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Weird warnings in a tex-file.

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निरंजन

I am compiling a TeX file which can be found [here](https://gitlab.com/niruvt/tipauni/-/blob/master/tipauni/tipauni-example.tex). (You need to install the package `tipauni` from that repository itself for a successful compile. It's unreleased currently.) I have pasted my log [here](https://pastebin.com/rpt2mSN8). I am getting a warning which makes a very little sense to me and I am curious why I am getting it.

My source file is of 344 lines. It uses Charis SIL as its main font set by package `fontspec`. In PDF properties too, there is no mention of Latin Modern Roman font. It shows Latin Modern Sans font and I know where I have used it in the input, so that's not a problem, but `TU/lmr/bx/n` is weird. Also the line number is said to be 503. About this I am absolutely clueless.

```
LaTeX Font Warning: Font shape `TU/lmr/bx/sc' undefined
(Font)              using `TU/lmr/bx/n' instead on input line 503.
```

Can somebody guess why this happens?

Top Answer

samcarter

The warning does not have any connection to your package, you can reproduce it by just loading the `leipzig` package:

```
% !TeX TS-program = xelatex
\documentclass{article}
\usepackage{leipzig}
\begin{document}
This document
\end{document}  
```

In section `7 FAQ` of the package documentation it is explained that not every font provides all shapes and you'll also find an example how to avoid the warning by loading a font which provides the necessary shapes:

```
% !TeX TS-program = xelatex
\documentclass{article}

\usepackage{fontspec}
\setmainfont[
  Mapping=tex-text,% 
  SmallCapsFont={TeX Gyre Termes},% 
  SmallCapsFeatures={Letters=SmallCaps}
]{Times New Roman}

\usepackage{leipzig}
\begin{document}
This document
\end{document}  
```

As I've never used the `leipzig` (and didn't even hear of it until you aksed this question), I'd like to stick to just the information from the doc, but please feel free to post an answer of your own!

@samcarter, maybe it is worth it to add a tiny detail to [your answer](#a1991), i.e., the `leipzig` package should be loaded _after_ font-selection. It seems obvious, but I had to struggle a bit finding out why exactly do I get the warning despite of loading a font with bold sc. Of course, I had missed an obvious pipelining rule, but there are chances that many people like me make the same mistake. Also, you may use `NewCM10-Regular.otf`. It has the required shapes, plus it doesn't change the default design of LaTeX font.

That same FAQ contains the sub-optimal statement to use `\usepackage[T1]{fontenc}` in XeLaTeX (and then goes on to show the syntax of `\setmainfont` from `fontspec`, so my best guess is that this is a typo out of habit).

For the future: The log contains information about the files being opened and when they are closed! The general structure of this information is `(<path-to-file> <stuff>)` (a left parenthesis means file-open, a right parenthesis means file-close; `<stuff>` can be arbitrary log-level messages, nested files, etc.). In this case the next line in your log with contents (line 422 in your pastebin file) contains the closing parenthesis of the file `/usr/local/texlive/2020/texmf-dist/tex/latex/leipzig/leipzig.sty`, so you know that the warning was thrown for that file.

The issue is in line 503 of the file `leipzig.sty`, that line concludes the following statement: ``` \@ifpackageloaded{glossaries}{% \ifleipzig@nostandards\leipzigdonotindextrue\fi \loadglsentries{leipzig.tex}% \glsfindwidesttoplevelname[\leipzigtype]% \leipzigdonotindexfalse }% {\input{leipzig.tex}}% ``` The line which would be the issue here is most likely `\glsfindwidesttoplevelname[\leipzigtype]`, as that one contains a `\settowidth` statement which would load fonts inside a `\hbox`.

1 Answer