[DiapDealer]

With regard to the select char->entity substitution not working on Windows platforms:

The following modifications to the "src/Sigil/ResourceObjects/HTMLResource.cpp" file would seem to remedy that. I've only been able to test it (in an admittedly very limited fashion) on the Windows and Linux platforms (my OS X dev machine is misbehaving ATM), but no adverse affects thus far from simply using the UTF-8 hex representation of the characters in place of of the "\uXXXX" unicode codepoint.

--- Sigil-0.5.902-Code/src/Sigil/ResourceObjects/HTMLResource-orig.cpp	Tue Jun 19 19:39:38 2012
+++ Sigil-0.5.902-Code/src/Sigil/ResourceObjects/HTMLResource.cpp	Wed Jun 20 20:05:26 2012
@@ -178,9 +178,9 @@
 {
     QString newsource = source;
 
-    newsource = newsource.replace( QString::fromUtf8( "\u00ad" ), "& shy;" );
-    newsource = newsource.replace( QString::fromUtf8( "\u2014" ), "—" );
-    newsource = newsource.replace( QString::fromUtf8( "\u2013" ), "–" );
+    newsource = newsource.replace( QString::fromUtf8( "\xc2\xad" ), "& shy;" );
+    newsource = newsource.replace( QString::fromUtf8( "\xe2\x80\x94" ), "—" );
+    newsource = newsource.replace( QString::fromUtf8( "\xe2\x80\x93" ), "–" );
 
     return newsource;
 }

Do with that what you will.

I apologize for the "& shy;" the forum won't let me type the actual entity without weird things happening. There's obviously unneccessary spaces in my patch that would have to be removed.