Maintenance of Predef.

1) Deprecates much of Predef and scala.Console, especially:

 - the read* methods (see below)
 - the set{Out,Err,In} methods (see SI-4793)

2) Removed long-deprecated:

 - Predef#exit
 - Predef#error should have gone, but could not due to sbt

At least the whole source base has now been future-proofed
against the eventual removal of Predef#error.

The low justification for the read* methods should be readily
apparent: they are little used and have no call to be in global
namespace, especially given their weird ad hoc semantics and
unreasonably tempting names such as readBoolean().

3) Segregated the deprecated elements in Predef from the part
which still thrives.

4) Converted all the standard Predef implicits into implicit
classes, value classes where possible:

  - ArrowAssoc, Ensuring, StringFormat, StringAdd, RichException (value)
  - SeqCharSequence, ArrayCharSequence (non-value)

Non-implicit deprecated stubs prop up the names of the
formerly converting methods.

1 files changed, 53 insertions, 0 deletions

diff --git a/src/library/scala/io/AnsiColor.scala b/src/library/scala/io/AnsiColor.scala
new file mode 100644
index 0000000000..6b00eb283f
--- /dev/null
+++ b/src/library/scala/io/AnsiColor.scala
@@ -0,0 +1,53 @@
+package scala
+package io
+
+trait AnsiColor {
+  /** Foreground color for ANSI black */
+  final val BLACK      = "\033[30m"
+  /** Foreground color for ANSI red */
+  final val RED        = "\033[31m"
+  /** Foreground color for ANSI green */
+  final val GREEN      = "\033[32m"
+  /** Foreground color for ANSI yellow */
+  final val YELLOW     = "\033[33m"
+  /** Foreground color for ANSI blue */
+  final val BLUE       = "\033[34m"
+  /** Foreground color for ANSI magenta */
+  final val MAGENTA    = "\033[35m"
+  /** Foreground color for ANSI cyan */
+  final val CYAN       = "\033[36m"
+  /** Foreground color for ANSI white */
+  final val WHITE      = "\033[37m"
+
+  /** Background color for ANSI black */
+  final val BLACK_B    = "\033[40m"
+  /** Background color for ANSI red */
+  final val RED_B      = "\033[41m"
+  /** Background color for ANSI green */
+  final val GREEN_B    = "\033[42m"
+  /** Background color for ANSI yellow */
+  final val YELLOW_B   = "\033[43m"
+  /** Background color for ANSI blue */
+  final val BLUE_B     = "\033[44m"
+  /** Background color for ANSI magenta */
+  final val MAGENTA_B  = "\033[45m"
+  /** Background color for ANSI cyan */
+  final val CYAN_B     = "\033[46m"
+  /** Background color for ANSI white */
+  final val WHITE_B    = "\033[47m"
+
+  /** Reset ANSI styles */
+  final val RESET      = "\033[0m"
+  /** ANSI bold */
+  final val BOLD       = "\033[1m"
+  /** ANSI underlines */
+  final val UNDERLINED = "\033[4m"
+  /** ANSI blink */
+  final val BLINK      = "\033[5m"
+  /** ANSI reversed */
+  final val REVERSED   = "\033[7m"
+  /** ANSI invisible */
+  final val INVISIBLE  = "\033[8m"
+}
+
+object AnsiColor extends AnsiColor { }