Re: [NTG-context] Invalid keyword \spaceskip

On 6/27/2021 11:36 AM, Steffen Wolfrum wrote:

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Am 27.06.2021 um 09:16 schrieb Hans Hagen :

On 6/26/2021 11:56 PM, Wolfgang Schuster wrote:

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Steffen Wolfrum schrieb am 26.06.2021 um 23:38:

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Am 26.06.2021 um 22:43 schrieb Wolfgang Schuster :

Steffen Wolfrum schrieb am 26.06.2021 um 22:26:

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PS: with

% engine=luatex

it works fine. Add \relax after the last skip value, i.e.

\spaceskip = 1pt plus 1pt minus 1.5pt\relax

LMTX allows multiple plus and minus values for a skip value and the M in Matilda starts the scan for an additional minus value. Wow, this sounds interesting. Is there an example of how to use multiple values? I think the only examples are in mails from Hans. When you set multiple plus or minus values (as far as i remember) only the last setting is used and all previous ones are ignored. Maybe in some article. Anyway, here is an example:

\starttext test \skip0=10pt plus 10pt minus 10pt plus 20pt

test \skip0=10pt plus 10pt plus 20pt minus 10pt

test \vrule width 10pt height 10pt depth 10pt depth 10pt height 10pt

% test \hbox to 10pt to 10pt {x}

\stoptext

compare pdftex and luametatex.

ok. but why does this run fine

\starttext

Test \spaceskip = 1.0pt plus 1pt minus 1.5pt Wolfgang

\stoptext

while this ends in an error message?

\starttext

Test \spaceskip = 1.0pt plus 1pt minus 1.5pt Matilda

\stoptext

because scanning is case insensitive so the m triggeres the keyword error ... keep in mind that by omitting a \relax you've always been lucky so far (probably no follow up texts that had plus or minus) .. luametatex just warns earlier Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------