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Bug Tracker

ID:89 🔗
Status:Closed (Not a Bug)
Category:glossaries
Version:4.15
Submitted by:Malte Vesper
Date:2015-06-24 11:16:02
Summary:breaking space between long acronym and acronym

Report

Glossaries default style (current texlive version) allows for a line break between `Acronym (acr)` i.e.

Acronym
(acr)

This line break can fall onto a page break.

Fix: i guess replacing `\space` with `~` should work. If there are reasons against this please let me know.

MWE

    \documentclass{article}
    \usepackage{glossaries}
    \setlength{\textwidth}{1cm}

    \newacronymstyle{long-short-nolbr}%
    {%
      \ifglshaslong{\glslabel}{\glsgenacfmt}{\glsgenentryfmt}%
    }%
    {%
      \renewcommand*{\GenericAcronymFields}{description={\the\glslongtok}}%
      \renewcommand*{\genacrfullformat}[2]{%
       \glsentrylong{##1}##2~
       (\protect\firstacronymfont{\glsentryshort{##1}})%
      }%
      \renewcommand*{\Genacrfullformat}[2]{%
       \Glsentrylong{##1}##2~
       (\protect\firstacronymfont{\glsentryshort{##1}})%
      }%
      \renewcommand*{\genplacrfullformat}[2]{%
       \glsentrylongpl{##1}##2~
       (\protect\firstacronymfont{\glsentryshortpl{##1}})%
      }%
      \renewcommand*{\Genplacrfullformat}[2]{%
       \Glsentrylongpl{##1}##2~
       (\protect\firstacronymfont{\glsentryshortpl{##1}})%
      }%
      \renewcommand*{\acronymentry}[1]{\acronymfont{\glsentryshort{##1}}}
      \renewcommand*{\acronymsort}[2]{##1}%
      \renewcommand*{\acronymfont}[1]{##1}%
      \renewcommand*{\firstacronymfont}[1]{\acronymfont{##1}}%
      \renewcommand*{\acrpluralsuffix}{\glspluralsuffix}%
    }

    \makeglossaries
    \setacronymstyle{long-short-nolbr}
        \setacronymstyle{long-short}
    \newacronym{nfa}{NFA}{nondeterministic finite automata}
    \begin{document}
    \gls{nfa}
    
    \end{document}

Evaluation

This is a feature request, so I've had to close it as not a bug. (There are plenty of long abbreviations, especially technical or medical ones, where a non-breakable space is undesirable. The existing styles behave as documented so there's no bug to fix.) However, version 4.16 now has two new styles called "long-sp-short" and "long-sp-short-desc". These will use a non-breakable space if "(short)" is less than 3em otherwise it will use a regular space. For these styles, the space is inserted using \glsacspace{label} which can be redefined as required.

Comments

Comment from Malte Vesper
Date: 2015-07-09 05:22:42 CDT

While probably not quite the place, I would like you to know that I did not just move on, after reporting this, so: Thank you very much.

Just as an idea for the future: would it make sense to have the 3em be user defineable? (Package parameter: downside only configurable for one glossary, style parameter or maybe create a comand wrapper to generate this style).

Comment from Nicola Talbot
Date: 2015-07-08 11:27 BST

I did consider making the length configurable by providing a new length register, but glossaries already uses up so many resources (which has resulted in complaints) that I didn't want to add any more. It's difficult to get a good balance between providing customization and document build efficiency.

Comment from Nicola Talbot
Date: 2020-03-01 20:38 GMT

The glossaries-extra package has made it easier to provide new features. Some of the abbreviation styles with the extension package use

\glsxtrfullsep{label}
between the long and short forms which can be configured as required.

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