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font/devutf8/NOTES
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G. Branden Robinson
[docs]: Reduce use of term "entity".
25 апр 2023, 07:58
25 апр 2023, 07:58
0223aef
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All \[charXXX] special character names have been removed from the font files. They don't make sense for Unicode. The following special character name from the AT&T troff manual by Ossanna and Kernighan is unmapped: bs shaded solid ball (Bell System logo, AT&T logo) Code point 0x002D has not been given a name because its Unicode name HYPHEN-MINUS is so ambiguous that it is unusable for serious typographic work. \[wp] has been mapped to 0x2118, because according to Unicode 4.1's NamesList.txt, U+2118 SCRIPT CAPITAL P is really a Weierstrass 'p', neither SCRIPT nor CAPITAL. The following line could be added; \[space] is known to devps but is not documented and not known to devdvi (actually, there is no space glyph within the TeX system). space 24 0 0x0020 devps maps \[*U] to 'Upsilon1', which is equivalent to 0x03D2. We map it to 0x03A5 instead. devps maps \[*W] to 'Omega', which is equivalent to either 0x2126 or 0x03A9. We map it to 0x03A9. devps maps \[*D] to 'Delta', which is equivalent to either 0x2206 or 0x0394. We map it to 0x0394. Adding Unicode characters ------------------------- Assume you want to use a Unicode character not provided in the list, say U+20AC. You need to do two things: - Add a line u20AC 24 0 0x20AC (the second column is computed as 24 * wcwidth(0x20AC)) to the file R.proto, or, when groff is already installed, to the four font description files in $(prefix)/share/groff/<version>/font/devutf8/. - In your source file, use the notation \[u20AC] to access it.