Build 2015 Breaks Parsing of Accented Letters

[Tristano Ajmone]

The new dev build 2015 has broken the parsing of accented letter (for sure, the ì).

Look at the Italian library, where there's a verb dì ("say"), and how the introduction of build 2015 broke the test suite:

• commit ecfe9da (switched to build 2015) is broken:

    ```
    > dì "ciao" a 1
    Non conosco la parola 'd'.
    ```
  

• commit 340bb40 (build 1980) was working:

    ```
    > dì "ciao" a 1
    Dici "ciao", ma non succede nulla.
    ```
  

I'm not sure if this also affects other accented letters (à, è, é, ò, ù), but I'll check.

[Tristano Ajmone]

Ok, I can't be sure which build actually introduced the bug since I jumped from build 1980 directly to 2015, but I've now tested with 2017 and the problem is still there.