5 fonts.conf -- Font configuration files
12 $XDG_CONFIG_HOME/fontconfig/conf.d
13 $XDG_CONFIG_HOME/fontconfig/fonts.conf
19 Fontconfig is a library designed to provide system-wide font
20 configuration, customization and application access.
24 Fontconfig contains two essential modules, the configuration
25 module which builds an internal configuration from XML files
26 and the matching module which accepts font patterns and returns
27 the nearest matching font.
31 The configuration module consists of the FcConfig datatype,
32 libexpat and FcConfigParse which walks over an XML tree and
33 amends a configuration with data found within. From an external
34 perspective, configuration of the library consists of
35 generating a valid XML tree and feeding that to FcConfigParse.
36 The only other mechanism provided to applications for changing
37 the running configuration is to add fonts and directories to
38 the list of application-provided font files.
40 The intent is to make font configurations relatively static,
41 and shared by as many applications as possible. It is hoped
42 that this will lead to more stable font selection when passing
43 names from one application to another. XML was chosen as a
44 configuration file format because it provides a format which is
45 easy for external agents to edit while retaining the correct
48 Font configuration is separate from font matching; applications
49 needing to do their own matching can access the available fonts
50 from the library and perform private matching. The intent is to
51 permit applications to pick and choose appropriate
52 functionality from the library instead of forcing them to
53 choose between this library and a private configuration
54 mechanism. The hope is that this will ensure that configuration
55 of fonts for all applications can be centralized in one place.
56 Centralizing font configuration will simplify and regularize
57 font installation and customization.
61 While font patterns may contain essentially any properties,
62 there are some well known properties with associated types.
63 Fontconfig uses some of these properties for font matching and
64 font completion. Others are provided as a convenience for the
65 applications' rendering mechanism.
66 Property Type Description
67 --------------------------------------------------------------
68 family String Font family names
69 familylang String Languages corresponding to each family
70 style String Font style. Overrides weight and slant
71 stylelang String Languages corresponding to each style
72 fullname String Font full names (often includes style)
73 fullnamelang String Languages corresponding to each fullname
74 slant Int Italic, oblique or roman
75 weight Int Light, medium, demibold, bold or black
76 size Double Point size
77 width Int Condensed, normal or expanded
78 aspect Double Stretches glyphs horizontally before hinting
79 pixelsize Double Pixel size
80 spacing Int Proportional, dual-width, monospace or charcel
82 foundry String Font foundry name
83 antialias Bool Whether glyphs can be antialiased
84 hinting Bool Whether the rasterizer should use hinting
85 hintstyle Int Automatic hinting style
86 verticallayout Bool Use vertical layout
87 autohint Bool Use autohinter instead of normal hinter
88 globaladvance Bool Use font global advance data (deprecated)
89 file String The filename holding the font
90 index Int The index of the font within the file
91 ftface FT_Face Use the specified FreeType face object
92 rasterizer String Which rasterizer is in use (deprecated)
93 outline Bool Whether the glyphs are outlines
94 scalable Bool Whether glyphs can be scaled
95 color Bool Whether any glyphs have color
96 scale Double Scale factor for point->pixel conversions (dep
98 dpi Double Target dots per inch
99 rgba Int unknown, rgb, bgr, vrgb, vbgr,
100 none - subpixel geometry
101 lcdfilter Int Type of LCD filter
102 minspace Bool Eliminate leading from line spacing
103 charset CharSet Unicode chars encoded by the font
104 lang String List of RFC-3066-style languages this
106 fontversion Int Version number of the font
107 capability String List of layout capabilities in the font
108 fontformat String String name of the font format
109 embolden Bool Rasterizer should synthetically embolden the f
111 embeddedbitmap Bool Use the embedded bitmap instead of the outline
112 decorative Bool Whether the style is a decorative variant
113 fontfeatures String List of the feature tags in OpenType to be ena
115 namelang String Language name to be used for the default value
117 familylang, stylelang, and fullnamelang
118 prgname String String Name of the running program
119 postscriptname String Font family name in PostScript
123 Fontconfig performs matching by measuring the distance from a
124 provided pattern to all of the available fonts in the system.
125 The closest matching font is selected. This ensures that a font
126 will always be returned, but doesn't ensure that it is anything
127 like the requested pattern.
129 Font matching starts with an application constructed pattern.
130 The desired attributes of the resulting font are collected
131 together in a pattern. Each property of the pattern can contain
132 one or more values; these are listed in priority order; matches
133 earlier in the list are considered "closer" than matches later
136 The initial pattern is modified by applying the list of editing
137 instructions specific to patterns found in the configuration;
138 each consists of a match predicate and a set of editing
139 operations. They are executed in the order they appeared in the
140 configuration. Each match causes the associated sequence of
141 editing operations to be applied.
143 After the pattern has been edited, a sequence of default
144 substitutions are performed to canonicalize the set of
145 available properties; this avoids the need for the lower layers
146 to constantly provide default values for various font
147 properties during rendering.
149 The canonical font pattern is finally matched against all
150 available fonts. The distance from the pattern to the font is
151 measured for each of several properties: foundry, charset,
152 family, lang, spacing, pixelsize, style, slant, weight,
153 antialias, rasterizer and outline. This list is in priority
154 order -- results of comparing earlier elements of this list
155 weigh more heavily than later elements.
157 There is one special case to this rule; family names are split
158 into two bindings; strong and weak. Strong family names are
159 given greater precedence in the match than lang elements while
160 weak family names are given lower precedence than lang
161 elements. This permits the document language to drive font
162 selection when any document specified font is unavailable.
164 The pattern representing that font is augmented to include any
165 properties found in the pattern but not found in the font
166 itself; this permits the application to pass rendering
167 instructions or any other data through the matching system.
168 Finally, the list of editing instructions specific to fonts
169 found in the configuration are applied to the pattern. This
170 modified pattern is returned to the application.
172 The return value contains sufficient information to locate and
173 rasterize the font, including the file name, pixel size and
174 other rendering data. As none of the information involved
175 pertains to the FreeType library, applications are free to use
176 any rasterization engine or even to take the identified font
177 file and access it directly.
179 The match/edit sequences in the configuration are performed in
180 two passes because there are essentially two different
181 operations necessary -- the first is to modify how fonts are
182 selected; aliasing families and adding suitable defaults. The
183 second is to modify how the selected fonts are rasterized.
184 Those must apply to the selected font, not the original pattern
185 as false matches will often occur.
189 Fontconfig provides a textual representation for patterns that
190 the library can both accept and generate. The representation is
191 in three parts, first a list of family names, second a list of
192 point sizes and finally a list of additional properties:
193 <families>-<point sizes>:<name1>=<values1>:<name2>=<values2>...
195 Values in a list are separated with commas. The name needn't
196 include either families or point sizes; they can be elided. In
197 addition, there are symbolic constants that simultaneously
198 indicate both a name and a value. Here are some examples:
200 ----------------------------------------------------------
201 Times-12 12 point Times Roman
202 Times-12:bold 12 point Times Bold
203 Courier:italic Courier Italic in the default size
204 Monospace:matrix=1 .1 0 1 The users preferred monospace font
205 with artificial obliquing
207 The '\', '-', ':' and ',' characters in family names must be
208 preceded by a '\' character to avoid having them
209 misinterpreted. Similarly, values containing '\', '=', '_', ':'
210 and ',' must also have them preceded by a '\' character. The
211 '\' characters are stripped out of the family name and values
212 as the font name is read.
214 Debugging Applications
216 To help diagnose font and applications problems, fontconfig is
217 built with a large amount of internal debugging left enabled.
218 It is controlled by means of the FC_DEBUG environment variable.
219 The value of this variable is interpreted as a number, and each
220 bit within that value controls different debugging messages.
222 ---------------------------------------------------------
223 MATCH 1 Brief information about font matching
224 MATCHV 2 Extensive font matching information
225 EDIT 4 Monitor match/test/edit execution
226 FONTSET 8 Track loading of font information at startup
227 CACHE 16 Watch cache files being written
228 CACHEV 32 Extensive cache file writing information
229 PARSE 64 (no longer in use)
230 SCAN 128 Watch font files being scanned to build caches
231 SCANV 256 Verbose font file scanning information
232 MEMORY 512 Monitor fontconfig memory usage
233 CONFIG 1024 Monitor which config files are loaded
234 LANGSET 2048 Dump char sets used to construct lang values
235 MATCH2 4096 Display font-matching transformation in patterns
237 Add the value of the desired debug levels together and assign
238 that (in base 10) to the FC_DEBUG environment variable before
239 running the application. Output from these statements is sent
244 Each font in the database contains a list of languages it
245 supports. This is computed by comparing the Unicode coverage of
246 the font with the orthography of each language. Languages are
247 tagged using an RFC-3066 compatible naming and occur in two
248 parts -- the ISO 639 language tag followed a hyphen and then by
249 the ISO 3166 country code. The hyphen and country code may be
252 Fontconfig has orthographies for several languages built into
253 the library. No provision has been made for adding new ones
254 aside from rebuilding the library. It currently supports 122 of
255 the 139 languages named in ISO 639-1, 141 of the languages with
256 two-letter codes from ISO 639-2 and another 30 languages with
257 only three-letter codes. Languages with both two and three
258 letter codes are provided with only the two letter code.
260 For languages used in multiple territories with radically
261 different character sets, fontconfig includes per-territory
262 orthographies. This includes Azerbaijani, Kurdish, Pashto,
263 Tigrinya and Chinese.
265 Configuration File Format
267 Configuration files for fontconfig are stored in XML format;
268 this format makes external configuration tools easier to write
269 and ensures that they will generate syntactically correct
270 configuration files. As XML files are plain text, they can also
271 be manipulated by the expert user using a text editor.
273 The fontconfig document type definition resides in the external
274 entity "fonts.dtd"; this is normally stored in the default font
275 configuration directory (/etc/fonts). Each configuration file
276 should contain the following structure:
277 <?xml version="1.0"?>
278 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
285 This is the top level element for a font configuration and can
286 contain <dir>, <cachedir>, <include>, <match> and <alias>
287 elements in any order.
289 <dir prefix="default">
291 This element contains a directory name which will be scanned
292 for font files to include in the set of available fonts. If
293 'prefix' is set to "xdg", the value in the XDG_DATA_HOME
294 environment variable will be added as the path prefix. please
295 see XDG Base Directory Specification for more details.
297 <cachedir prefix="default">
299 This element contains a directory name that is supposed to be
300 stored or read the cache of font information. If multiple
301 elements are specified in the configuration file, the directory
302 that can be accessed first in the list will be used to store
303 the cache files. If it starts with '~', it refers to a
304 directory in the users home directory. If 'prefix' is set to
305 "xdg", the value in the XDG_CACHE_HOME environment variable
306 will be added as the path prefix. please see XDG Base Directory
307 Specification for more details. The default directory is
308 ``$XDG_CACHE_HOME/fontconfig'' and it contains the cache files
309 named ``<hash value>-<architecture>.cache-<version>'', where
310 <version> is the fontconfig cache file version number
313 <include ignore_missing="no" prefix="default">
315 This element contains the name of an additional configuration
316 file or directory. If a directory, every file within that
317 directory starting with an ASCII digit (U+0030 - U+0039) and
318 ending with the string ``.conf'' will be processed in sorted
319 order. When the XML datatype is traversed by FcConfigParse, the
320 contents of the file(s) will also be incorporated into the
321 configuration by passing the filename(s) to
322 FcConfigLoadAndParse. If 'ignore_missing' is set to "yes"
323 instead of the default "no", a missing file or directory will
324 elicit no warning message from the library. If 'prefix' is set
325 to "xdg", the value in the XDG_CONFIG_HOME environment variable
326 will be added as the path prefix. please see XDG Base Directory
327 Specification for more details.
331 This element provides a place to consolidate additional
332 configuration information. <config> can contain <blank> and
333 <rescan> elements in any order.
337 Fonts often include "broken" glyphs which appear in the
338 encoding but are drawn as blanks on the screen. Within the
339 <blank> element, place each Unicode characters which is
340 supposed to be blank in an <int> element. Characters outside of
341 this set which are drawn as blank will be elided from the set
342 of characters supported by the font.
346 The <rescan> element holds an <int> element which indicates the
347 default interval between automatic checks for font
348 configuration changes. Fontconfig will validate all of the
349 configuration files and directories and automatically rebuild
350 the internal datastructures when this interval passes.
354 This element is used to black/white list fonts from being
355 listed or matched against. It holds acceptfont and rejectfont
360 Fonts matched by an acceptfont element are "whitelisted"; such
361 fonts are explicitly included in the set of fonts used to
362 resolve list and match requests; including them in this list
363 protects them from being "blacklisted" by a rejectfont element.
364 Acceptfont elements include glob and pattern elements which are
369 Fonts matched by an rejectfont element are "blacklisted"; such
370 fonts are excluded from the set of fonts used to resolve list
371 and match requests as if they didn't exist in the system.
372 Rejectfont elements include glob and pattern elements which are
377 Glob elements hold shell-style filename matching patterns
378 (including ? and *) which match fonts based on their complete
379 pathnames. This can be used to exclude a set of directories
380 (/usr/share/fonts/uglyfont*), or particular font file types
381 (*.pcf.gz), but the latter mechanism relies rather heavily on
382 filenaming conventions which can't be relied upon. Note that
383 globs only apply to directories, not to individual fonts.
387 Pattern elements perform list-style matching on incoming fonts;
388 that is, they hold a list of elements and associated values. If
389 all of those elements have a matching value, then the pattern
390 matches the font. This can be used to select fonts based on
391 attributes of the font (scalable, bold, etc), which is a more
392 reliable mechanism than using file extensions. Pattern elements
393 include patelt elements.
395 <patelt name="property">
397 Patelt elements hold a single pattern element and list of
398 values. They must have a 'name' attribute which indicates the
399 pattern element name. Patelt elements include int, double,
400 string, matrix, bool, charset and const elements.
402 <match target="pattern">
404 This element holds first a (possibly empty) list of <test>
405 elements and then a (possibly empty) list of <edit> elements.
406 Patterns which match all of the tests are subjected to all the
407 edits. If 'target' is set to "font" instead of the default
408 "pattern", then this element applies to the font name resulting
409 from a match rather than a font pattern to be matched. If
410 'target' is set to "scan", then this element applies when the
411 font is scanned to build the fontconfig database.
413 <test qual="any" name="property" target="default" compare="eq">
415 This element contains a single value which is compared with the
416 target ('pattern', 'font', 'scan' or 'default') property
417 "property" (substitute any of the property names seen above).
418 'compare' can be one of "eq", "not_eq", "less", "less_eq",
419 "more", "more_eq", "contains" or "not_contains". 'qual' may
420 either be the default, "any", in which case the match succeeds
421 if any value associated with the property matches the test
422 value, or "all", in which case all of the values associated
423 with the property must match the test value. 'ignore-blanks'
424 takes a boolean value. if 'ignore-blanks' is set "true", any
425 blanks in the string will be ignored on its comparison. this
426 takes effects only when compare="eq" or compare="not_eq". When
427 used in a <match target="font"> element, the target= attribute
428 in the <test> element selects between matching the original
429 pattern or the font. "default" selects whichever target the
430 outer <match> element has selected.
432 <edit name="property" mode="assign" binding="weak">
434 This element contains a list of expression elements (any of the
435 value or operator elements). The expression elements are
436 evaluated at run-time and modify the property "property". The
437 modification depends on whether "property" was matched by one
438 of the associated <test> elements, if so, the modification may
439 affect the first matched value. Any values inserted into the
440 property are given the indicated binding ("strong", "weak" or
441 "same") with "same" binding using the value from the matched
442 pattern element. 'mode' is one of:
443 Mode With Match Without Match
444 ---------------------------------------------------------------------
445 "assign" Replace matching value Replace all values
446 "assign_replace" Replace all values Replace all values
447 "prepend" Insert before matching Insert at head of list
448 "prepend_first" Insert at head of list Insert at head of list
449 "append" Append after matching Append at end of list
450 "append_last" Append at end of list Append at end of list
451 "delete" Delete matching value Delete all values
452 "delete_all" Delete all values Delete all values
454 <int>, <double>, <string>, <bool>
456 These elements hold a single value of the indicated type.
457 <bool> elements hold either true or false. An important
458 limitation exists in the parsing of floating point numbers --
459 fontconfig requires that the mantissa start with a digit, not a
460 decimal point, so insert a leading zero for purely fractional
461 values (e.g. use 0.5 instead of .5 and -0.5 instead of -.5).
465 This element holds four numerical expressions of an affine
466 transformation. At their simplest these will be four <double>
467 elements but they can also be more involved expressions.
471 This element holds the two <int> elements of a range
476 This element holds at least one <int> element of an Unicode
481 This element holds at least one <string> element of a
482 RFC-3066-style languages or more.
486 Holds a property name. Evaluates to the first value from the
487 property of the pattern. If the 'target' attribute is not
488 present, it will default to 'default', in which case the
489 property is returned from the font pattern during a
490 target="font" match, and to the pattern during a
491 target="pattern" match. The attribute can also take the values
492 'font' or 'pattern' to explicitly choose which pattern to use.
493 It is an error to use a target of 'font' in a match that has
498 Holds the name of a constant; these are always integers and
499 serve as symbolic names for common font values:
500 Constant Property Value
501 -------------------------------------
521 ultracondensed width 50
522 extracondensed width 63
524 semicondensed width 87
526 semiexpanded width 113
528 extraexpanded width 150
529 ultraexpanded width 200
530 proportional spacing 0
541 lcddefault lcdfilter 1
543 lcdlegacy lcdfilter 3
545 hintslight hintstyle 1
546 hintmedium hintstyle 2
549 <or>, <and>, <plus>, <minus>, <times>, <divide>
551 These elements perform the specified operation on a list of
552 expression elements. <or> and <and> are boolean, not bitwise.
554 <eq>, <not_eq>, <less>, <less_eq>, <more>, <more_eq>, <contains>,
557 These elements compare two values, producing a boolean result.
561 Inverts the boolean sense of its one expression element
565 This element takes three expression elements; if the value of
566 the first is true, it produces the value of the second,
567 otherwise it produces the value of the third.
571 Alias elements provide a shorthand notation for the set of
572 common match operations needed to substitute one font family
573 for another. They contain a <family> element followed by
574 optional <prefer>, <accept> and <default> elements. Fonts
575 matching the <family> element are edited to prepend the list of
576 <prefer>ed families before the matching <family>, append the
577 <accept>able families after the matching <family> and append
578 the <default> families to the end of the family list.
582 Holds a single font family name
584 <prefer>, <accept>, <default>
586 These hold a list of <family> elements to be used by the
589 EXAMPLE CONFIGURATION FILE
591 System configuration file
593 This is an example of a system-wide configuration file
594 <?xml version="1.0"?>
595 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
596 <!-- /etc/fonts/fonts.conf file to configure system font access -->
599 Find fonts in these directories
601 <dir>/usr/share/fonts</dir>
602 <dir>/usr/X11R6/lib/X11/fonts</dir>
605 Accept deprecated 'mono' alias, replacing it with 'monospace'
607 <match target="pattern">
608 <test qual="any" name="family"><string>mono</string></test>
609 <edit name="family" mode="assign"><string>monospace</string></ed
614 Names not including any well known alias are given 'sans-serif'
616 <match target="pattern">
617 <test qual="all" name="family" mode="not_eq"><string>sans-serif<
619 <test qual="all" name="family" mode="not_eq"><string>serif</stri
621 <test qual="all" name="family" mode="not_eq"><string>monospace</
623 <edit name="family" mode="append_last"><string>sans-serif</strin
628 Load per-user customization file, but don't complain
631 <include ignore_missing="yes" prefix="xdg">fontconfig/fonts.conf</includ
635 Load local customization files, but don't complain
638 <include ignore_missing="yes">conf.d</include>
639 <include ignore_missing="yes">local.conf</include>
642 Alias well known font names to available TrueType fonts.
643 These substitute TrueType faces for similar Type1
644 faces to improve screen appearance.
647 <family>Times</family>
648 <prefer><family>Times New Roman</family></prefer>
649 <default><family>serif</family></default>
652 <family>Helvetica</family>
653 <prefer><family>Arial</family></prefer>
654 <default><family>sans</family></default>
657 <family>Courier</family>
658 <prefer><family>Courier New</family></prefer>
659 <default><family>monospace</family></default>
663 Provide required aliases for standard names
664 Do these after the users configuration file so that
665 any aliases there are used preferentially
668 <family>serif</family>
669 <prefer><family>Times New Roman</family></prefer>
672 <family>sans</family>
673 <prefer><family>Arial</family></prefer>
676 <family>monospace</family>
677 <prefer><family>Andale Mono</family></prefer>
681 The example of the requirements of OR operator;
682 If the 'family' contains 'Courier New' OR 'Courier'
683 add 'monospace' as the alternative
685 <match target="pattern">
686 <test name="family" mode="eq">
687 <string>Courier New</string>
689 <edit name="family" mode="prepend">
690 <string>monospace</string>
693 <match target="pattern">
694 <test name="family" mode="eq">
695 <string>Courier</string>
697 <edit name="family" mode="prepend">
698 <string>monospace</string>
704 User configuration file
706 This is an example of a per-user configuration file that lives
707 in $XDG_CONFIG_HOME/fontconfig/fonts.conf
708 <?xml version="1.0"?>
709 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
710 <!-- $XDG_CONFIG_HOME/fontconfig/fonts.conf for per-user font configurat
715 Private font directory
717 <dir prefix="xdg">fonts</dir>
720 use rgb sub-pixel ordering to improve glyph appearance on
721 LCD screens. Changes affecting rendering, but not matching
722 should always use target="font".
724 <match target="font">
725 <edit name="rgba" mode="assign"><const>rgb</const></edit>
728 use WenQuanYi Zen Hei font when serif is requested for Chinese
732 If you don't want to use WenQuanYi Zen Hei font for zh-t
734 you can use zh-cn instead of zh.
735 Please note, even if you set zh-cn, it still matches zh.
736 if you don't like it, you can use compare="eq"
737 instead of compare="contains".
739 <test name="lang" compare="contains">
743 <string>serif</string>
745 <edit name="family" mode="prepend">
746 <string>WenQuanYi Zen Hei</string>
750 use VL Gothic font when sans-serif is requested for Japanese
753 <test name="lang" compare="contains">
757 <string>sans-serif</string>
759 <edit name="family" mode="prepend">
760 <string>VL Gothic</string>
767 fonts.conf contains configuration information for the
768 fontconfig library consisting of directories to look at for
769 font information as well as instructions on editing program
770 specified font patterns before attempting to match the
771 available fonts. It is in XML format.
773 conf.d is the conventional name for a directory of additional
774 configuration files managed by external applications or the
775 local administrator. The filenames starting with decimal digits
776 are sorted in lexicographic order and used as additional
777 configuration files. All of these files are in XML format. The
778 master fonts.conf file references this directory in an
781 fonts.dtd is a DTD that describes the format of the
784 $XDG_CONFIG_HOME/fontconfig/conf.d and ~/.fonts.conf.d is the
785 conventional name for a per-user directory of (typically
786 auto-generated) configuration files, although the actual
787 location is specified in the global fonts.conf file. please
788 note that ~/.fonts.conf.d is deprecated now. it will not be
789 read by default in the future version.
791 $XDG_CONFIG_HOME/fontconfig/fonts.conf and ~/.fonts.conf is the
792 conventional location for per-user font configuration, although
793 the actual location is specified in the global fonts.conf file.
794 please note that ~/.fonts.conf is deprecated now. it will not
795 be read by default in the future version.
797 $XDG_CACHE_HOME/fontconfig/*.cache-* and
798 ~/.fontconfig/*.cache-* is the conventional repository of font
799 information that isn't found in the per-directory caches. This
800 file is automatically maintained by fontconfig. please note
801 that ~/.fontconfig/*.cache-* is deprecated now. it will not be
802 read by default in the future version.
804 Environment variables
806 FONTCONFIG_FILE is used to override the default configuration
809 FONTCONFIG_PATH is used to override the default configuration
812 FC_DEBUG is used to output the detailed debugging messages. see
813 Debugging Applications section for more details.
815 FC_DBG_MATCH_FILTER is used to filter out the patterns. this
816 takes a comma-separated list of object names and effects only
817 when FC_DEBUG has MATCH2. see Debugging Applications section
820 FC_LANG is used to specify the default language as the weak
821 binding in the query. if this isn't set, the default language
822 will be determined from current locale.
824 FONTCONFIG_USE_MMAP is used to control the use of mmap(2) for
825 the cache files if available. this take a boolean value.
826 fontconfig will checks if the cache files are stored on the
827 filesystem that is safe to use mmap(2). explicitly setting this
828 environment variable will causes skipping this check and
829 enforce to use or not use mmap(2) anyway.
833 fc-cat(1), fc-cache(1), fc-list(1), fc-match(1), fc-query(1)
837 Fontconfig version 2.13.0