Hi Hans,
what’s your opinion to redefine the leaders command to take a optional name
which loads a predefined setup?
<code>
% use \doifsymbolelse for the symbol key?
\unprotect
\installcorenamespace{leaders}
\installcorenamespace{leadersalternative}
\installdefinehandler \??leaders {leaders} \??leaders
\installparameterhandler \??leaders {leaders}
\installsetuphandler \??leaders {leaders}
\def\leaders
{\doifnextoptionalelse\leaders_indeed\normalleaders}
\def\leaders_indeed[#1]%
{\def\currentleaders{#1}%
\expandcheckedcsname\??leadersalternative{\leadersparameter\c!alternative}\s!default}
\setvalue{\??leadersalternative\s!default}%
{\leadersparameter\c!left
\normalleaders\hbox to
\leadersparameter\c!width{\hss\leadersparameter\c!symbol\hss}\hfill
\leadersparameter\c!right}
\setvalue{\??leadersalternative\s!default}%
{\leadersparameter\c!left
\normalleaders\hbox to
\leadersparameter\c!width{\hss\leadersparameter\c!symbol\hss}\hfill
\leadersparameter\c!right}
\setvalue{\??leadersalternative\v!global}%
{\leadersparameter\c!left
\normalgleaders\hbox to
\leadersparameter\c!width{\hss\leadersparameter\c!symbol\hss}\hfill
\leadersparameter\c!right}
\setupleaders
[\c!width=1em,
\c!symbol=.,
\c!alternative=\s!default]
\protect
\defineleaders[test]%[symbol=x]
\starttext
text\leaders\hbox to 1em{\hss .\hss}\hfill text
text\leaders[test]text
\stoptext
</code>
This method would be cleaner for user defined list layouts where one want to
change the filler between the text and the page number because a setup like
this isn’t something for a normal user.
<code source="strc-lst.mkvi">
\definelistalternative
[c]
[\c!distance=5em,
\c!width=0pt,
\c!stretch=10em,
\c!filler=\hskip.5em\gleaders\hbox to .5em{\hss.\hss}\hfill\hskip.5em\relax,
\c!renderingsetup=\??listrenderings:abc]
</code>
Wolfgang
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