Hi Gavin Thank four your effort. I found out, that the following definition of a new unit, i called it SI, results also in a correct spaceing in the math environment:

\defineunit[SI][alternative=text] It seems, that the option alternative=text solves the problem with no spaces between value and unit in the math environment. Maybe this can be used to solve it easier in the code. I will have a look at phys-dim to solve it directly, if I find the time. Best regards Oli > Am 12.10.2022 um 23:54 schrieb Gavin via ntg-context - ntg-context at ntg.nl > <ntg-context_at_ntg_nl_vqmp...@simplelogin.co>: > > Hi Max, Alan, Bruce, Hans, et.al > > I solved my four issues with \unit spacing. In the process, I prevented > unwanted line breaks and removed an overzealous backspace before division > symbols. Below is a MWE that shows all of these issues, as well as pictures > of the result with the unmodified phys-dim.mkxl and with my modified > phys-dim.mkxl. The final result is exactly what I wanted. > > If anyone wants my changes, either for their own use or to improve the > distributed phys-dim.mkxl, Iām happy to share. > > Thanks for all of your comments! > Gavin > > > MWE: > > \setuppapersize[A5] > > \starttext > > The \type{\unit} command in text produces \unit{1.23e5 kg m^2/s^2}. > > Inline math \type{$\unit$} produces $\unit{1.23e5 kg m^2/s^2}$. > > Display math produces > \startformula > \unit{1.23e5 kg m^2/s^2} + \unit{8.64e5 newton m} = \unit{987,000 joule} > \stopformula > > Line breaking in math: > > {\hsize=0pt $G = \unit{6.6743e-11 m3 kg-1 s-2}$} > > \blank > Line breaking in text: > > {\hsize=0pt \unit{6.6743e-11 m3 kg-1 s-2}} > > \stoptext > > Output with unmodified phys-dim.mkxl: > <PastedGraphic-3.pdf> > > Output with my modified phys-dim.mkxl: > <PastedGraphic-2.pdf> > > > >> On Oct 10, 2022, at 12:15 AM, Max Chernoff via ntg-context >> <ntg-context@ntg.nl> wrote: >> >> Hi Alan, >> >>> I would very strongly argue that the space between the number and the >>> following units be UNBREAKABLE. Perhaps a thin space (preference), but >>> most certainly non-breakable. >>> >>> Similarly around the times in scientific notation. >>> >>> I further cannot imagine that a line break be acceptable around a \cdot >>> in composite units. >>> >>> This can possibly lead to overfill and underfill, something that I find >>> *infinitely* more acceptable then breaking numbers and units. >> >> Yes, I agree completely here. >> >>> I do not know or use the \units command. Maybe it uses unbreakable >>> spaces, maybe not. I would never use it unless it could be configured >>> to only use nonbreakable spaces. >> >> The current behaviour doesn't break the unit from the number, but it >> does split the scientific notation. >> >> This test file: >> >> \starttext >> \hsize=0pt Math: $G = \unit{6.6743e-11 m3 kg-1 s-2}$ >> >> \hsize=0pt Text: \unit{6.6743e-11 m3 kg-1 s-2} >> \stoptext >> >> gives: >> >> Math: >> šŗ= >> 6.6743Ć >> 10ā11m3ā kgā1ā sā2 >> Text: >> 6.6743 >> Ć >> 10ā11 m3ā kgā1ā sā2 >> >> which isn't great. In my opinion, the \unit command should be typeset in an >> \hbox (or similar) since I can't think of any circumstances where breaking >> it would be reasonable. >> >> Thanks, >> -- Max >> ___________________________________________________________________________________ >> If your question is of interest to others as well, please add an entry to >> the Wiki! >> >> maillist : ntg-context@ntg.nl / >> https://www.ntg.nl/mailman/listinfo/ntg-context >> webpage : https://www.pragma-ade.nl / http://context.aanhet.net >> archive : https://bitbucket.org/phg/context-mirror/commits/ >> wiki : https://contextgarden.net >> ___________________________________________________________________________________ > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the > Wiki! > > maillist : ntg-context@ntg.nl / > https://www.ntg.nl/mailman/listinfo/ntg-context > webpage : https://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : https://contextgarden.net > ___________________________________________________________________________________

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___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________