Files
wren/test/language/string/unicode_escapes.wren
Bob Nystrom 58e4d26648 "IO" -> "System".
Get rid of the separate opt-in IO class and replace it with a core
System class.

- Remove wren_io.c, wren_io.h, and io.wren.
- Remove the flags that disable it.
- Remove the overloads for print() with different arity. (It was an
  experiment, but I don't think it's that useful.)
- Remove IO.read(). That will reappear using libuv in the CLI at some
  point.
- Remove IO.time. Doesn't seem to have been used.
- Update all of the tests, docs, etc.

I'm sorry for all the breakage this causes, but I think "System" is a
better name for this class (it makes it natural to add things like
"System.gc()") and frees up "IO" for referring to the CLI's IO module.
2015-09-15 07:46:09 -07:00

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// One byte UTF-8 Sequences.
System.print("\u0041") // expect: A
System.print("\u007e") // expect: ~
// Two byte sequences.
System.print("\u00b6") // expect: ¶
System.print("\u00de") // expect: Þ
// Three byte sequences.
System.print("\u0950") // expect: ॐ
System.print("\u0b83") // expect: ஃ
// Capitalized hex.
System.print("\u00B6") // expect: ¶
System.print("\u00DE") // expect: Þ
// TODO: Syntax for Unicode escapes > 0xffff?