Output with long lines and multi-byte characters displayed incorrectly

[eriwen]

This is migrated from GRADLE-3329, which had an attempted fix in Gradle 3.2.1.

Expected Behavior

Output should not be garbled by Gradle regardless of line length or character encoding.

Current Behavior

This build demonstrates unexpected � characters in the output where multi-byte characters are.

Context

Those relying on multi-byte characters for output will be affected. I expect this affects international users more significantly.

Original forum post
Another forum post

Steps to Reproduce (for bugs)

Define and run the following task on a dumb terminal:

task demonstrateBug() {
  def text = " ▓ " + ("✔" * 10) + (" a b c d e f " * 2) + ("✔" * 10) + " ▒ "
  1000.times {println text + text}
}

Your Environment

This might behave differently depending on the OS and console.

[sormuras]

@eriwen It seems to be a Travis console/logging only problem. When I moved the test task into a plain shell script, like:

#!/bin/bash

for run in {1..1000}
do
  echo " ▓ ✔✔✔✔✔✔✔✔✔✔ a b c d e f  a b c d e f ✔✔✔✔✔✔✔✔✔✔ ▒ "
done

it too showed a lot of � characters in the output: https://api.travis-ci.org/jobs/183558479/log.txt?deansi=true
Will file an issue against Travis.

[eriwen]

Nice @sormuras! That was step one on my list for triaging this, but you kindly did that for us. Thank you again. I'll close this issue.