PangoLogAttr: @is_line_break: if set, can break line in front of character @is_mandatory_break: if set, must break line in front of character @is_char_break: if set, can break here when doing character wrapping @is_white: is whitespace character @is_cursor_position: if set, cursor can appear in front of character. i.e. this is a grapheme boundary, or the first character in the text. This flag implements Unicode's <ulink url="http://www.unicode.org/reports/tr29/">Grapheme Cluster Boundaries</ulink> semantics. @is_word_start: is first character in a word @is_word_end: is first non-word char after a word Note that in degenerate cases, you could have both @is_word_start and @is_word_end set for some character. @is_sentence_boundary: is a sentence boundary. There are two ways to divide sentences. The first assigns all inter-sentence whitespace/control/format chars to some sentence, so all chars are in some sentence; @is_sentence_boundary denotes the boundaries there. The second way doesn't assign between-sentence spaces, etc. to any sentence, so @is_sentence_start/@is_sentence_end mark the boundaries of those sentences. @is_sentence_start: is first character in a sentence @is_sentence_end: is first char after a sentence. Note that in degenerate cases, you could have both @is_sentence_start and @is_sentence_end set for some character. (e.g. no space after a period, so the next sentence starts right away) @backspace_deletes_character: if set, backspace deletes one character rather than the entire grapheme cluster. This field is only meaningful on grapheme boundaries (where @is_cursor_position is set). In some languages, the full grapheme (e.g. letter + diacritics) is considered a unit, while in others, each decomposed character in the grapheme is a unit. In the default implementation of pango_break(), this bit is set on all grapheme boundaries except those following Latin, Cyrillic or Greek base characters. @is_expandable_space: is a whitespace character that can possibly be expanded for justification purposes. (Since: 1.18) @is_word_boundary: is a word boundary. More specifically, means that this is not a position in the middle of a word. For example, both sides of a punctuation mark are considered word boundaries. This flag is particularly useful when selecting text word-by-word. This flag implements Unicode's <ulink url="http://www.unicode.org/reports/tr29/">Word Boundaries</ulink> semantics. (Since: 1.22)