Re: [NTG-context] czech food

15 Sep 2005

      Vit Zyka wrote:
...
It needs some new definitions to core-spa.tex (Hans ??):
  \unexpanded\def\textormathglue#1#2#3{%
    {\dimen0=#1\hspaceamount\empty{#3}%
     \skip0=0pt plus.5\dimen0 minus.3\dimen0
     \ifmmode\mskip#1#2%
     \else\kern#1\hspaceamount\empty{#3}\hskip\skip0\fi\relax}%
  }
  \def\thinglue    {\textormathglue+\thinmuskip 1}
  \def\medglue     {\textormathglue+\medmuskip  2}
  \def\thickglue   {\textormathglue+\thickmuskip3}
this boils down to:

\unexpanded\def\textormathglue#1#2#3%
  {\begingroup
   \scratchdimen=#1\hspaceamount\empty{#3}%
   \scratchskip=\zeropoint
      \!!plus.5\scratchdimen
      \!!minus.3\scratchdimen\relax
   \ifmmode
     \mskip#1#2%
   \else
     \kern\scratchdimen
     \hskip\scratchskip
   \fi
   \endgroup}

\def\thinglue {\textormathglue+\thinmuskip 1}
\def\medglue  {\textormathglue+\medmuskip  2}
\def\thickglue{\textormathglue+\thickmuskip3}

why the kern followed by the skip? why not just 

\unexpanded\def\textormathglue#1#2#3%
  {\ifmmode
     \mskip#1#2\relax
   \else  
     \begingroup
     \scratchdimen#1\hspaceamount\empty{#3}%
     \scratchskip
       \scratchdimen  
       \!!plus .5\scratchdimen
       \!!minus.3\scratchdimen
     \hskip\scratchskip
     \endgroup
   \fi}

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