/School &  \rule{7.43cm}{.24pt} 
    \end{tabular}
    \end{minipage}
    \null\hfill %\PencilRightDown
    \begin{minipage}[t]{3.7295cm}
    \vspace{-11.2975em}
    
    
    \end{minipage}
    
    
    \vspace{1.2ex}
    \ScissorHollowRight\tikz \draw[dashed](-5,0)--(7,0);
    
    
    %\thispagestyle{empty}
    \flushleft 
    \scalebox{1.542}{\bf \textcolor {blue}{\textbf MYTS Answer Form}} 
    
    Thí sinh viết câu trả lời vào chỗ trống thích hợp dưới đây. 
    %Write your answers in the space provided below so that each answer corresponds to its question number. 
    \vspace{-5ex}
    
    \begin{center}
    \renewcommand{\arraystretch}{1.35752}
    \addtolength{\tabcolsep}{11.2962084pt}
    
    \begin{tabular}{@{}*{6}{r}@{}}
    \textbf{\textcolor{blue}{1}}\qrule&\textbf{\textcolor{bole}{11}}\qrule &\textbf{\textcolor{purple}{21}}\qrule& \\
    
    \textbf{\textcolor{blue}{2}}\qrule&\textbf{\textcolor{bole}{12}}\qrule &\textbf{\textcolor{purple}{22}}\qrule&\\
    \textbf{\textcolor{blue}{3}}\qrule&\textbf{\textcolor{bole}{13}}\qrule &\textbf{\textcolor{purple}{23}}\qrule&\\
    \textbf{\textcolor{blue}{4}}\qrule&\textbf{\textcolor{bole}{14}}\qrule &\textbf{\textcolor{purple}{24}}\qrule&\\
    \textbf{\textcolor{blue}{5}}\qrule&\textbf{\textcolor{bole}{15}}\qrule &\textbf{\textcolor{purple}{25}}\qrule&\\
    
    \textbf{\textcolor{blue}{6}}\qrule&\textbf{\textcolor{bole}{16}}\qrule &\textbf{\textcolor{purple}{26}}\qrule& \\
    \textbf{\textcolor{blue}{7}}\qrule&\textbf{\textcolor{bole}{17}}\qrule &\textbf{\textcolor{purple}{27}}\qrule&\\
    \textbf{\textcolor{blue}{8}}\qrule&\textbf{\textcolor{bole}{18}}\qrule &\textbf{\textcolor{purple}{28}}\qrule&\\
    \textbf{\textcolor{blue}{9}}\qrule&\textbf{\textcolor{bole}{19}}\qrule &\textbf{\textcolor{purple}{29}}\qrule&\\
    \textbf{\textcolor{blue}{10}}\qrule&\textbf{\textcolor{bole}{20}}\qrule &\textbf{\textcolor{purple}{30}}\qrule&\\
    
    
    \end{tabular}
    \end{center}
    
    \begin{textblock}{20.5}(6.282853965, 3.675428542541095)
    \begin{tikzpicture}[scale=.573]
    \draw[color=gray, thick] (6.,-1.)-- (6.,-2.);
    \draw[color=gray,  thick] (8.,-1.)-- (8.,-2.);
    \draw[color=gray,  thick] (10.,-1.)-- (10.,-2.);
    \draw[color=gray,  thick] (12.,-1.)-- (12.,-2.);
    \draw[color=gray,  thick] (14.,-1.)-- (14.,-2.);
    \end{tikzpicture}
    \end{textblock}
    
    
    \begin{textblock}{20.5}(6.282853965, 1.20435428542541095)
    \begin{tikzpicture}[scale=.573]
    \draw[color=gray, thick] (6.,-1.)-- (6.,-2.);
    \draw[color=gray,  thick] (8.,-1.)-- (8.,-2.);
    \draw[color=gray,  thick] (10.,-1.)-- (10.,-2.);
    \draw[color=gray,  thick] (12.,-1.)-- (12.,-2.);
    \draw[color=gray,  thick] (14.,-1.)-- (14.,-2.);
    \end{tikzpicture}
    \end{textblock}
    
    \end{document}
    
    • naphaneal
      naphaneal over 7 years
      please reformat your code.
    • egreg
      egreg over 7 years
      You have to paste the code, select it and click the {} icon or hit Control-K
    • alexkelbo
      alexkelbo over 7 years
      There's a reason why "minimal working example" has "minimal" in it. Which of the \bf and \textbf do you have a problem with?
    • Johannes_B
      Johannes_B over 7 years
      I get 31 results for \textbf and 3 for \bf and 2 for \bfseries. Taking into account the huge example and the missing markup, i vote to close as unclear. You have asked 30 questions so far, this should not be a problem for you. Please improve your question.
    • Johannes_B
      Johannes_B over 7 years
      Helpful links: Creating a minimal working example If you indent lines by 4 spaces, they'll be marked as a code sample. You can also highlight the code and click the "code" button (with "{}" on it).
    • PTNobel
      PTNobel over 7 years
      Why is this labeled tex-core? It's clearly LaTeX related.
    • Johannes_B
      Johannes_B over 7 years
      Fellow close voters, shortly (very shortly) after my comment and initial close vote the question was edited along with a compilable (though not minimal) example. And also answered, by the highest rep user of this community. Usually, a question like that would stay open. I now have faith that robo-reviewing is a real thing. I voted to reopen the question. Though it could need some improvements.
    • Ian Thompson
      Ian Thompson over 7 years
      Not related to the problem, but you don't need to load graphics (just graphicx), there is no point loading both color and xcolor, and there is no need to load packages more than once. In any case, do you actually need all those pacakges?