[HarfBuzz] Adding debug support to hb

[Luis de Bethencourt]

Debugging also helps self-document what the code does. And documentation is
one of the top needs mentioned in this list.


On 10 February 2014 21:11, Martin Hosken <mhosken at gmail.com> wrote:

> Dear Behdad,
>
> As we approach a v1.0 I would like to encourage us to add debug support
> for font developers.
>
> Looking at the rather nice hb_auto_trace, it would really help if the
> trace routine could be passed the buffer as well as the lookup being
> traced. That way a font debugger could show the glyph string state before
> and after a lookup runs, the position in the glyph string where the lookup
> is executed and which lookup executed.
>
> Yours,
> Martin
>
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