[m-rev.] for review: Announce recent changes to string type and string module.
jfischer at opturion.com
Mon Nov 18 15:53:40 AEDT 2019
On Mon, 18 Nov 2019, Peter Wang wrote:
> Announce changes regarding ill-formed code unit sequences in
> Delete a note about ongoing work.
> diff --git a/NEWS b/NEWS
> index f41c9fb8e..b9f1b132a 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -462,6 +462,12 @@ Changes to the Mercury standard library:
> - foldr_substring/5
> - foldr_substring/6
> +* The string type has been defined to permit ill-formed code unit sequences.
I would delete this first sentence; the string type has always been
defined in such a way that ill-formed code unit sequences could occur.
What has actually changed is covered by this next bit.
> + Predicates and functions in the string module now have defined behaviours
> + for strings containing ill-formed sequences. Also, some predicates and
> + functions now have defined behaviour on surrogate code points
> + (e.g. failing or throwing an exception) that was previously undefined.
> * The following predicates have been added to the map module:
That's fine otherwise.
More information about the reviews