Text encoding issues with default settings

[scabug]

While in a perfect world “Unicode/UTF-8 everywhere” would be a sensible standard, Scala has to work well with existing code.

Because of that, text encoding/input/output is done in Unicode where possible and in the underlying platform's encoding where necessary (due to Java's heritage).

Despite that, there are several places in the standard library where a third way has been chosen: Defaulting to some outdated encodings of the ISO-8859-X family.

This should be fixed.

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-6407?orig=1
Reporter: @soc
Affected Versions: 2.10.0, 2.11.0-M1

[scabug]

@soc said:
scala/scala#1359

[SethTisue]

For the record: it appears to me that the bug part of this already got fixed at some point, and scala/scala#10004 is just code cleanup (with one esoteric exception in writeChromeTrace, where an encoding wasn't specified).

[som-snytt]

The PR links to the fix on xml.

I did not deprecate this arguable default on the grounds that Source is known to be caveat emptorish.

https://github.com/scala/scala/blob/2.13.x/src/library/scala/io/Source.scala#L119

[SethTisue]

https://github.com/scala/scala/blob/2.13.x/src/library/scala/io/Source.scala#L119

😱