> On Wed, 19 May 2021 04:58:08 +0000 (UTC), Werner LEMBERG wrote: > >> HarfBuzz is a text shaping library; it is not meant to actually do >> text layout. > > Do you mean it is lacking things like recognizing word breaks and line > breaks? Because it can lay out a line of text pretty well. >
And in my application (cinema subtitles) a UTF-8 string is passed in with an output of horizontal or vertical text. There are XML attributes to the Text element that indicate the direction (left to right, top down, right to left, or bidirectional (using the Unicode Bidirectional Algorithm). Each Text element includes one line (or column) of text, so line breaks are handled during authoring (creation of the XML subtitle file). Harold
