afmtodit - create font files for use with groff -Tps and -Tpdf
] afm_file map_file
The whitespace between a command line option and its argument is optional.
creates a font file for use with groff, grops
is written in perl; you must have perl version
5.004 or newer installed in order to run afmtodit
is the AFM (Adobe Font Metric) file for the font.
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
- ps_char groff_char
is the PostScript name of the character and
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
must occur at most once. Lines starting with #
blank lines are ignored. If the file isn't found in the current directory, it
is searched in the ‘devps/generate’ subdirectory of the default
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
), then afmtodit
puts the PostScript character into the
groff font file as an unnamed character which can only be accessed by the
escape sequence in troff
. In particular, this is true for
glyph variants like ‘foo.bar’; all glyph names containing one or
more periods are mapped to unnamed entities. If option -e
specified, the encoding defined in the AFM file (i.e., entries with
non-negative character codes) is used. Please refer to section ‘Using
Symbols’ in the groff info file 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
option is used.
If there is a downloadable font file for the font, it may be listed in the file
; see grops
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
(5)); these parameters may be specified for individual
characters by adding to the afm_file
lines of the form:
- italicCorrection ps_char n
leftItalicCorrection ps_char n
subscriptCorrection ps_char n
is the PostScript name of the character, and n
the desired value of the corresponding parameter in thousandths of an em.
These parameters are normally needed only for italic (or oblique) fonts.
- 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
- 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
- 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
- The internal name of the groff font is set to
- 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
- 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
- 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 out_file instead of
- Omit any kerning data from the groff font. This should be
used only for mono-spaced fonts.
- Prevent negative left italic correction values. Roman font
files distributed with groff were created with -i0 -m to
improve spacing with eqn(1).
- Don't output a ligatures command for this font. Use
this with constant-width fonts.
- The font is special. The effect of this option is to add
the special command to the font file.
- Print version.
- Don't use the built-in Adobe Glyph List.
- Device description file.
- Font description file for font F.
- List of downloadable fonts.
- Encoding used for text fonts.
- Standard mapping.
The groff info file, section ‘Using Symbols’.
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