Missing character:There is no │ (U+2502) in font (xelatex)

Question

Packages I am loading:

\usepackage{unicode-math}
\usepackage{ucharclasses}
\usepackage{textcomp}
\usepackage{longtable}
\usepackage{booktabs}
\usepackage{tikz}
\usepackage{xpatch}
\usepackage{imakeidx}
\usepackage{xltxtra}
\setmainfont{TeX Gyre Schola}
\setmathfont{TeX Gyre Schola Math}
\setmathfont{TeX Gyre Termes Math}
\setmathfont{Latin Modern Math}
\setmathfont{TeX Gyre Bonum Math}
\setmathfont{TeX Gyre Pagella Math}
\usepackage{geometry}
\geometry{%
   twoside
  ,bindingoffset=1cm
  ,top=1.5cm
  ,bottom=0.5cm
  ,left=0.9cm
  ,right=0.6cm
  ,asymmetric
}
%% Leave me LAST!
\usepackage{hyperref}
\hypersetup{
    colorlinks,
    citecolor=black,
    filecolor=black,
    linkcolor=blue,
    urlcolor=black
}

My setting: I download some data from the web which contains html-formatted chunks (e.g. give me £12 and 1 ≤ x! etc.), then I pass this through pandoc to convert the same chunk in latex. I place those latex chunks inside my latex template and run xelatex on it. Just to be clear: the template is mine, pandoc only converts some chunks of html to latex, it does not produce the whole latex document.

The html's £ are converted by pandoc to unicode chars which xelatex can deal with (I would prefered to have them all as tex-math symbols as i am really annoyed with littering my source documents with unicode except "foreign" languages).

The problem with above setting is that unicode chars like ≤ (U+2264), and | (U+2502) are not found by xelatex. I have managed to load different fonts (as per Missing character: There is no ℕ in font cmss10! , my packages are shown at the beginning of this post) and now xelatex recognises most of these unicode chars except | (U+2502). I get:

Missing character: There is no │ (U+2502) in font TeX Gyre Schola/OT:script=lat
n;language=dflt;mapping=tex-text;!

Update: The above problem has been solved thanks to the comments I got. But I have now same problem with different character. Here is the script:

\documentclass[12pt,a4paper]{book}
%\usepackage{fontspec}
\usepackage{unicode-math}
\setmainfont{TeX Gyre Schola}
\setmathfont{TeX Gyre Schola Math}
\usepackage{newunicodechar}
%\newunicodechar{^^^^1D45A}{a} % this does not recognise hex
\begin{document}
this -1 should read $m-1$
\end{document}

m is not rendered with this error in log:

Missing character: There is no  (U+1D45A) in font TeX Gyre Schola/OT:script=la

But that font is there.

Update: this has now been solved (thanks @David Carlisle):

Is there a font which supports this char?

Update: this has now been solved, Yes use albatross!!!! (which is great, thanks @Ulrike Fischer):

Is there a place where I can enter the unicode char and find a tex font which supports it?

Answer 1

The TeX Gyre Math fonts you are using do have U+2502

\documentclass{article}
\usepackage{unicode-math}
% only if you need it \usepackage{ucharclasses}
% not with xetex \usepackage{textcomp}
% avoid, better to just use fontspc, already included by unicode-math \usepackage{xltxtra}
\setmainfont{TeX Gyre Schola}
\setmathfont{TeX Gyre Schola Math}
% this over-writes the prevous setting \setmathfont{TeX Gyre Termes Math}
% this over-writes the prevous setting \setmathfont{Latin Modern Math}
% this over-writes the prevous setting \setmathfont{TeX Gyre Bonum Math}
% this over-writes the prevous setting \setmathfont{TeX Gyre Pagella Math}
\begin{document}
abc $x\mid y$ $x ^^^^2502 y$  [^^^^2502] [|]
\end{document}

U+2502 is a box drawing character which really has no place in text and should probably just be replaced with | but the text used above produces

Missing character: There is no │ (U+2502) in font TeX Gyre Schola/OT:script=lat
n;language=dflt;mapping=tex-text;!

If you can not fix the source not to use it, you could remap it using character classes,or more simply with newunicodechar:

\documentclass{article}
\usepackage{unicode-math}
% only if you need it \usepackage{ucharclasses}
% not with xetex \usepackage{textcomp}
% avoid, better to just use fontspc, already included by unicode-math \usepackage{xltxtra}
\setmainfont{TeX Gyre Schola}
\setmathfont{TeX Gyre Schola Math}
% this over-writes the prevous setting \setmathfont{TeX Gyre Termes Math}
% this over-writes the prevous setting \setmathfont{Latin Modern Math}
% this over-writes the prevous setting \setmathfont{TeX Gyre Bonum Math}
% this over-writes the prevous setting \setmathfont{TeX Gyre Pagella Math}
\usepackage{newunicodechar}
\newunicodechar{^^^^2502}{|}
\begin{document}
abc $x\mid y$ $x ^^^^2502 y$  [^^^^2502] [|]
\end{document}