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@REPLYADDR Richard Harnden
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On 25/08/2023 21:26, Janis Papanagnou wrote:
> I`m replacing in a *.tex file (e.g.) `\\Omega` character definitions.
>
> In the Unicode tables I find a lot of different "Omegas`, but just
> incoherent character set definitions and with different renderings
> (depending on the output device some are taller, others are thiner).
>
> O (U+03A9) (Greek and Coptic sets; Range: 0370-03FF)
This what you use if you were writing Greek.
> O (U+2126) ohm sign
This is for electronics
>
> ? (U+1D6C0) bold
> ? (U+1D6FA) italic
> ? (U+1D734) bold italic
> ? (U+1D76E) sans-serif bold
> ? (U+1D7A8) sans-serif bold italic
IANAM, but maybe they have different meanings? And could coexist on the
same blackboard. Otherwise you could just have the font do the
bold/italic bit.
>
> The first two are similar (or even the same? tthe latter five
seem > to have all the same dimensions (width/height) but there`s no
plain
> version in that set[*]; so if you mix bold or italic with the plain
> character in a text it looks like garbage.
>
> What`s the rationale behind such incoherent character definitions?
> (Or what am I missing?)
Characters have a specific meaning, but could share or have a very
similar glyph. Like an umlaut and a diaeresis are different - they just
look the same.
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