gtk-text-iter-slice (start end)

start -- a gtk-text-iter instance with the start of a range
end -- a gtk-text-iter instance with the end of a range

A string with a slice of text from the text buffer.

Returns a string with the text in the given range. A "slice" is a string of characters encoded in UTF-8 format, including the Unicode "unknown" character 0xFFFC for iterable non-character elements in the text buffer, such as images. Because images are encoded in the slice, byte and character offsets in the returned string will correspond to byte offsets in the text buffer. Note that the character 0xFFFC can occur in normal text as well, so it is not a reliable indicator that a pixbuf or widget is in the text buffer.