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 entity from the original troff manual (by Ossanna and
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Kernighan) is 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 is unusable for serious typographic
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use.
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\[wp] has been mapped to 0x2118, because according to Unicode 4.1's
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NamesList.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 is not
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documented and not known to devdvi (actually, there is no space glyph within
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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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Adding Unicode 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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u20AC 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 \[u20AC] to access it.
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