afmtodit - create font files for use with groff -Tps and -Tpdf
afmtodit creates a font file for use with groff, grops, and
gropdf. afmtodit is written in Perl; you must have Perl version
5.004 or newer installed in order to run afmtodit.
n] [-d desc-file]
[-i n] [-o
output-file] afm-file map-file
afm-file is the AFM (Adobe Font Metric) file for the
map-file is a file that says which groff character
names map onto each PostScript character name; this file should contain a
sequence of lines of the form
where ps-char is the PostScript name of the character and
groff-char is the groff name of the character (as used in the
groff font file). The same ps-char can occur multiple times in
the file; each groff-char must occur at most once. Lines starting with
‘#’ and blank lines are ignored. If the file isn't found in the
current directory, it is searched for in the devps/generate
subdirectory of the default font directory.
If a PostScript character is not mentioned in map-file, and
a generic groff glyph name can't be deduced using the Adobe Glyph
List (AGL, built into afmtodit), then afmtodit puts the
PostScript character into the groff font file as an unnamed character
which can only be accessed by the ‘\N’ escape sequence in a
roff document. In particular, this is true for glyph variants named
in the form “foo.bar”; all glyph names containing one or more
periods are mapped to unnamed entities. If option -e is not
specified, the encoding defined in the AFM file (i.e., entries with
non-negative character codes) is used. Refer to section “Using
Symbols” in Groff: The GNU Implementation of troff, the
groff Texinfo manual, which describes how groff glyph names
Characters not encoded in the AFM file (i.e., entries which have
‘-1’ as the character code) are still available in
groff; they get glyph index values greater than 255 (or greater than
the biggest character code used in the AFM file in the unlikely case that it
is greater than 255) in the groff font file. Glyph indices of
unencoded characters don't have a specific order; it is best to access them
with glyph names only.
The groff font file will be output to a file called
font, unless the -o option is used.
If there is a downloadable font file for the font, it may be
listed in the file /usr/share/groff/1.22.4/font/devps/download; see
If the -i option is used, afmtodit will
automatically generate an italic correction, a left italic correction and a
subscript correction for each character (the significance of these
parameters is explained in groff_font(5)); these parameters may be
specified for individual characters by adding to the afm-file lines
of the form:
where ps-char is the PostScript name of the character, and n is
the desired value of the corresponding parameter in thousandths of an em.
These parameters are normally needed only for italic (or oblique) fonts.
Whitespace is permitted between a command-line option and its argument.
italicCorrection ps-char n
leftItalicCorrection ps-char n
subscriptCorrection ps-char n
- Use n as the slant parameter in the font file; this is used by
groff in the positioning of accents. By default afmtodit
uses the negative of the ItalicAngle specified in the AFM file;
with true italic fonts it is sometimes desirable to use a slant that is
less than this. If you find that characters from an italic font have
accents placed too far to the right over them, then use the -a
option to give the font a smaller slant.
- Include comments in the font file in order to identify the PostScript
- The device description file is desc-file rather than the default
DESC. If not found in the current directory, the devps
subdirectory of the default font directory is searched (this is true for
both the default device description file and a file given with option
- The PostScript font should be reencoded to use the encoding described in
enc-file. The format of enc-file is described in
grops(1). If not found in the current directory, the devps
subdirectory of the default font directory is searched.
- The internal name of the groff font is set to name.
- Generate an italic correction for each character so that the character's
width plus the character's italic correction is equal to n
thousandths of an em plus the amount by which the right edge of the
character's bounding box is to the right of the character's origin. If
this would result in a negative italic correction, use a zero italic
- Also generate a subscript correction equal to the product of the tangent
of the slant of the font and four fifths of the x-height of the font. If
this would result in a subscript correction greater than the italic
correction, use a subscript correction equal to the italic correction
- Also generate a left italic correction for each character equal to
n thousandths of an em plus the amount by which the left edge of
the character's bounding box is to the left of the character's origin. The
left italic correction may be negative unless option -m is
- This option is normally needed only with italic (or oblique) fonts. The
font files distributed with groff were created using an option of
-i50 for italic fonts.
- The output file is output-file instead of font.
- Omit any kerning data from the groff font; use only for monospaced
- Prevent negative left italic correction values. Roman font files
distributed with groff were created with -i0 -m to
improve spacing with geqn(1).
- Don't output a ligatures command for this font; use with monospaced
- The font is special. The effect of this option is to add the
special command to the font file.
- Print version and exit.
- Don't use the built-in Adobe Glyph List.
Groff: The GNU Implementation of troff, by Trent A. Fisher and Werner
Lemberg, is the primary groff manual. Section “Using
Symbols” may be of particular note. You can browse it interactively
with “info '(groff)Using Symbols'”.
- Device description file.
- Font description file for font F.
- List of downloadable fonts.
- Encoding used for text fonts.
- Standard mapping.
groff(1), gropdf(1), grops(1),