Issue with makeglossaries not surpporting negative thinspace

Question

I have a glossary entry using a negative thinspace ("\!"), but it seems that makeglossaries is generating wrong code. I filed a bug report, but maybe there is a work-around?

Here is a minimal working example :

\documentclass[12pt,a4paper,twoside]{memoir}

\usepackage{lipsum}

\usepackage[acronym,toc]{glossaries}

\newglossaryentry{foo}{text=foo,name=Foo,description={This is foo}}
\newglossaryentry{footoo}{text={foo-too},name={Foo-\!Too},description={This is foo-too}}

\makeglossaries

\begin{document}

\lipsum[1]
\gls{foo}
\lipsum[1]
\gls{footoo}
\lipsum[1]

\printglossaries{}

\end{document}

In the glossary, at the end of the "Foo" line, there is a residual "Foo- ̈".I find Foo-\"\relax \glsresetentrylist in the .gls file, which, once removed, cleans the output of pdflatex, but the root cause is likely in the glo file which replaces the "\!" with "\"!".

Answer 1

The character ! has a special meaning in indexing programmes (which makeglossaries uses behind the scenes). I don't think any of them look to see if the ! is "escaped". Instead I'd suggest giving \! a different name and then use that.

This seems to work

\documentclass[12pt,a4paper,twoside]{memoir}

\usepackage{lipsum}

\usepackage[acronym,toc]{glossaries}
\let\ts\!


\newglossaryentry{foo}{text=foo,name=Foo,description={This is foo}}
\newglossaryentry{footoo}{text={foo-too},name={Foo-\ts Too},description={This is foo-too}}

\makeglossaries


\begin{document}

\lipsum[1]
\gls{foo}
\lipsum[1]
\gls{footoo}
\lipsum[1]

\printglossaries{}

\end{document}

Answer 2

daleif's answer is correct. However, if you only need this once in your document and prefer not to create a new macro for that purpose, you can also just insert manual kerning:

\newglossaryentry{footoo}{text={foo-too},name={Foo-\kern-.1667emToo},description={This is foo-too}}