The recent posts by Joel caused quite a bit of noise lately, but are several things in Joel's Wasabi post caught my eye that I haven't seen blogged elsewhere:
Can anyone say leaky abstractions? VBScript & JScript are very similar, I will grant him that, but client side vs. server side programming is very different. And unless all they are doing is basically string concantaion, I really don't think that it is possible to have the same code in both places.
It is certainly possible to use the same langauge in both cases, but not code of any complexity is going to be portable between the two environment.
Again, leaky abstractions. FogBugz was originally an ASP (classic) application, which means connected data model, recordset, etc. I would hazzard a guess that it is still uses much of this model. .Net has a completely different data model than ASP. This is not going to be a new backend only port, not if they intend to do more than put a checkbox saying "Run on CLR".
Um, writing a compiler isn't that much of a challange, yes. The problem is with all the other stuff that a language need. For instance, a debugger. Oh, you are not going to write your own debugger, but rely on the native VBScript / JScript debugers. On the top of my list of "things not to do in christmas" is "debugging generated code"*.
* Actually, I don't do anything in christmas, so it it a mote list.