Hi, Thanks for your suggestions, they work ! However, I'm not sure I fully understand : why do the letters p, P, m or M generate this error when they work in the example below ?
\starttext \hskip 1em n=0 \stoptext Fabrice Le sam. 24 janv. 2026 à 20:45, Wolfgang Schuster < [email protected]> a écrit : > Am 24.01.2026 um 20:23 schrieb Rogers, Michael K: > > Hi, > > > > It appears that \hskip is parsing the “P” as part of the skip amount. > > You get similar trouble with “M”, “p”, and “m”. > > Engines like pdfTeX or LuaTeX are stricter and expect the complete > optional argument (e.g. plus or minus) but LuaMetaTeX only takes a look > at the first letter the determine (e.g. p or m) if it's an optional > argument. > > > Putting \relax at the end of the skip amount works for me. Perhaps there > > is a better solution? > > > > … > > \hskip 1ex def proba(k): > > > > \hskip 1ex\relax P = 0 > > > > \hskip 1ex for i in range(0,k+1): > > … > > A recent addition to the dimension (and number) scanner in LuaMetaTeX > are braced arguments which removes the need for \relax, in addition you > can use \numexpr expression (e.g. \hskip{1em+2em}). > > \starttext > > a\hskip 1em b > > a\hskip 1em plus 1em b > > a\hskip {1em} plus 1em b > > \stoptext > > Wolfgang > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to > the Wiki! > > maillist : [email protected] / > https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl > webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) > archive : https://github.com/contextgarden/context > wiki : https://wiki.contextgarden.net > > ___________________________________________________________________________________ >
___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : [email protected] / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________
