don't back up a char from the end iterator, fixes #61859 ("can't put

don't back up a char from the end iterator, fixes #61859 ("can't put

2001-10-22  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktextbuffer.c (gtk_text_buffer_place_cursor): don't back
	up a char from the end iterator, fixes #61859 ("can't put cursor
	at the end of the buffer")

	* gtk/gtktextiter.c (gtk_text_iter_forward_to_line_end): fix this
	to work with delimiters other than newline.

	* tests/testtextbuffer.c: add some tests for get_chars_in_line,
	get_bytes_in_line

	* gtk/gtktextiter.c (gtk_text_iter_get_chars_in_line): fix for the
	last line, since the newline is no longer counted.
	(gtk_text_iter_get_bytes_in_line): ditto