/usr/share/xml/fontconfig/fonts.dtd is in fontconfig-config 2.11.0-6.7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 | <!-- This is the Document Type Definition for font configuration files -->
<!ELEMENT fontconfig (dir |
cache |
cachedir |
include |
config |
selectfont |
match |
alias)* >
<!--
Add a directory that provides fonts
-->
<!ELEMENT dir (#PCDATA)>
<!ATTLIST dir
prefix CDATA "default"
xml:space (default|preserve) 'preserve'>
<!--
Define the per-user file that holds cache font information.
If the filename begins with '~', it is replaced with the users
home directory path.
-->
<!ELEMENT cache (#PCDATA)>
<!ATTLIST cache xml:space (default|preserve) 'preserve'>
<!--
Add a directory that is searched for font cache files.
These hold per-directory cache data and are searched in
order for each directory. When writing cache files, the first
directory which allows the cache file to be created is used.
A leading '~' in a directory name is replaced with the users
home directory path.
-->
<!ELEMENT cachedir (#PCDATA)>
<!ATTLIST cachedir
prefix CDATA "default"
xml:space (default|preserve) 'preserve'>
<!--
Reference another configuration file; note that this
is another complete font configuration file and not
just a file included by the XML parser.
Set 'ignore_missing' to 'yes' if errors are to be ignored.
If the filename begins with '~', it is replaced with the users
home directory path.
-->
<!ELEMENT include (#PCDATA)>
<!ATTLIST include
ignore_missing (no|yes) "no"
prefix CDATA "default"
deprecated (yes|no) "no"
xml:space (default|preserve) "preserve">
<!--
Global library configuration data
-->
<!ELEMENT config (blank|rescan)*>
<!--
Specify the set of Unicode encoding values which
represent glyphs that are allowed to contain no
data. With this list, fontconfig can examine
fonts for broken glyphs and eliminate them from
the set of valid Unicode chars. This idea
was borrowed from Mozilla
-->
<!ELEMENT blank (int|range)*>
<!--
Aliases are just a special case for multiple match elements
They are syntactically equivalent to:
<match>
<test name="family">
<string value=[family]/>
</test>
<edit name="family" mode="prepend">
<string value=[prefer]/>
...
</edit>
<edit name="family" mode="append">
<string value=[accept]/>
...
</edit>
<edit name="family" mode="append_last">
<string value=[default]/>
...
</edit>
</match>
-->
<!--
Periodically rescan the font configuration and
directories to synch internal state with filesystem
-->
<!ELEMENT rescan (int)>
<!--
Edit list of available fonts at startup/reload time
-->
<!ELEMENT selectfont (rejectfont | acceptfont)* >
<!ELEMENT rejectfont (glob | pattern)*>
<!ELEMENT acceptfont (glob | pattern)*>
<!ELEMENT glob (#PCDATA)>
<!ELEMENT pattern (patelt)*>
<!ENTITY % constant 'int|double|string|matrix|bool|charset|langset|const'>
<!ELEMENT patelt (%constant;)*>
<!ATTLIST patelt
name CDATA #REQUIRED>
<!ELEMENT alias (test?, family*, prefer?, accept?, default?)>
<!ATTLIST alias
binding (weak|strong|same) "weak">
<!ELEMENT prefer (family)*>
<!ELEMENT accept (family)*>
<!ELEMENT default (family)*>
<!ELEMENT family (#PCDATA)>
<!ATTLIST family xml:space (default|preserve) 'preserve'>
<!ENTITY % expr 'int|double|string|matrix|bool|charset|langset
|name|const
|or|and|eq|not_eq|less|less_eq|more|more_eq|contains|not_contains
|plus|minus|times|divide|not|if|floor|ceil|round|trunc'>
<!--
Match and edit patterns.
If 'target' is 'pattern', execute the match before selecting a font.
if 'target' is 'font', execute the match on the result of a font
selection.
-->
<!ELEMENT match (test*, edit*)+>
<!ATTLIST match
target (pattern|font|scan) "pattern">
<!--
Match a field in a pattern
if 'qual' is 'any', then the match succeeds if any value in the field matches.
if 'qual' is 'all', then the match succeeds only if all values match.
if 'qual' is 'first', then the match succeeds only if the first value matches.
if 'qual' is 'not_first', then the match succeeds only if any value other than
the first matches.
For match elements with target=font, if test 'target' is 'pattern',
then the test is applied to the pattern used in matching rather than
to the resulting font.
Match elements with target=scan are applied as fonts are scanned.
They edit the pattern generated from the scanned font and affect
what the fontconfig database contains.
-->
<!ELEMENT test (%expr;)*>
<!ATTLIST test
qual (any|all|first|not_first) "any"
name CDATA #REQUIRED
target (pattern|font|default) "default"
ignore-blanks (true|false) "false"
compare (eq|not_eq|less|less_eq|more|more_eq|contains|not_contains) "eq">
<!--
Edit a field in a pattern
The enclosed values are used together to edit the list of values
associated with 'name'.
If 'name' matches one of those used in a test element for this match element:
if 'mode' is 'assign', replace the matched value.
if 'mode' is 'assign_replace', replace all of the values
if 'mode' is 'prepend', insert before the matched value
if 'mode' is 'append', insert after the matched value
if 'mode' is 'prepend_first', insert before all of the values
if 'mode' is 'append_last', insert after all of the values
If 'name' doesn't match any of those used in a test element:
if 'mode' is 'assign' or 'assign_replace, replace all of the values
if 'mode' is 'prepend' or 'prepend_first', insert before all of the values
if 'mode' is 'append' or 'append_last', insert after all of the values
-->
<!ELEMENT edit (%expr;)*>
<!ATTLIST edit
name CDATA #REQUIRED
mode (assign|assign_replace|prepend|append|prepend_first|append_last|delete|delete_all) "assign"
binding (weak|strong|same) "weak">
<!--
Elements of expressions follow
-->
<!ELEMENT int (#PCDATA)>
<!ATTLIST int xml:space (default|preserve) 'preserve'>
<!ELEMENT double (#PCDATA)>
<!ATTLIST double xml:space (default|preserve) 'preserve'>
<!ELEMENT string (#PCDATA)>
<!ATTLIST string xml:space (default|preserve) 'preserve'>
<!ELEMENT matrix ((%expr;), (%expr;), (%expr;), (%expr;))>
<!ELEMENT bool (#PCDATA)>
<!ELEMENT charset (int|range)*>
<!ELEMENT range (int,int)>
<!ELEMENT langset (string)*>
<!ELEMENT name (#PCDATA)>
<!ATTLIST name xml:space (default|preserve) 'preserve'
target (default|font|pattern) 'default'>
<!ELEMENT const (#PCDATA)>
<!ATTLIST const xml:space (default|preserve) 'preserve'>
<!ELEMENT or (%expr;)*>
<!ELEMENT and (%expr;)*>
<!ELEMENT eq ((%expr;), (%expr;))>
<!ELEMENT not_eq ((%expr;), (%expr;))>
<!ELEMENT less ((%expr;), (%expr;))>
<!ELEMENT less_eq ((%expr;), (%expr;))>
<!ELEMENT more ((%expr;), (%expr;))>
<!ELEMENT more_eq ((%expr;), (%expr;))>
<!ELEMENT contains ((%expr;), (%expr;))>
<!ELEMENT not_contains ((%expr;), (%expr;))>
<!ELEMENT plus (%expr;)*>
<!ELEMENT minus (%expr;)*>
<!ELEMENT times (%expr;)*>
<!ELEMENT divide (%expr;)*>
<!ELEMENT not (%expr;)>
<!ELEMENT if ((%expr;), (%expr;), (%expr;))>
<!ELEMENT floor (%expr;)>
<!ELEMENT ceil (%expr;)>
<!ELEMENT round (%expr;)>
<!ELEMENT trunc (%expr;)>
|