54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
Note that all `charXXX' entity names have been removed from the font files.
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They don't make sense for Unicode.
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The following from the original troff manual (by Ossanna and Kernighan) is
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unmapped:
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\(bs shaded solid ball (Bell System logo, AT&T logo)
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Character 0x002D has not been given a name because its Unicode name
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"HYPHEN-MINUS" is so ambiguous that it's unusable for serious typographic use.
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\(wp has been mapped to 0x2118, because according to unicode.org's
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NamesList-3.0.0.txt, U+2118 "SCRIPT CAPITAL P" is really a Weierstrass p,
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neither SCRIPT not CAPITAL.
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The following line could be added; "space" is known to "devps" but are not
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documented and not known to "devdvi" (actually, there is no space glyph
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within the TeX system).
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space 24 0 0x0020
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"devps" maps \(a~ and ~ to asciitilde, which is equivalent to 0x02DC, but
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this glyph is just too small. We map them to 0x007E instead.
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"devps" maps \(a^ and ^ to circumflex, which is equivalent to 0x02C6, but
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this glyph is just too small. We map them to 0x005E instead.
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"devps" maps *U to Upsilon1, which is equivalent to 0x03D2. We map it to
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0x03A5 instead.
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"devps" maps *W to Omega, which is equivalent to either 0x2126 or 0x03A9.
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We map it to 0x03A9.
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"devps" maps *D to Delta, which is equivalent to either 0x2206 or 0x0394.
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We map it to 0x0394.
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Using unnamed characters
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------------------------
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Assume you want to use a Unicode character not provided in the list, say
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U+20AC. You need to do two things:
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- Add a line
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--- 24 0 0x20AC
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(the second column is computed as 24 * wcwidth(0x20AC)) to the file
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R.proto, or, when groff is already installed, to the four fonts files in
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$(prefix)/share/groff/<version>/font/devutf8/.
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- In your source file, use the notation \N'8364' where 8364 is the decimal
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representation of 0x20AC.
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