* \getcommacommandsize not working in lmtx
@ 2022-05-02 7:37 Denis Maier via ntg-context
2022-05-02 9:53 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 2+ messages in thread
From: Denis Maier via ntg-context @ 2022-05-02 7:37 UTC (permalink / raw)
To: ntg-context; +Cc: denis.maier
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Hi,
I've just ran into a behaviour that runs against what is shown on the wiki, https://wiki.contextgarden.net/System_Macros/Comma_Separated_Lists
Maybe a bug?
The wiki says you can use \getcommacommandsize to get the length of a comma separated list, but it does not seem to work. MWE below.
Best,
Denis
\define\somelist
{foo, bar, baz}
\starttext
\getcommacommandsize[\somelist]
\commalistsize
% Expected : 3
% Actual : 1
\expandafter\getcommalistsize\expandafter[\somelist]
\commalistsize
% Expected : 3
% Actual : 3
\stoptext
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^ permalink raw reply [flat|nested] 2+ messages in thread* Re: \getcommacommandsize not working in lmtx
2022-05-02 7:37 \getcommacommandsize not working in lmtx Denis Maier via ntg-context
@ 2022-05-02 9:53 ` Hans Hagen via ntg-context
0 siblings, 0 replies; 2+ messages in thread
From: Hans Hagen via ntg-context @ 2022-05-02 9:53 UTC (permalink / raw)
To: Denis Maier via ntg-context; +Cc: Hans Hagen
On 5/2/2022 9:37 AM, Denis Maier via ntg-context wrote:
> Hi,
>
> I’ve just ran into a behaviour that runs against what is shown on the
> wiki, https://wiki.contextgarden.net/System_Macros/Comma_Separated_Lists
> <https://wiki.contextgarden.net/System_Macros/Comma_Separated_Lists>
>
> Maybe a bug?
More a feature as \define defines a protected macro.
\starttext
\define\somelist{foo,bar,baz}
{\tt\meaningasis\somelist}
\getcommacommandsize[\somelist] \commalistsize
\defineexpandable\somelist{foo,bar,baz}
{\tt\meaningasis\somelist}
\getcommacommandsize[\somelist] \commalistsize
\starttexdefinition protected somelist
foo,
bar,
baz
\stoptexdefinition
{\tt\meaningasis\somelist}
\getcommacommandsize[\somelist] \commalistsize
\starttexdefinition somelist
foo,
bar,
baz
\stoptexdefinition
{\tt\meaningasis\somelist}
\getcommacommandsize[\somelist] \commalistsize
\semiprotected\def\somelist{foo,bar,baz}
\getcommacommandsize[\somelist] \commalistsize
\getcommacommandsize[\semiexpanded{\somelist}] \commalistsize
% also in next version:
%
% \starttexdefinition semiprotected somelist
% foo,
% bar,
% baz
% \stoptexdefinition
%
% {\tt\meaningasis\somelist}
%
% \getcommacommandsize[\somelist] \commalistsize
% \getcommacommandsize[\semiexpanded{\somelist}] \commalistsize
\stoptext
The semiprotected is something lmtx and only expands when explicitly
asked for (like in an \edef or so). Something that we might apply in the
core some day.
Hans
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