Sometimes it is useful to find out which character set a particular character belongs to. One use for this is in determining which coding systems (see Coding Systems) are capable of representing all of the text in question; another is to determine the font(s) for displaying that text.
This function returns the charset of highest priority containing the
character at position pos in the current buffer. If pos
is omitted or nil, it defaults to the current value of point.
If pos is out of range, the value is nil.
This function returns a list of the character sets of highest priority that contain characters in the current buffer between positions beg and end.
The optional argument translation specifies a translation table
to use for scanning the text (see Translation of Characters). If
it is non-nil, then each character in the region is translated
through this table, and the value returned describes the translated
characters instead of the characters actually in the buffer.
This function returns a list of character sets of highest priority
that contain characters in string. It is just like
find-charset-region, except that it applies to the contents of
string instead of part of the current buffer.