x-list-fontsname &optional reference-face frame maximum width
This function returns a list of available font names that match name. name should be a string containing a font name in either the Fontconfig, GTK, or XLFD format (see Fonts in The GNU Emacs Manual). Within an XLFD string, wildcard characters may be used: the ‘*’ character matches any substring, and the ‘?’ character matches any single character. Case is ignored when matching font names.
If the optional arguments reference-face and frame are specified, the returned list includes only fonts that are the same size as reference-face (a face name) currently is on the frame frame.
The optional argument maximum sets a limit on how many fonts to
return. If it is non-
nil, then the return value is truncated
after the first maximum matching fonts. Specifying a small
value for maximum can make this function much faster, in cases
where many fonts match the pattern.
The optional argument width specifies a desired font width. If
it is non-
nil, the function only returns those fonts whose
characters are (on average) width times as wide as
x-family-fonts&optional family frame
This function returns a list describing the available fonts for family
family on frame. If family is omitted or
this list applies to all families, and therefore, it contains all
available fonts. Otherwise, family must be a string; it may
contain the wildcards ‘?’ and ‘*’.
The list describes the display that frame is on; if frame is
nil, it applies to the selected frame’s display
(see Input Focus).
Each element in the list is a vector of the following form:
[family width point-size weight slant fixed-p full registry-and-encoding]
The first five elements correspond to face attributes; if you specify these attributes for a face, it will use this font.
The last three elements give additional information about the font.
fixed-p is non-
nil if the font is fixed-pitch.
full is the full name of the font, and
registry-and-encoding is a string giving the registry and
encoding of the font.