Esteban wrote:
> There are a couple things that strike me as counterintuitive in
> font.GlyphString.get_break_index.  I'd like to know your rationale for
> these:
>
>  - If no valid break index is found, the original from_index is
> returned. Why? Wouldn't it be better to return None (easier to tell
> from a valid index) or the length of the text (a sane default if the
> whole text fits the width)?
>   
Returning None might make sense, but I'm pretty sure having it return 
the original index simplifies the inner loop of the calling code (at 
least, for the code I've written).
>  - If text[from_index:] actually fits in the given width, I still get
> the index of the beginning of the last word. Why?
get_break_index can't make the assumption that the end of the string is 
a valid break point (otherwise you couldn't use it to for laying out 
text with multiple styles).  font.Text adds a temporary space to the end 
of the string (and discounts it later) because it doesn't handle 
multiple styles.

You might be interested to look at the contrib/layout package, which 
does substantially more scary things with GlyphString than font.Text 
does (and is what it was originally written for).

Better APIs are good, if you can come up with something.  If you watch 
the commit/issues logs you'll see that word-wrapping errors in font.Text 
are not uncommon, it's quite tricky to get the correct behaviour with 
the current API.

Cheers
Alex.

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