Ubuntu Manpage: luaotfload-tool - generate and query the Luaotfload font names database

Provided by: texlive-luatex_2021.20220204-1_all

NAME

       luaotfload-tool - generate and query the Luaotfload font names database

SYNOPSIS

       luaotfload-tool [ -bcDfFiIlLnpqRSuvVhw ]

       luaotfload-tool --update [ --force ] [ --quiet ] [ --verbose ]
              [  --prefer-texmf ] [ --dry-run ] [ --formats=[+|-]EXTENSIONS ] [ --no-compress ] [ --no-strip ] [
              --local ] [ --max-fonts=N ]

       luaotfload-tool --find=FONTNAME [ --fuzzy ] [ --info ] [ --inspect ]
              [ --no-reload ]

       luaotfload-tool --flush-lookups

       luaotfload-tool --cache=DIRECTIVE

       luaotfload-tool --list=CRITERION[:VALUE] [ --fields=F1,F2,...,Fn ]

       luaotfload-tool --bisect=DIRECTIVE

       luaotfload-tool --help

       luaotfload-tool --version

       luaotfload-tool --show-blacklist

       luaotfload-tool --diagnose=CHECK

       luaotfload-tool --conf=FILE --dumpconf

DESCRIPTION

       luaotfload-tool accesses the font names database that is required by the Luaotfload  package.  There  are
       two general modes: update and query.

       • update:  update the database or rebuild it entirely;

       • query:   resolve a font name or display close matches.

OPTIONS

update mode
--update, -u
Update the database; indexes new fonts.

--force, -f
Force rebuilding of the database; re-indexes all fonts.

--local, -L
Include font files in $PWD. This option will cause large parts of the database to be rebuilt. Thus
it is quite inefficient. Additionally, if local font files are found, the database is prevented
from being saved to disk, so the local fonts need to be parsed with every invocation of
luaotfload-tool.

--no-reload, -n
Suppress auto-updates to the database (e.g. when --find is passed an unknown name).

--no-compress, -c
Do not filter the plain text version of the font index through gzip. Useful for debugging if your
editor is built without zlib.

--prefer-texmf, -p
Organize the file name database in a way so that it prefer fonts in the TEXMF tree over system
fonts if they are installed in both.

--formats=EXTENSIONS
Extensions of the font files to index. Where EXTENSIONS is a comma-separated list of supported
file extensions (otf, ttf, ttc). If the list is prefixed with a + sign, the given list is added
to the currently active one; - subtracts. Default: otf,ttf,ttc. Examples:

1. --formats=-ttc,ttf would skip TrueType fonts and font collections;

2. --formats=otf would scan only OpenType files;

3. --formats=+afm includes binary Postscript files accompanied by an AFM file.

query mode
--find=NAME
Resolve a font name; this looks up <name> in the database and prints the file name it is mapped
to. --find also understands request syntax, i.e. --find=file:foo.otf checks whether foo.otf is
indexed.

--fuzzy, -F
Show approximate matches to the file name if the lookup was unsuccessful (requires --find).

--info, -i
Display basic information to a resolved font file (requires --find).

--inspect, -I
Display detailed information by loading the font and analyzing the font table; very slow! For the
meaning of the returned fields see the LuaTeX documentation. (requires --find).

--list=CRITERION
Show entries, where CRITERION is one of the following:

1. the character *, selecting all entries;

2. a field of a database entry, for instance version or format*, according to which the output
will be sorted. Information in an unstripped database (see the option --no-strip above) is
nested: Subfields of a record can be addressed using the -> separator, e. g. file->location,
style->units_per_em, or names->sanitized->english->prefmodifiers. NB: shell syntax requires
that arguments containing -> be properly quoted!

3. an expression of the form field:value to limit the output to entries whose field matches value.
The value can contain * to match an arbitrary number of characters.

For example, in order to output file names and corresponding versions, sorted by the font format:

./luaotfload-tool.lua --list="format" --fields="file->base,version"

This prints:

otf latinmodern-math.otf Version 1.958
otf lmromancaps10-oblique.otf 2.004
otf lmmono8-regular.otf 2.004
otf lmmonoproplt10-bold.otf 2.004
otf lmsans10-oblique.otf 2.004
otf lmromanslant8-regular.otf 2.004
otf lmroman12-italic.otf 2.004
otf lmsansdemicond10-oblique.otf 2.004
...

--fields=FIELDS
Comma-separated list of fields that should be printed. Information in an unstripped database (see
the option --no-strip above) is nested: Subfields of a record can be addressed using the ->
separator, e. g. file->location, style->units_per_em, or names->sanitized->english->subfamily.
The default is plainname,version*. (Only meaningful with --list.)

font and lookup caches
--flush-lookups
Clear font name lookup cache (experimental).

--cache=DIRECTIVE
Cache control, where DIRECTIVE is one of the following:

1. purge -> delete Lua files from cache;

2. erase -> delete Lua and Luc files from cache;

3. show -> print stats.

debugging methods
--show-blacklist, -b
Show blacklisted files (not directories).

--dry-run, -D
Don’t load fonts when updating the database; scan directories only. (For debugging file system
related issues.)

--no-strip
Do not strip redundant information after building the database. Warning: this will inflate the
index to about two to three times the normal size.

--max-fonts=N
Process at most N font files, including fonts already indexed in the count.

--bisect=DIRECTIVE
Bisection of the font database. This mode is intended as assistance in debugging the Luatex
engine, especially when tracking memleaks or buggy fonts.

DIRECTIVE can be one of the following:

1. run -> Make luaotfload-tool respect the bisection progress when running. Combined with
--update and possibly --force this will only process the files from the start up until the
pivot and ignore the rest.

2. start -> Start bisection: create a bisection state file and initialize the low, high, and pivot
indices.

3. stop -> Terminate the current bisection session by deleting the state file.

4. good | bad -> Mark the section processed last as “good” or “bad”, respectively. The next
bisection step will continue with the bad section.

5. status -> Print status information about the current bisection session. Hint: Use with higher
verbosity settings for more output.

A bisection session is initiated by issuing the start directive. This sets the pivot to the middle
of the list of available font files. Now run luaotfload-tool with the --update flag set as well
as --bisect=run: only the fonts up to the pivot will be considered. If that task exhibited the
issue you are tracking, then tell Luaotfload using --bisect=bad. The next step of --bisect=run
will continue bisection with the part of the files below the pivot. Likewise, issue --bisect=good
in order to continue with the fonts above the pivot, assuming the tested part of the list did not
trigger the bug.

Once the culprit font is tracked down, good or bad will have no effect anymore. run will always
end up processing the single font file that was left. Use --bisect=stop to clear the bisection
state.

miscellaneous
--verbose=N, -v
Set verbosity level to n or the number of repetitions of -v.

--quiet
No verbose output (log level set to zero).

--log=CHANNEL
Redirect log output (for database troubleshooting), where CHANNEL can be

1. stdout -> all output will be dumped to the terminal (default); or

2. file -> write to a file to the temporary directory (the name will be chosen automatically.

--version, -V
Show version numbers of components as well as some basic information and exit.

--help, -h
Show help message and exit.

--diagnose=CHECK
Run the diagnostic procedure CHECK. Available procedures are:

1. files -> check Luaotfload files for modifications;

2. permissions -> check permissions of cache directories and files;

environment -> print relevant
environment and kpse variables;

4. repository -> check the git repository for new releases,

5. index -> check database, display information about it.

Procedures can be chained by concatenating with commas, e.g. --diagnose=files,permissions.
Specify thorough to run all checks.

--conf=FILE
Read the configuration from FILE. See luaotfload.conf(%) for documentation concerning the format
and available options.

--dumpconf
Print the currently active configuration; the output can be saved to a file and used for
bootstrapping a custom configuration files.

--aliases
Dump the font name database as a kpathsea aliases file. This option is experimental and might go
away.

FILES

       The font  name  database  is  usually  located  in  the  directory  texmf-var/luatex-cache/generic/names/
       ($TEXMFCACHE   as   set   in  texmf.cnf)  of  your  TeX  Live  distribution  as  a  zlib-compressed  file
       luaotfload-names.lua.gz.  The experimental lookup cache will be created as luaotfload-lookup-cache.lua in
       the same directory.  These Lua tables are not used directly by Luaotfload,  though.   Instead,  they  are
       compiled  to  Lua  bytecode  which  is written to corresponding files with the extension .luc in the same
       directory.  When modifying the files by hand keep in mind that only if the  bytecode  files  are  missing
       will  Luaotfload  use  the plain version instead.  Both kinds of files are safe to delete, at the cost of
       regenerating them with the next run of LuaTeX.

BUGS

       Tons, probably.

AUTHORS

       Luaotfload was developed by  the  LuaLaTeX  dev  team  (https://github.com/lualatex/).  It  is  currently
       maintained  by  the  LaTeX  Project  Team  at https://github.com/latex3/luaotfload The fontloader code is
       provided by Hans Hagen of Pragma ADE, Hasselt NL (http://pragma-ade.com/).

       This manual page was written by Philipp Gesang <phg@phi-gamma.net>.

COPYRIGHT

       GPL v2.0

3.18                                               2021-05-21                                 LUAOTFLOAD-TOOL(1)