[XeTeX] Bug or design flaw in Polyglossia 2012/04/29 v1.2.1

[Peter Dyballa]

Hello!

With original XeTeX 0.9998 and recent (development) version 0.9999.2  
in TeX Live 2012 I get this PDF output from a Malayalam text:

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The empty boxes represent:

	Missing character: There is no . in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no . in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no 2 in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no 0 in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no 1 in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no 3 in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no 3 in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!
	Missing character: There is no 0 in font Rachana/ 
OT:script=mlym;language=DFLT;mapping=tex-text;!

When the missing characters are obviously Latin, why aren't they taken  
from a Latin script, from \englishfont for example?


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--
Greetings

   Pete

Windows, c'est un peu comme le beaujolais nouveau: ? chaque nouvelle  
cuv?e on sait que ce sera d?gueulasse, mais on en prend quand m?me,  
par masochisme.