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Diffstat (limited to 'font/devutf8/NOTES')
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diff --git a/font/devutf8/NOTES b/font/devutf8/NOTES new file mode 100644 index 00000000..064b7baf --- /dev/null +++ b/font/devutf8/NOTES @@ -0,0 +1,91 @@ +The following from the original troff manual (by Ossanna and Kernighan) is +unmapped: + + \(bs solid ball + +Character 0x002D has not been given a name because its Unicode name +"HYPHEN-MINUS" is so ambiguous that it's unusable for serious typographic use. + +The following are mentioned in the original troff manual but not in +groff_char.7: + + \(sr square root + \(rn overline + \(is integral sign + +The following, mentioned in the original troff manual, are only approximate: + + \(lk middle part of big left curly brace + \(rk middle part of big right curly brace + +\(bv has been mapped to 0x2502, not 0x2759, because it appears to mean +"bar vertical", not "bold vertical". + +\(wp has been mapped to 0x2118, because according to unicode.org's +NamesList-3.0.0.txt, U+2118 "SCRIPT CAPITAL P" is really a Weierstrass p, +neither SCRIPT not CAPITAL. + +The following lines could be added, to define names which are known to +"devps" but are not documented and not known to "devdvi". +space 24 0 0x0020 +vS 24 0 0x0160 +vs 24 0 0x0161 +:Y 24 0 0x0178 +vZ 24 0 0x017D +vz 24 0 0x017E +3d 24 0 0x2234 +nb 24 0 0x2284 +product 24 0 0x220F +sum 24 0 0x2211 +SP 24 0 0x2660 +CL 24 0 0x2663 +HE 24 0 0x2665 +DI 24 0 0x2666 + +"devps" maps \(a~ and ~ to asciitilde, which is equivalent to 0x02DC, but +this glyph is just too small. We map them to 0x007E instead. + +"devps" maps \(a^ and ^ to circumflex, which is equivalent to 0x02C6, but +this glyph is just too small. We map them to 0x005E instead. + +"devps" maps *m to mu, which is equivalent to either 0x00B5 or 0x03BC. We +map it to 0x03BC. + +"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. + +"devps" maps CR to carriagereturn, which is equivalent to 0x21B5. We map it +to 0x240D instead. + +"devps" maps md to dotmath, which is equivalent to 0x22C5. We map it to 0x00B7 +instead. + +The line +char173 24 0 0x00AD +has been removed, because tmac.tty contains the line +".if c\[char173] .shc \[char173]" +(i.e. if char173 is defined, then tell the troff engine that it shall use +char173 as soft hyphen - otherwise it will use hy = HYPHEN), and char173 in +Markus Kuhn's UCS-fonts looks more like a minus sign than like a hyphen. +Once Markus Kuhn's fonts are fixed, this line should be added again, because +ISO-8859-x describes the soft hyphen character as "a graphic character that +is imaged by a graphic symbol identical with, or similar to, that representing +HYPHEN, for use when a line break has been established within a word" - which +is exactly groff's use of 'shc'. + +Using unnamed 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 "--- 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 fonts files in + $(prefix)/share/groff/font/devutf8/. +- In your source file, use the notation \N'8364' where 8364 is the decimal + representation of 0x20AC. + |