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Name | Synopsis | Description | Options | Files | Diagnostics | See also | COLOPHON |
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afmtodit(1) General Commands Manual afmtodit(1)
afmtodit - adapt Adobe Font Metrics files for groff PostScript and
PDF output
afmtodit [-ckmnqsx] [-a slant] [-d device-description-file]
[-e encoding-file] [-f internal-name] [-i italic-
correction-factor] [-o output-file] [-w space-width] afm-
file map-file font-description-file
afmtodit --help
afmtodit -v
afmtodit --version
afmtodit generates a font description file for use with groff(1)'s
ps and pdf output devices from an Adobe Font Metric file, afm-
file. map-file associates a groff ordinary or special character
name with a PostScript glyph name. Output is written in
groff_font(5) format to font-description-file, a file named for
the intended groff font name (but see the -o option).
map-file should contain a sequence of lines of the form
ps-glyph groff-char
where ps-glyph is the PostScript glyph name and groff-char is a
groff ordinary (if of unit length) or special (if longer)
character identifier. The same ps-glyph 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 sought in the devps/generate
subdirectory of the default font directory.
If a PostScript glyph is not mentioned in map-file, and a groff
character name can't be deduced using the Adobe Glyph List (AGL,
built into afmtodit), then afmtodit puts the PostScript glyph into
the groff font description file as an unnamed glyph 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. Unless -e is specified, the encoding
defined in the AFM file (i.e., entries with non-negative codes) is
used. Refer to section “Using Symbols” in Groff: The GNU
Implementation of troff, the groff Texinfo manual, or
groff_char(7), which describe how groff character identifiers are
constructed.
Glyphs not encoded in the AFM file (i.e., entries indexed as “-1”)
are still available in groff; they get glyph index values greater
than 255 (or greater than the biggest code used in the AFM file in
the unlikely case that it is greater than 255) in the groff font
description file. Unencoded glyph indices don't have a specific
order; it is best to access them only via special character
identifiers.
If the font file proper (not just its metrics) is available,
listing it in the files /usr/local/share/groff/1.23.0/font/devps/
download and /usr/local/share/groff/1.23.0/font/devpdf/download
enables it to be embedded in the output produced by grops(1) and
gropdf(1), respectively.
If the -i option is used, afmtodit automatically generates an
italic correction, a left italic correction, and a subscript
correction for each glyph (the significance of these is explained
in groff_font(5)); they can be specified for individual glyphs by
adding to the afm-file lines of the form:
italicCorrection ps-glyph n
leftItalicCorrection ps-glyph n
subscriptCorrection ps-glyph n
where ps-glyph is the PostScript glyph name, and n is the desired
value of the corresponding parameter in thousandths of an em.
Such parameters are normally needed only for italic (or oblique)
fonts.
The -s option should be given if the font is “special”, meaning
that groff should search it whenever a glyph is not found in the
current font. To enable this search, font-description-file can be
listed as an argument to the fonts directive in the output
device's DESC file; alternatively, a document can designate it
with the special request. If the font is not special, there is no
need to do either, since troff(1) will automatically mount it when
it is first used.
--help displays a usage message, while -v and --version show
version information; all exit afterward.
-a slant
Use slant as the slant (“angle”) parameter in the font
description 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 an italic font places accents
over base glyphs too far to the right, use -a to give it a
smaller slant.
-c Include comments in the font description file identifying
the PostScript font.
-d device-description-file
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 -d).
-e encoding-file
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.
-f internal-name
The internal name of the groff font is set to name.
-i italic-correction-factor
Generate an italic correction for each glyph so that its
width plus its italic correction is equal to italic-
correction-factor thousandths of an em plus the amount by
which the right edge of the glyph's bounding box is to the
right of its origin. If this would result in a negative
italic correction, use a zero italic correction instead.
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
instead.
Also generate a left italic correction for each glyph equal
to italic-correction-factor thousandths of an em plus the
amount by which the left edge of the glyph's bounding box
is to the left of its origin. The left italic correction
may be negative unless option -m is given.
This option is normally needed only with italic (or
oblique) fonts. The font description files distributed
with groff were created using an option of -i50 for italic
fonts.
-o output-file
Write to output-file instead of font-description-file.
-k Omit any kerning data from the groff font; use only for
monospaced (constant-width) fonts.
-m Prevent negative left italic correction values. Font
description files for roman styles distributed with groff
were created with “-i0 -m” to improve spacing with eqn(1).
-n Don't output a ligatures command for this font; use with
monospaced (constant-width) fonts.
-q Quieten duplicate mapping warnings; see section
“Diagnostics” below.
-s Add the special directive to the font description file.
-w space-width
Use space-width as the width of inter-word spaces.
-x Don't use the built-in Adobe Glyph List.
/usr/local/share/groff/1.23.0/font/devps/DESC
describes the ps output device.
/usr/local/share/groff/1.23.0/font/devps/F
describes the font known as F on device ps.
/usr/local/share/groff/1.23.0/font/devps/download
lists fonts available for embedding within the PostScript
document (or download to the device).
/usr/local/share/groff/1.23.0/font/devps/generate/dingbats.map
/usr/local/share/groff/1.23.0/font/devps/generate/
dingbats-reversed.map
/usr/local/share/groff/1.23.0/font/devps/generate/
slanted-symbol.map
/usr/local/share/groff/1.23.0/font/devps/generate/symbol.map
/usr/local/share/groff/1.23.0/font/devps/generate/text.map
map names in the Adobe Glyph List to groff special
character identifiers for Zapf Dingbats (ZD), reversed Zapf
Dingbats (ZDR), slanted symbol (SS), symbol (S), and text
fonts, respectively. These map-files produce the font
description files provided with groff for the grops output
driver.
AGL name 'x' already mapped to groff name 'y'; ignoring AGL name
'uniXXXX'
You can disregard these if they're in the form shown, where
the ignored AGL name contains four hexadecimal digits XXXX.
The Adobe Glyph List (AGL) has its own names for glyphs;
they are often different from groff's special character
names. afmtodit is constructing a mapping from groff
special character names to AGL names; this can be a one-to-
one or many-to-one mapping, but one-to-many will not work,
so afmtodit discards the excess mappings. For example, if
x is Delta, y is *D, and XXXX is 0394, afmtodit is telling
you that the groff font description that it is writing
cannot map the groff special character \[*D] to AGL glyphs
Delta and uni0394 at the same time.
If you get a message like this but are unhappy with which
mapping is ignored, a remedy is to craft an alternative
map-file and re-run afmtodit using it.
When the -q option is used, these messages are suppressed
in favor of a count of how many would have been emitted
were the option not present.
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'”.
groff(1), gropdf(1), grops(1), groff_font(5)
This page is part of the groff (GNU troff) project. Information
about the project can be found at
⟨http://www.gnu.org/software/groff/⟩. If you have a bug report for
this manual page, see ⟨http://www.gnu.org/software/groff/⟩. This
page was obtained from the project's upstream Git repository
⟨https://git.savannah.gnu.org/git/groff.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-09.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
groff 1.23.0.3821-a8b3f 2025-08-09 afmtodit(1)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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