Scanning for Character Sets

Sometimes it is useful to find out which character sets appear in a part of a buffer or a string. One use for this is in determining which coding systems (see section Coding Systems) are capable of representing all of the text in question.

Function: find-charset-region beg end &optional translation

This function returns a list of the character sets that appear in the current buffer between positions beg and end.

The optional argument translation specifies a translation table to be used in scanning the text (see section 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.

Function: find-charset-string string &optional translation

This function returns a list of the character sets that appear in the string string.

The optional argument translation specifies a translation table; see find-charset-region, above.

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