Re: [Silgraphite-devel] Different result under Graphite1 vs. Graphite2

[Sharon C. <sha...@si...>]

Your description of how it should work looks correct, and is also the 
result I get when I run this in WorldPad.

On 12/1/2011 12:11 PM, Johan Winge wrote:
> Hi!
>
> I got a bug report today from a user of my Graphite font, pointing out
> that the font behaved differently in LibreOffice 3.4 compared to 
> previous
> versions. To demonstrate this, I have managed to construct a minimal 
> (or
> at least small) testcase:
>
> ---- GDL file begins ----
>
> table(glyph)
>     a=codepoint("a")
>     A=codepoint("A")
>     b=codepoint("b")
>     B=codepoint("B")
> endtable;
>
> table(substitution)
>     pass(1)
>       b b > B B / _ ^ a a _ ; // Rule 1
>       a > A / B A ^ _ ;       // Rule 2
>       a > A / B ^ _ ;         // Rule 3
>     endpass;
> endtable;
>
> ---- EOF ----
>
> A Graphite font compiled with this GDL file is attached.
>
> If I understand the GDL language correctly, these rules (slightly
> contrived as they are) should handle the string "baaba" as follows
> (^ shows scan position):
>
> ^baaba  (Initial string)
> B^aaBa  (By rule 1)
> B^AaBa  (By rule 3)
> BA^aBa  (No match)
> BA^ABa  (By rule 2)
> BAA^Ba  (No match)
> BAAB^a  (No match)
> BAAB^A  (By rule 3)
> BAABA^  (No match)
>
> This ("BAABA") is the result I get in applications using pango-graphite
> under Ubuntu, but in LibreOffice 3.4 the result is "BAABa", with a 
> final
> lower case "a". Is Graphite2 in error here?
>
> Regards,
> Johan Winge
>
>
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